DOE

Home’s ductwork is vital for comfort, health, and safety. When it comes to keeping the home warm in the winter and cool in the summer, the ductwork will be doing the heavy lifting. Ductwork is the piping and connective tissue that connects from the furnace to every room in the house. The setup of the ductwork might seem simple enough, but it’s actually a bit more complicated than it might seem. Large percentage of homeowners A large percentage of homeowners have leaks in their ductwork right now and don’t even realize it For example, each room will require different-sized ducts connecting it to the furnace, depending on the size of the room. This can lead to a lot of little corners, curves, bends, and places where the ductwork could become leaky. A large percentage of homeowners have leaks in their ductwork right now and don’t even realize it. Even the most minor leaks can cause issues that they would want to resolve immediately. What are the Signs of Leaky Air Ducts? Here are some of the most common signs of leaky air ducts in the home: They may notice cold or hot air coming from registers in different rooms. They may hear whistling or other noises coming from their ducts. The energy bills may be higher than expected. They may have dust or dirt buildup in the home. They may have more respiratory problems, such as allergies or asthma. Indoor air quality can be negatively impacted by leaky air ducts. Benefits of Sealing Leaky Air Ducts Leaky air ducts not only compromise the efficiency of the HVAC system but can also adversely impact the quality of air inside the home. Duct sealing helps the quality and efficiency of moving conditioned air throughout the home. Sealing these ducts is essential for optimal home comfort, health, and energy consumption while lowering the utility bills. 1. Improve Indoor Air Quality Leaks in ducts can allow unfiltered air, dust, pollen, and other allergens into the home. This can lead to respiratory problems and aggravate allergies and asthma symptoms. Sealing leaky air ducts can help to improve the home’s indoor air quality by preventing these contaminants from entering the home. 2. Sealing Leaks Improves Energy Efficiency, Heating, and Cooling In addition, sealing leaky air ducts can help to improve the home’s energy efficiency. When air leaks out of the ducts, the HVAC system has to work harder to heat or cool the home. 3. Ultimately, Reduce the Energy Bills and Utilities Improving energy efficiency will help to reduce energy consumption and save money on bills. If they are concerned about the quality of the air in the home, sealing leaky air ducts is a good place to start. This simple and effective home improvement can help improve health and save money. At the end of the day, a properly sealed duct system is going to improve the home’s air quality, energy efficiency in circulating the heated or conditioned air, and utility costs. Duct Sealing Methods There are a few different duct sealing methods they can use if they have leaky ducts. In order to bring them up to speed on how they can fix the leaky ductwork in how best suits them, let’s go through a few of the most popular options on the market: 1. Duct Sealing Tape or Duct Tape HVAC duct sealing tape comes on a roll and can be found in every hardware store One of the ways they can seal leaky ductwork is with HVAC duct sealing tape. Also known as aluminum foil tape, HVAC duct sealing tape comes on a roll and can be found in every hardware store. This method for sealing leaky ducts can be less time-consuming and messy, but doesn’t tend to stack up with other duct sealing methods in terms of performance and longevity. If they have ducts that get dirty or oily commonly, duct sealing tape is likely to fail. However, if they insist on using this option for whatever reason, the best bet is to go with either foil tape, butyl tape, or any other kind of duct sealing tape which is marked with the UL logo. This logo stands for “Underwriters Laboratories.” It signifies the tape is suitable for residential use on ductwork. Never try to seal the ducts with regular duct tape. It’s not fire- or smoke-rated and will not hold up for very long. 2. Duct Mastic Sealant While tape can be a quicker and easier fix, it tends to be more expensive and less durable in the long run. A better option is to use mastic air duct sealant. This is a gooey substance that hardens after applying to the ducts. Water-based mastic duct sealant is the best option because it cleans up easier and will hold up for a long time. Water-based mastic duct bond is the best option because it cleans up easier and will hold up for a long time When using mastic duct sealant on their own, they can apply it with a simple paintbrush. They may also use a caulk gun to apply the duct mastic, though it’s unnecessary. Remember not to get duct mastic sealant confused with regular “duct seal.” Duct seal is for sealing the outside of the home around electrical wires and other tiny gaps. It is not made for use on the leaky ductwork. Depending on the size of the leak, they may need to combine the liquid mastic with another product, such as fiberglass mesh tape. This applies to gaps bigger than ¼ of an inch. 3. Aeroseal While it’s true that mastic for ductwork is the best DIY choice for durability and cost-effectiveness, sealing ducts with mastic themselves can be tricky. Especially in those hard-to-reach areas, it can be nearly impossible to use mastic sealing for ducts on the own when there are hidden leaks behind drywall. That’s where Aeroseal comes in. Aeroseal uses a patented technology to pressurize the duct system while identifying and sealing every single leak in it. The duct sealing technology has actually been called “one of the best scientific and technological accomplishments since this department was first established” by the U.S. Department of Energy. Aeroseal can completely remove the mess and struggle from mastic sealing ducts on its own. Here’s an overview of how Aeroseal technicians can quickly analyzing and work on sealing air ducts from the inside: First, the technician will block all of the registers and vents in order to pressurize the system. Once pressurized, they’ll use a computer to analyze the data. This helps them identify all the leaks, cracks, and holes in the ductwork. Next, the technician will measure the current leakage. This will later give them a before-and-after comparison of the air duct leakage. Once this is done, they will begin distributing their mastic sealant for ducts throughout the air vents and ducts. The technology used is so precise that they only use the exact amount of sealant needed, making cleanup a breeze. Immediate improvement in air quality Aeroseal’s customers will notice an immediate improvement in their air quality Once finished, the Aeroseal technician will re-measure the ductwork to see what the leakage percentage is. That way, they can compare the amount of air flowing through the system, before and after they seal the system. Rooms that weren’t getting enough air before should be balanced and well-circulated. Aeroseal’s customers will notice an immediate improvement in their air quality. They’ll notice an improvement in the smell and purity of the air is better too. Since the leaks in the ductwork have been fixed, dust and dirty air can’t get into the pipes and spread throughout the house. Now, all it will take to maintain perfect indoor air quality is a good air filter, which they won’t have to change as often because there won’t be as much dirt and dust getting through. Can Seal Leaky Air Ducts Themselves? Yes, they can seal leaky air ducts themselves using duct sealing tape or mastic duct sealant. However, it is important to do a thorough job to ensure that all the leaks are sealed. If they are not comfortable sealing the ducts themselves, hire a professional. Struggling with Leaky Air Ducts? Let Aeroseal Seal the Air Ducts and Leaky Ductwork for the Best Results A few different ways to seal the leaks in the ducts While it’s true there are a few different ways they can try to seal the leaks in the ducts, letting the pros handle it is the best decision they can make. There are bound to be small cracks and leaks in places they can’t reach on their own. So, the pressurized system like the one Aeroseal uses is the only surefire way to get the best results. Want to improve the indoor air quality, save money on heating and cooling, and make sure every room is getting the exact amount of warm or cool air that it needs?

In the pursuit of sustainable and energy-efficient housing, Beazer Homes has set a remarkable precedent by committing to achieve the US Department of Energy’s Zero Energy Ready Home™ (ZERH) certification on every home they build by the end of 2025. This ambitious goal required careful planning and innovative solutions, leading Beazer to partner with Aeroseal Envelope and use Aerobarrier as a critical component of their strategy. Building Towards Sustainability Building several thousand homes annually across 16 metropolitan areas to meet ZERH certification Building several thousand homes annually across 16 metropolitan areas to meet ZERH certification standards is no small feat. It demands meticulous attention to detail and a commitment to finding solutions that are both effective and scalable. Beazer Homes recognized the importance of addressing air leakage, a significant contributor to a home’s energy use, accounting for 25-40% of heating and cooling energy consumption. ZERH requirements Jim Moore, Senior Vice President of Operations at Beazer Homes, emphasized the importance of achieving airtightness to meet ZERH requirements. “We set the goal of reducing our homes’ energy use by about half to achieve ZERH,” Moore stated. AeroBarrier emerged as a crucial solution to this challenge, offering the capability to consistently achieve the required level of airtightness – at least 1.5 air changes per hour at 50 Pascals (ACH50). The AeroBarrier Advantage AeroBarrier ensures consistent airtightness levels, verified through continuous blower AeroBarrier’s innovative technology has revolutionized the process of sealing building envelopes, providing Beazer Homes with a reliable and efficient solution.  By filling holes, cracks, and crevices with precision, AeroBarrier ensures consistent airtightness levels, verified through continuous blower door tests. This capability enables Beazer to achieve ZERH certification on every single-family home they build. Delivering Cost Savings and Environmental Benefits Apart from meeting ZERH requirements, AeroBarrier has delivered tangible cost savings for Beazer Homes. By eliminating the need for flash foaming the attic-side of drywall ceilings, Beazer can save approximately $1500 per house, demonstrating the economic viability of sustainable building practices. Beazer can save approximately $1500 per house, demonstrating the economic viability Moreover, the benefits of air sealing extend beyond energy efficiency. A tighter building envelope reduces the risk of condensation, enhances the durability of the home, improves indoor air quality, and creates a quieter living environment for homeowners. These environmental and health advantages underscore the holistic value of AeroBarrier in modern home construction. A Model for Sustainable Building Beazer Homes’ partnership with Aeroseal Envelope exemplifies how production builders can achieve Zero Energy Ready Homes profitably and efficiently. By prioritizing quality, sustainability, and innovation, Beazer Homes sets a precedent for the industry, delivering better homes to homeowners across the country. In conclusion, AeroBarrier plays a pivotal role in Beazer Homes’ journey towards sustainability, empowering them to build homes that not only meet stringent energy efficiency standards but also enhance comfort, durability, and environmental stewardship. As the demand for sustainable housing continues to rise, partnerships like these pave the way for a greener and more sustainable future.

They’ve probably noticed that they’re not getting the airflow out of the vents that they should be. Maybe they have rooms that are hotter than others. Therefore, the logical conclusion is that not enough air is being pushed through the ducts and into rooms further away from the unit. So, the next logical leap would be that they need a bigger, and more expensive, air conditioner so all that air gets pushed through, right? Well, most likely not. Sure, someone will sell one to them, and they may even notice a difference, but that’s kind of like pouring gas on top of the car to get it in the tank. Let’s first look into solving the air leakage issue before swapping out for something that could be overkill. Understanding the Real Issue: Duct Leakage According to the Department of Energy, every home that has a duct system has duct leakage A significant factor in uneven room temperatures is duct leakage. According to the Department of Energy, every home that has a duct system has duct leakage. On average, that leakage varies from 10% to 30%. So it’s possible that only 70% of the conditioned air is reaching the end of the ductwork, while the other 30% is escaping into unconditioned spaces such as inside the walls, into an attic, or in the crawlspace. Considering this, even if they paid up for a stronger air conditioner, they’re now paying for even more air to be lost. Therefore, the air conditioner may already be the perfect size for the home, but they’re losing air through duct leakage. Sealing the ductwork may be all they need to solve the problem. The “Right Sizing” Philosophy The concept of “right sizing” the air conditioning system is crucial in addressing inefficiencies. Rather than focusing on the size of the equipment, it’s crucial to consider the unique needs of the home. Factors such as the home’s insulation, the number and quality of windows, and the state of the ductwork play a significant role in determining the appropriate size of the air conditioning unit. Learn more here about getting the maximum efficiency out of the equipment. Concept of Air Changes per Hour (ACH) In the case of windows, quality glazing can significantly reduce unwanted heat gain or loss In the case of windows, quality glazing can significantly reduce unwanted heat gain or loss. Similarly, superior insulation acts as a barrier to heat flow, maintaining desired indoor temperatures with less energy expenditure. It’s also important to consider the concept of Air Changes per Hour (ACH). ACH is a measure of how many times the air within a space is replaced in an hour, and it plays a pivotal role in understanding a home’s energy efficiency and comfort levels. Poorly sealed and drafty homes can have high ACH values, leading to significant energy losses and uneven temperatures. The Misconception of Bigger Units The misconception that a bigger air conditioner will solve all cooling issues leads to a cycle of inefficiency and increased energy costs. Oversized units not only consume more energy but can also lead to other problems, such as increased humidity levels in the home and reduced life of the air conditioner overall. The key lies in optimizing the performance of the current system through measures like duct sealing and insulation improvements. By oversizing the equipment, they’re getting less efficiency out of that equipment, even if it’s rated very well. Proper sizing and airflow management Installing an oversized air conditioner can inadvertently create issues in the home, such as undue condensation Installing an oversized air conditioner can inadvertently create problems in the home, such as excessive condensation and mold growth. When an AC unit is too large, it cools the space quickly but doesn’t run long enough to effectively remove humidity from the air. This excess moisture can condense on cooler surfaces, fostering mold growth that can damage the home and affect air quality. Moreover, an oversized AC can lead to a phenomenon known as ‘choking,’ where the system’s return air flow is insufficient for its capacity. This restriction makes the air conditioner work harder than necessary, increasing wear and reducing its lifespan. Proper sizing and airflow management are critical to avoid these issues and ensure efficient, healthy cooling. Positive pressure forces It’s also important to understand the role of return duct leakage. Return ducts bring conditioned air back to the furnace or air conditioner. Not only does this type of leakage pull in hot/humid or cold/dry air from unconditioned spaces, but it also introduces various contaminants into the living environment. A bigger air conditioner would only exacerbate these problems. Moreover, the imbalanced airflow caused by return duct leaks can lead to a buildup of positive pressure inside the home. This positive pressure forces conditioned air out through any openings in the building’s envelope, a process known as exfiltration, effectively wasting the cool air that the air conditioner works hard to produce. With more air being forced through the system, the positive pressure increases, leading to greater losses of conditioned air and higher infiltration of contaminants. The Easiest and Most Effective Way to Seal the Ducts Aeroseal’s non-toxic, water-based sealant efficiently seals air leaks in both ducts They may be wondering how to even go about sealing the ducts. Using tape and a sticky sealant called mastic is one of the couple of ways to stop the leaks that they can see. But what if they don’t know where the leaks are? That’s where Aeroseal comes in. Aeroseal is the only advanced duct sealing method that can reduce leakage by 90%-99% in one simple process.  Even the leaks they can’t see, which are often behind drywall. Aeroseal’s non-toxic, water-based sealant efficiently seals air leaks in both ducts and the building envelope itself, ensuring that the air goes where they need it and not where they don’t. Imagine feeling comfortable, consistent temperatures in ALL rooms of the house. Aeroseal is by far the most effective, and efficient method to seal ductwork. Optimize Before They Maximize Obtaining consistent room temperatures doesn’t necessarily mean buying a stronger air conditioner. By understanding the underlying issues and embracing the “right sizing” approach, they can achieve efficient cooling without falling into the trap of “bigger is better.” So, before they purchase a pricey upgrade, consider whether sealing their ducts and optimizing their current system might be the smarter, more efficient choice.

As former energy efficiency director at the Massachusetts Department of Energy Resources (DOER) and current policy lead at Aeroseal, they might say they passionate about decarbonization. The decision to join the Aeroseal team in 2023 was driven by how effectively Aeroseal Duct and Aeroseal Envelope solutions lower the carbon footprints of commercial and residential buildings. Net Zero goals Aeroseal finds itself at the intersection of many global efforts and trends related to combatting climate change Aeroseal finds itself at the intersection of many global efforts and trends related to combatting climate change. Whether it’s improving building energy efficiency and indoor health, reducing dependence on fossil fuels, lowering greenhouse gas (GHG) emissions, supporting equitable electrification initiatives or contributing to Net Zero goals, Aeroseal technologies have the potential to act as a force multiplier in all these critically important efforts.   Rulemaking and building codes (i.e., policy) play an important role in the pursuit of these goals, both in setting minimum efficiency standards and providing opportunities to incentivize building decarbonization. Overview of the overarching trends This was my primary focus during the time with the Massachusetts DOER and is now directly applicable to addressing Aeroseal customer priorities. But they’ve also told us how challenging it can be to stay current on policy changes and capitalize on incentive opportunities.  This was the motivation for starting a dedicated Policy Corner blog series, which will be focused on providing clear and concise policy information and incentive guidance to the customers. They are excited to kick off this Policy Corner blog by providing an overview of the overarching trends, topics, and opportunities that they’re focusing on at Aeroseal.   IRA drives electrification in residential HVAC  Transition to heat pump technology has been identified as a key pillar of building decarbonization efforts The transition to heat pump technology has been identified as a key pillar of building decarbonization efforts. Research has shown that the pairing of electrification (i.e., heat pumps) with weatherization measures, such as Aeroseal Duct sealing, is essential for maximizing heat pump performance and cost-effectiveness. Leaky ductwork and building envelopes can compound airflow and setpoint challenges with heat pumps, requiring back-up electric heat to meet desired comfort levels.   DOE guidance at the end of 2023 The Inflation Reduction Act (IRA) is making significant funds available for home energy rebate programs to support these electrification and weatherization upgrades, focused especially on low- and moderate-income residents. Following final Department of Energy (DOE) guidance at the end of 2023, states are now able to submit applications to the DOE. Expect these rebates to start being made available to homeowners and multi-family building owners later this year and into 2025. Aeroseal’s policy team Aeroseal’s policy team is dedicated to helping stakeholders access these aids and unlock rebates Outside of the IRA’s home energy rebates, it’s important to also remember that a tax credit of up to $1,200 is already available through 25C; and many states have significant funding already available to help homeowners implement energy efficiency upgrades. Aeroseal’s policy team is dedicated to helping stakeholders access these resources and unlock rebates as they become available. They recently released a new webpage that provides details on rebates available for Aeroseal duct sealing.  Focus on multi-family and affordable housing  Improving ventilation systems in multi-family dwellings has far-reaching impacts on energy efficiency and decarbonization — and ultimately, occupant comfort and well-being. The benefits of Aeroseal solutions are never more apparent than when they can seal existing ductwork in aging buildings to:  Reduce energy use Lower electricity costs and prepare buildings for electrification  Improve indoor air quality (IAQ) and building performance  Currently, Aeroseal is upgrading aging ventilation systems in cities such as New York City, Boston, and Chicago. They goal is to find new and streamlined ways to implement these solutions into affordable housing programs and income-eligible weatherization opportunities.  Helping commercial building owners meet local ordinances  Aeroseal has developed numerous strategic partnerships with energy service companies Aeroseal has developed numerous strategic partnerships with energy service companies and building owners that are deploying the duct sealing technology to reliably reduce energy and GHG emissions. New local ordinances — such as Local Law 97 in New York and the Building Energy Reporting Disclosure Ordinance (BERDO) in Boston — are requiring large building owners to invest in upgrades to reduce energy intensity and GHG emissions.   Aeroseal has significant expertise in reducing energy consumption (and costs) in these energy-intensive facilities. Not only does this service help them to make significant steps along their decarbonization journeys, but it also provides a turnkey, cost-effective solution for avoiding penalties associated with these regulatory requirements.  Actively supporting the passive house movement  Adoption of passive house design is growing rapidly, especially in the multi-family and affordable housing sectors. Meeting the ventilation and compartmentalization standards are among the most challenging components of passive house certification. Passive houses provide comfy, safe and affordable living settings for residents Aeroseal technologies have consistently helped design teams and developers to meet these standards, delivering the verifiable metrics needed to unlock significant incentives while providing stakeholders a path to achieving their 2050 decarbonization goals. To top it off, passive houses provide comfortable, safe and affordable living environments for residents.  ENERGY STAR® 3.2 raises the standard for builders Other policy shifts that they’re keeping an eye on this year are the changes coming to ENERGY STAR and the 45L tax credit. As of January 2025, accessing the 45L tax credit will require certification to the ENERGY STAR 3.2 standard. Aeroseal will be working to help builders chart the most cost-effective course for meeting these new requirements and achieve $2,500 to $5,000 in tax credits per home. Proper duct and envelope sealing will be more important than ever.   Coming up next, Maggie’s Policy Corner will take a deeper dive into electrification and how to leverage Aeroseal Duct technologies to balance the heat pump equation. 

In the world of HVAC, maintenance is no longer just about fixing what’s broken — it's about predicting what will break before it does. As buildings become smarter and more reliant on digital systems, maintenance strategies are evolving too. They’re seeing a major shift from traditional reactive maintenance toward predictive and condition-based maintenance models that leverage data and analytics to increase reliability and reduce costs. Let’s explore how these strategies differ, why the shift matters, and what it really takes to implement predictive/proactive maintenance in buildings. Understanding the Maintenance Spectrum HVAC maintenance strategies can be visualized along a spectrum, ranging from purely reactive HVAC maintenance strategies can be visualized along a spectrum, ranging from purely reactive to highly prescriptive. Reactive maintenance is the most traditional form — systems are left to run until failure occurs, at which point emergency service is required. Preventive maintenance takes a slightly more proactive approach by servicing equipment at regular intervals, such as every six months, regardless of actual wear or performance. Condition-based maintenance (CBM) introduces real-time monitoring into the equation. By using sensors to assess equipment condition, maintenance is only performed when data indicates it’s necessary. Evolution in maintenance thinking Predictive maintenance builds on this by using historical data and analytics to forecast potential failures, allowing action before a problem even manifests. The most advanced strategy, prescriptive maintenance, not only predicts issues but also recommends specific actions based on the likely outcomes. These approaches reflect an evolution in maintenance thinking — one that shifts from reacting to problems to preventing them in the most efficient, data-informed possible way. The Hidden Cost of Reactive Maintenance Beyond downtime, reactive maintenance results in much higher emergency repair costs While reactive maintenance may appear simple and cost-effective on the surface, it often leads to deeper, more expensive problems over time. Unplanned downtime is one of the most immediate risks. HVAC systems are prone to failure under peak load conditions — for example, during heatwaves or cold snaps — which can lead to uncomfortable indoor environments, tenant complaints, and, in commercial real estate, the risk of losing tenants altogether. In mission-critical facilities like hospitals or data centers, downtime can jeopardize safety or disrupt operations entirely. Beyond downtime, reactive maintenance results in much higher emergency repair costs. These include premium charges for after-hours labor, expedited parts shipping, and inefficient use of internal staff. Often, the urgency leads to temporary fixes rather than sustainable, long-term solutions. OSHA violations or noncompliance with ASHRAE standards Failures rarely occur in isolation. One component breaking down can strain or damage others. A failed fan motor, for instance, might overheat adjacent sensors or wiring. Similarly, issues like clogged condensate lines or refrigerant leaks can cause water damage or mold growth. These secondary effects multiply the cost and complexity of repairs. Running systems to the point of failure also reduces their operational lifespan Running systems to the point of failure also reduces their operational lifespan. Motors, bearings, compressors, and other components degrade faster when operating under stress. Issues like vibration, heat, and restricted airflow — often symptoms of neglect — shorten equipment life significantly. ASHRAE data suggests that systems under reactive maintenance may last five to ten years less than those maintained proactively. Lastly, there are serious safety and compliance risks. Poor air quality, undetected leaks, or temperature control failures can result in OSHA violations or noncompliance with ASHRAE standards, particularly ASHRAE 62.1, which regulates indoor air quality and ventilation. In regulated industries, this can lead to legal penalties or reputational harm. Challenges of Going Predictive/Proactive Shifting to a predictive/proactive maintenance strategy offers clear benefits, but it comes with its own set of challenges. One of the largest barriers is the upfront investment required. Sensors, data acquisition systems, and analytics platforms must be installed and integrated with existing HVAC infrastructure, which can be costly. Data management also poses a significant challenge. Predictive/proactive maintenance generates a constant stream of information that must be collected, stored, and analyzed in real-time. Without proper IT infrastructure and trained personnel, this data is underutilized or misinterpreted. Technicians and maintenance teams Building operators must select and manage third-party tools and services Many buildings still operate on legacy systems that may not be compatible with modern sensors or platforms, requiring either upgrades or creative integration.  At the same time, technicians and maintenance teams must be trained to understand and act on the insights these systems provide — a major cultural and educational shift for some organizations. Finally, successful implementation often depends on vendor coordination. Building operators must select and manage third-party tools and services that work within their broader ecosystem. Benefits of Shifting to Predictive-Based Maintenance Despite these obstacles, the advantages of moving toward predictive and CBM strategies are compelling. One of the most immediate benefits is the significant reduction in unplanned downtime. Predictive/proactive maintenance ensures systems are only serviced when needed By identifying issues before they lead to failure, operators can schedule maintenance during off-peak hours, minimizing disruptions to building occupants. Analytics and maintenance providers report that predictive strategies can reduce unplanned downtime by up to 50%. There are also considerable financial benefits. Predictive/proactive maintenance ensures systems are only serviced when needed, avoiding unnecessary inspections and part replacements. Emergency repair costs are dramatically reduced, and budgets become more predictable. Siemens estimates that organizations can lower overall maintenance costs by 25% to 40% through predictive practices. Life of HVAC equipment These strategies also extend equipment lifespan. By preventing problems like short-cycling, overheating, and unbalanced airflow, systems experience less stress and wear. ASHRAE reports that predictive maintenance can extend the life of HVAC equipment by five to ten years, which delays capital expenditures and reduces long-term costs. Energy efficiency is another key advantage. Well-maintained systems run more efficiently, consuming less energy. Predictive analytics can fine-tune operations in real time, adjusting temperature setpoints or airflow based on occupancy trends or environmental data. The U.S. Department of Energy estimates potential energy savings of 10% to 20% in facilities using predictive maintenance. Integrated with a building management system Proactive approach turns maintenance from a reactive chore into a strategic function Planning and resource allocation also improve dramatically. With better visibility into asset health, facility managers can allocate technician labor more effectively and manage parts inventory based on actual need. This proactive approach turns maintenance from a reactive chore into a strategic function. Perhaps most important is access to data-driven insights. Facility managers can benchmark performance across multiple assets or sites, identify patterns, and make smarter decisions about upgrades, retrofits, and replacements. When integrated with a building management system or digital twin, predictive systems can provide real-time optimization and forecasting tools that transform how buildings are managed. A Smarter Future for HVAC The evolution toward predictive and condition-based maintenance reflects a broader transformation in building management — one rooted in data, foresight, and continuous improvement. By adopting these strategies, building owners and operators can improve reliability, reduce costs, extend asset life, and improve occupant comfort and safety. While the path to predictive maintenance requires investment and change, the long-term benefits make it one of the smartest moves a building owner/operator can make. The future isn’t reactive — it’s predictive, and it’s already here.

Aeroseal’s year began with an extraordinary recognition: being named Cleantech Company of the Year as part of the prestigious 2024 Global Cleantech 100. Out of 25,435 nominations spanning over 65 countries, Aeroseal stood out as the top-scoring company in North America—a remarkable achievement that earned us this distinguished award. This recognition isn’t just about Aeroseal’s proven technology; it reflects the real, measurable impact they are making on the world’s energy use. CEO’s Words This honor underscores Aeroseal’s legacy in energy-efficient building solutions As Amit Gupta, CEO of Aeroseal, put it: “Aeroseal is incredibly proud to not only have been selected as part of the 2024 Global Cleantech 100, but even more so to have been named ‘Company of the Year’ among that group.” “These awards are a further testament to the work Aeroseal is doing to make a significant impact on the world’s energy use.” This honor underscores Aeroseal’s legacy in energy-efficient building solutions, reinforcing its commitment to helping address one of the most pressing global challenges: reducing carbon emissions and energy waste in buildings. Bloomberg BNEF Pioneer Award Aeroseal added to its growing list of accolades with the Bloomberg New Energy Finance (BNEF) Pioneer Award. This award honors companies leading the way in energy and climate solutions, and Aeroseal’s inclusion highlights its technology’s ability to deliver measurable, scalable results for building performance. From homes to commercial buildings, Aeroseal’s air-sealing technology helps reduce energy waste and emissions—tangible solutions for a cleaner, more sustainable future. Launch of AeroBarrier Select This solution enables builders to meet increasingly stringent energy codes, like Zero Energy Ready Home and Energy Star In 2024, Aeroseal introduced AeroBarrier Select, a product designed to simplify envelope sealing for residential builders. This solution enables builders to meet increasingly stringent energy codes, like Zero Energy Ready Home and Energy Star—with cost efficiency and minimal disruption. AeroBarrier Select delivers verified, consistent results, helping builders create healthier, more energy-efficient homes while staying on time and on budget. This launch marks an exciting advancement for Aeroseal and the construction industry. Zero Energy Ready Homes Aeroseal partnered with Beazer Homes, the first national builder to commit to ensuring every home they build meets the U.S. Department of Energy’s Zero Energy Ready Home (ZERH) certification. To help achieve this ambitious goal, Beazer integrated Aeroseal’s AeroBarrier technology, delivering the precise, verifiable air-tightness required to meet ZERH standards while keeping projects on schedule and on budget. Global Growth and Acquisitions This growth was fueled by increasing adoption of their technology and the addition of new talent Aeroseal achieved significant growth in 2024, expanding its presence in the United States, the United Kingdom, and Saudi Arabia to meet rising global demand for energy-efficient building solutions. This growth was fueled by increasing adoption of their technology and the addition of new talent, bringing Aeroseal’s team to nearly 400 employees worldwide. The growth of the workforce enables them to scale operations, strengthen customer partnerships, and drive continued innovation. With a global presence and a growing team, Aeroseal is well-positioned to deliver even greater impact as we head into 2025. Breakthrough Energy Summit At the Breakthrough Energy Summit, Aeroseal’s participation reinforced their role as a pioneer in energy efficiency and sustainable building solutions. This event brought together global innovators focused on accelerating the transition to clean energy, and Aeroseal’s inclusion highlighted its impact in tackling one of the biggest challenges: energy waste in the built environment. Aeroseal is thrilled to be featured in the two-part episode of 'Don’t Hate Your House with the Property Brothers on HGTV'. In this special project, Jonathan and Drew work their magic to create a dream home for their parents. Looking Ahead to 2025 As 2024 comes to an end, Aeroseal remains focused on strategic growth and expansion. With a foundation built on proven technology, global partnerships, and market leadership, 2025 is set to be a banner year for Aeroseal. They are committed to scaling the solutions to reduce energy waste, improve building performance, and empower builders, property owners, and homeowners to create healthier, more sustainable spaces.

Meeting a project’s overarching design goals is vital in the building and construction sector. Creating a sustainable building could be one of these goals — driven by company commitments, federal policies, and state-based initiatives. However, the priorities of minimizing capital and long-term operating costs and maintaining project timelines often prevail.  Frequently, the perception in the industry is that these priorities — especially cost — are incompatible with designs and technologies that help decarbonize buildings. Cutting emissions and optimizing costs Organizations can take an incremental approach without compromising on cost However, our experience with heating, ventilation and air-conditioning (HVAC) systems has shown that cutting emissions and optimizing costs are not mutually exclusive when we leverage the right technologies and design strategies. Decarbonization isn't a one-time event. Reducing emissions is a continuous process with many paths. Organizations can take an incremental approach without compromising on cost. Finding the right balance requires weighing project priorities, the building’s environment, short- and long-range facility plans and available technology solutions. To achieve this balance, energy modeling is an essential tool. Weighing up design goals When it comes to sustainability and decarbonization in HVAC systems, there are three primary levers: electrification of heating using heat pumps, improving energy efficiency and using lower global warming potential (GWP) refrigerants. Cost priorities can often be aligned more easily with sustainability goals than expected Each project's physical environment and framework conditions will influence the mix of these three levers. Cost priorities can often be aligned more easily with sustainability goals than expected. For example, the local climate substantially impacts electrification.  In hotter climates, electrification is far easier than in cold ones, where heat pumps require much more electricity when heating. In extreme cold temperatures, heat pumps will eventually require a back-up like natural gas (NG) to provide supplemental heat. A hybrid system using NG as a back-up to the heat pump also avoids oversizing the heat pump to cope with the most extreme conditions – which only occur infrequently. Hybrid heating systems come into their own Hybrid systems can significantly reduce emissions compared to traditional fossil-fuel-only heating systems and save costs, especially in areas with access to cheap renewable electricity from solar PV plants, wind farms and hydro or geothermal sources. By switching over to NG when temperatures get too low or when insufficient renewable electricity is available, building owners can not only save costs but also hedge against grid outages in the coldest months of the year. It’s critical to pick the right point for your hybrid system to switch from one fuel source to another. By changing to the lowest rate — electricity or gas prices — at any particular time, you can save money while making significant CO2 savings. Alternatively, the time to switch could be based not only on energy costs but also on emissions reductions, allowing the designer to optimize around different design goals. Sustainability doesn’t necessarily command a premium A study from the National Renewable Energy Laboratory demonstrates that decarbonization and broader sustainability goals can be achieved alongside other design goals. When comparing conventional school buildings with zero-energy schools — buildings that produce as much renewable energy as they need to operate — the NREL found that the latter offers several benefits. Zero-energy schools require less energy and offset demand using on-site renewable energy. Zero-energy schools require less energy and offset demand using on-site renewable energy The study indicates that zero-energy school buildings can be designed and built within conventional budgets — and they can cost less. By applying an integrated approach to design and construction, the extra cost of the zero-energy systems can be offset by the greater efficiencies they facilitate. The study lists downsizing heating, ventilation and air conditioning among the benefits that help reduce capital and operational expenditures. However, as we have seen, balancing each building's inherent complexities is the key to achieving these benefits. This is where energy modeling comes into play. Balancing sustainability and design goals Energy models tie together all factors affecting HVAC design and installation. They are a tool for comparing many design alternatives quickly and cost-effectively to find the most appropriate solution to the project’s design goals.  Energy modeling can simulate various system configurations to show the effect of using different types of equipment, such as an electric heat pump compared to a conventional HVAC system. Modeling can also factor in decarbonization policy incentives that may affect the economics and viability of a proposed system. Various system-design options In addition, life-cycle analyses of different keys can provide a clearer long-term financial picture In addition, life-cycle analyses of different solutions can provide a clearer long-term financial picture. Models can forecast long-term costs, performance and return on investment of various system-design options, which can make it easier to get sign-off projects from investors. With its data-driven approach, energy modeling can also prevent overengineering that could lead to unnecessary expenses. A US Department of Energy study has shown that projects using energy modeling perform better and can have shorter returns on investment than those that don’t. The future of HVAC: A harmonized approach As sustainability codes, standards and regulations evolve throughout the US, energy modeling becomes increasingly vital for harmonizing environmental priorities with core design objectives — enabling balanced, effective solutions that drive greener, more resilient outcomes for buildings, businesses and the planet. By integrated advanced modeling practices into the design process, the HVAC industry can support the transition to a low-carbon future without sacrificing economic feasibility or operational efficiency. HVAC industry can support the transition to a low-carbon future without sacrificing economic feasibility. Example analysis A 54,000 ft² office building prototype, compliant with ASHRAE 90.1 standards, was modeled in Denver, Colorado, using Daikin Applied EA Pro software, powered by the US DOE’s EnergyPlus simulation engine. Rebel® heat pump rooftop units were assigned to serve the building. Two HVAC alternatives were analyzed for the heat pumps: (1) electric back-up and (2) gas back-up. The Environmental Protection Agency’s eGRID emission factors, representing the greater Denver regional grid, were used to calculate emissions, along with average electricity and gas utility rates for the region. Electric back-up scenario The results indicate that while total energy usage is lower with the electric back-up scenario—due to the higher efficiency of electric resistance heating compared to gas combustion—the annual utility costs and equivalent carbon emissions are lower with the gas back-up scenario. This is primarily because of higher electric utility rates and the electric emissions profile of the regional electric grid. The annual utility costs and equivalent carbon emissions. This example represents a specific scenario for demonstration purposes but highlights the importance of holistic, project-specific considerations when evaluating design alternatives to meet customer goals.

It’s often said the only constant in life is change. In the HVACR industry, that phrase has been especially true. We saw another year of transitions in 2024 that included evolving efficiency and refrigerant regulations, changing corporate net zero targets, the continued emergence of advanced heat pumps, and the impact of artificial intelligence (AI) in building management.  Smart and sustainable Throughout these transformations, the industry continues to overcome challenges and innovate as we transform the places where people live, work, and play into smarter, healthier, and more sustainable spaces.    As we look toward 2025, we can expect to see a continued, industrywide focus on decarbonization, heat pump development, A2L refrigerants, and AI as regulations expand and new technologies emerge.    Decarbonization  Decarbonization continues to be a very high priority for both the residential and commercial sectors Decarbonization continues to be a very high priority for both the residential and commercial sectors. This focus has transformed the way we design and install HVAC equipment and has created tremendous opportunities for those who invest in educating themselves on the evolving technologies, regulations, and incentives. Today’s building professionals and homeowners have an unprecedented number of incentives available at the federal, state, and utility levels encouraging decarbonization transitions.  Digital and net zero services For example, tax credits such as 25C for consumers and 179D for commercial building owners were expanded under the Inflation Reduction Act (IRA) and can significantly reduce the upfront costs of high-efficiency equipment, creating a compelling offer to replace less efficient systems. In commercial buildings, combining high-efficiency HVAC equipment like electric heat pumps with digital technologies and net zero services can help empower organizations to optimize their buildings and subsystems for both the short- and long-term. Heat pumps  Heat pump technology has advanced significantly in recent years, providing an electrified, high-efficiency HVAC option for nearly all applications – even those operating within colder climates. The Department of Energy’s (DOE) Residential Cold Climate Heat Pump (CCHP) Technology Challenge has propelled the successful introduction of heat pump prototypes that can withstand subfreezing weather. Similarly, the DOE’s Commercial Building Rooftop Heat Pump Accelerator program has helped drive packaged heat pump performance toward greater efficiency for commercial and light commercial buildings located in colder climate zones.  Water-to-water heat pumps Water-to-water heat pumps can replace legacy chiller and boiler combinations without the need for major changes Innovations in commercial water-to-water compound centrifugal heat pumps are also accelerating decarbonization within building retrofits. For facilities that require simultaneous heating and cooling, such as hospitals and universities, water-to-water heat pumps can replace legacy chiller and boiler combinations without the need for major changes to the existing HVAC infrastructure. This partial decarbonization approach can help building operators achieve their decarbonization goals while also lowering operational expenses (OpEx). In many instances, this reduction in OpEx also provides a path to funding additional decarbonization strategies.      A2L refrigerants   The EPA continues to make strides in reducing the consumption and production of hydrofluorocarbons (HFCs) under the American Innovation and Manufacturing (AIM) Act. As part of the AIM Act, the Technology Transitions Program will usher in sector-based regulations beginning January 1, 2025, prohibiting the manufacturing of equipment using refrigerants with a GWP higher than 700.  New protocols As a result, new equipment will continue to hit the market throughout 2025. In tandem, many contractors and technicians will begin working with A2L refrigerants for the first time. Because these refrigerants are classified by ASHRAE as mildly flammable, new protocols for safe refrigerant servicing, storage, and transportation, and refrigerant leak detection (RDS) requirements will be necessary for some applications.   ACCA A2L refrigerant training Contractors should complete ACCA A2L refrigerant training and EPA section 608 certification With these changes, it is important to become familiar with updated codes, including UL 60335-2-40, 3rd and 4th editions, ASHRAE 15 and 15.,2, and the AHRI Safe Refrigerant Transition Task Force (SRTTF), as well as local and state regulations. Contractors should also complete ACCA A2L refrigerant training and EPA section 608 certification. Additionally, new digital tools such as RDS calculators can help contractors navigate A2L leak detection requirements and mitigation strategies while in the field.    AI and controls   AI is positioned to continue to make a huge impact in HVAC. We’re seeing more service techs using generative AI and co-pilots for troubleshooting rather than paging through manuals. At the same time, AI technology can predict if connected HVAC units may have issues, making it possible for service techs to address potential issues in their earliest stages or prevent them from happening altogether. Both of these use cases can help technicians service equipment more quickly, efficiently, and accurately, which can increase equipment longevity and reliability while reducing downtime and total cost of ownership.   Building performance AI-powered building controls can provide a holistic view into contextualized, full-building performance More HVAC systems are being equipped with AI-enhanced controls and reporting. The capabilities these tools provide can give building owners greater opportunities to optimize building performance, improve occupant comfort and well-being, and more easily reach sustainability targets. From a building management perspective, AI-powered building controls can provide a holistic view into contextualized, full-building performance, occupant experience, and sustainability. Openness and flexibility As AI becomes more commonplace, AI-centric building standards, such as ASHRAE Guideline 36, will also continue to emerge that balance sustainability with occupant comfort, health, and safety.    As we move into 2025, we can expect to see another year of equipment innovations, technology advancements, and evolving regulations. As an industry, we continue to face change with openness and flexibility. And it’s this mindset that empowers us to meet, and exceed, expectations – now and in the year to come.

According to some recent estimates, the cooling industry accounts for approximately 10% of global carbon dioxide (CO2) emissions. To place this in perspective, the transportation sector, as the highest contributor, accounts for approximately 20% of global CO2 emissions. While some may see this as a “glass half empty” scenario, the better approach is the one taken by key players in the HVACR space. As we see it, because the cooling industry has been a source of significant emissions contributing to global warming, we have a huge opportunity to turn the tide through innovative chemistry and technology. Certainly, having a sizable impact on improving the health of the planet won’t be as fast as “flipping a switch.” Nor should it be. What is required is a thoughtful, well-planned and well-supported strategy that allows everyone involved in the HVACR industry—from refrigerant and equipment manufacturers to retailers, service shops, and end users—to transition to better solutions in ways that best work for them as well as for our planet in crisis. Industry’s Contributions to CO2 Emission CFC use has been reduced to less than 1% of where it was in the 1980s This transition is already well underway. Long before recent estimates about the industry’s contributions to CO2 emission were shared, providers in HVACR got to work innovating solutions to take refrigeration off “the environmental hot seat,” much like we did decades before when scientists pointed to chlorofluorocarbons (CFCs) as a major cause for ozone layer depletion. If you recall, the 1987 Montreal Protocol unified many countries in the effort and drove industries to find and use CFC alternatives, such as the solutions found in zero ozone depletion potential (ODP) hydrofluorocarbon (HFC) refrigerants. CFC use has been reduced to less than 1% of where it was in the 1980s, and it’s expected that, except for the polar regions, the ozone layer will be completely recovered by 2040.  Industry’s contribution to global warming To minimize the cooling industry’s contribution to global warming, we started by looking at two areas that stood to make a major impact—improving the overall energy efficiency of equipment and lowering the overall climate impact associated with HVACR. While not the sole solution for making these improvements, we knew refrigerants could play a significant role. Companies like Chemours went to the labs and harnessed the power of chemistry to innovate a new class of refrigerants consisting of hydrofluoroolefins (HFOs) and HFO blends.  In addition, OEMs engineered new systems and retrofit solutions that worked with these HFOs In addition, OEMs engineered new systems and retrofit solutions that worked with these HFOs, which have zero ODP, offer a global warming potential (GWP) significantly lower than the legacy products they replace, and enable equipment to run with better energy efficiency. At present, in terms of refrigerants, the industry is headed toward an HFO-centric—and more specifically, a low-toxicity, low-flammability A2L-centric—future. A2Ls and megatrends Industry and the world operate under the influence of several megatrends that continue to put focus on emerging next-generation refrigeration. These include: Fast-tracking the move toward decarbonization Circularity—maximizing the use of renewable energy and minimizing waste through reclamation and the infinite reusability of materials Shortage in skilled workforces—making it imperative for businesses to have technicians who can work with HFCs, Class A1 and A2L HFOs, and even CFCs and HCFCs Increased demand for products that not only support a greener environment but that are manufactured responsibly Business of HVACR Solutions need to offer versatility to support everyone from small family-owned shops These megatrends will continue to influence refrigerant transitions. So will the business of HVACR. In addition to supporting the environment, refrigerants and equipment need to cool effectively and efficiently. They also need to minimize energy consumption, offer low or no toxicity, maximize safety for the people working with them, and have price points that make them accessible to most businesses. Lastly, the supply chain needs to be able to support demand, and solutions need to offer versatility to support everyone from small family-owned shops to global corporations.  Ensuring these needs mesh cohesively with the megatrends requires striking the best possible balance of all the factors. This is where continual refinement of refrigerant chemistry becomes critical. At Chemours, this process started with the first products in our Opteon™ line of HFO-based stationary refrigerants. Chemours Opteon™ XP products, such as Opteon™ XP40 (R-449A) and Opteon™ XP10 (R-513A), are nonflammable refrigerants offering excellent retrofit solutions for replacing higher-GWP legacy HFCs, such as R-404A, while maintaining an A1 safety listing. ISO Safety Classification of A2L From here, chemists continued to develop ways to further lower GWP and maximize performance, operating efficiency, and energy savings. At Chemours, this resulted in the Opteon™ XL line. Poised to be next-generation refrigerants, these have an ASHRAE and ISO Safety classification of A2L and deliver very low GWP. Due to their low flammability, A2Ls are used in new equipment only. A2Ls can also lower operating costs throughout the life cycle of the equipment In addition to supporting regulatory compliance, A2L performance attributes include increased system efficiency, lower energy consumption, low toxicity, and improved safety for use in a broad range of applications. A2Ls can also lower operating costs throughout the life cycle of the equipment. We're seeing the path to that A2L-centric future take shape. For example, Opteon™ XL41 (R-454B) has already been selected by most pioneering global OEMs, including Carrier, Johnson Controls, and Rheem, which have announced alignment with Chemours for the utilization of this product.  Preparing for the transition Because regulations vary around the world, we find some regions are highly advanced in the transition to HFOs and A2Ls, while others are just getting started or fall somewhere in the middle. Consequently, there is no single plan to prepare for the refrigerant transition. However, the following considerations can help guide what steps you take, and when you take them. Your corporate responsibility mission. The systems you use, sell, or support should be charged with a refrigerant that is in line with your commitment to the health and sustainability of the planet. Your employees. Consider the people working for you. Will pride in working for a green company impact productivity, job satisfaction, and retainment?  Customers and clients. Comfort, safety, being “green and clean”—all come into play in attracting and retaining customers and clients. The age of current systems you service/support. Older HVACR systems have greater potential for refrigerant leaks. In the case of ammonia, a leak can pose fatal health risks, and in the case of HCFCs and HFCs, can result in subpar performance. Older systems also tend to require costly repairs and operate less efficiently. Market awareness. Keep an eye on supply trends and make sure refrigerant supply can meet the needs of the systems you support. Your bottom line. Newer-generation refrigerants and the systems that work with them have been developed to lower energy consumption. Determine when the time is right to make a larger upfront investment in new equipment, which can pay dividends in the form of lower energy bills and overall operating costs. Technician training. A2Ls look, feel, and work like R-410A or R-404A, but there are key differences due to their low flammability. Ensure technicians are properly trained to work with A2Ls as well as their predecessors. In conclusion—collaboration In a world that continues to demand and expect more, the criticality of HFO refrigerants—and, more specifically, next-generation A2L solutions—is undeniable, because of their environmental and performance advantages over existing alternatives. When you think of the role cooling plays in every part of our everyday lives, it’s easy to see how and why what we do as an industry now stands to have a major influence on the future of our planet. From being essential to every step along the cold chain—from farm to fork—to ensuring both comfortable and healthy living environments to providing the cooling that makes the data centers that make modern-day necessities and conveniences possible, refrigerants are a permanent fixture in lives, and will remain so as the world in which we live, work, and play continues to evolve. By collaborating, we can all advance a transition that leads to a healthier, more sustainable planet and opens opportunities for every application in the industry to provide customers and clients with higher-performing, safer, and more sustainable solutions.

Does anyone still think that heat pump technologies for residential applications are ineffective in cold climates? If so, they are missing opportunities available through advancements in heat pump technology. New developments in heat pumps are significantly transforming the residential HVAC market. These advanced heat pumps can maintain 100% heating capacity at 0 degrees F and operate efficiently at low temperatures. Secondary heat sources These capabilities reduce the need for secondary heat sources, leading to lower energy consumption and a reduced carbon footprint. By leveraging variable-speed technology and intelligent controls, newer systems optimize energy use, providing homeowners with both comfort and sustainability. Modern heat pumps, such as Carrier's Infinity® Variable-Speed Ultimate Cold Climate Heat Pump with Greenspeed® Intelligence, are designed to operate efficiently at temperatures as low as minus 23 degrees F, according to Carrier. Energy savings and total comfort  Additionally, for those homeowners who are hesitant to make a full swap, dual fuel technology “These systems provide reliable heating even in the harshest conditions, often eliminating the need for secondary heat sources,” says Nick Arch, Carrier’s Vice President and General Manager, Residential Solutions. Additionally, for those homeowners who are hesitant to make a full swap, dual fuel technology, in which a heat pump is paired with a gas furnace, offers an optimal solution. “The system defaults to the gas furnace depending on the outside temperatures, allowing homeowners to experience energy savings and total comfort in harsh climates,” says Arch. “By leveraging advanced technologies, heat pumps now offer a sustainable and efficient solution for year-round comfort in any climate.” Cold Climate Heat Pump Challenge Driving innovation in heat pump technology has been the participation by Carrier and other manufacturers in the U.S. Department of Energy’s (DOE) Cold Climate Heat Pump Challenge. The challenge required heat pumps to operate efficiently at temperatures as low as minus 15 degrees F, pushing manufacturers to innovate in areas such as variable-speed compressors and advanced controls. Carrier's Infinity® Variable-Speed Ultimate Cold Climate Heat Pump with Greenspeed® Intelligence was developed as part of this initiative and has demonstrated exceptional performance in harsh climates. Benefits of newer technologies  Carrier has established state-of-the-art training centers, such as one in Indianapolis “Carrier's successful completion of the challenge underscores our commitment to delivering high-efficiency, reliable heating solutions for cold climates,” says Arch. Carrier is also committed to educating both the dealer/installer community and consumers on the benefits of newer technologies through various initiatives. Carrier has established state-of-the-art training centers, such as one in Indianapolis, to provide hands-on training and certification programs. operation of new heat pump systems Additionally, Carrier offers online courses and resources through its My Learning Center, covering topics such as new refrigerants, system installation, and maintenance. For consumers, Carrier provides detailed information on its website and through marketing campaigns, highlighting the energy efficiency, environmental benefits, and advanced features of its latest heat pump technologies. Intelligence plays a crucial role in the operation of new heat pump systems. For example, Carrier's Greenspeed Intelligence integrates advanced sensors and controls to optimize the performance of heat pumps. It allows the system to adjust its output based on real-time conditions, ensuring maximum efficiency and comfort. Cold Climate Heat Pump with Greenspeed® Intelligence Carrier is expanding the capabilities of dealer/installers via its Connected Portal For instance, the Infinity® Variable-Speed Ultimate Cold Climate Heat Pump with Greenspeed® Intelligence can modulate its capacity between 30% and 100%, providing precise temperature control and reducing energy consumption. This intelligent operation enhances the overall reliability and efficiency of the system. When it comes to heat pump technology, Carrier is expanding the capabilities of dealer/installers through its Connected Portal, advanced diagnostic tools, and the integration of InteliSense Technology. Remote monitoring capability The Connected Portal allows dealers to monitor HVAC systems remotely, providing real-time data on system performance and health. This remote monitoring capability enables dealers to detect issues early, schedule maintenance proactively, and ensure optimal operation. “InteliSense Technology uses cutting-edge sensors to communicate with the system via the thermostat, storing data in the privacy-protected Carrier cloud, and delivering it remotely to Carrier experts,” says Arch. “This allows for accurate troubleshooting and maintenance, reducing downtime and improving service efficiency.” These advancements help improve customer satisfaction and reduce downtime, he says. Advanced defrost technology The precise control provided by this technology enhances the reliability and efficiency of the heat pump Carrier heat pump systems also feature advanced defrost technology that monitors the outdoor coil for the presence of frost. The system uses sensors to detect frost buildup and adjusts the compressor speed to initiate defrosting. Once the frost is melted and drained, the defrost mode concludes automatically. This functionality ensures timely and efficient defrosting, thus minimizing energy waste and maintaining optimal system performance. The precise control provided by this technology enhances the reliability and efficiency of the heat pump. Step in reducing the GWP of heat pumps The transition to R-454B refrigerant, known commercially as Puron Advance™, has been a significant step in reducing the global warming potential (GWP) of heat pumps. Carrier has worked diligently to ease the transition for the dealer/installer community by providing comprehensive training and resources since 2023, says Arch. “The new refrigerant is a near drop-in replacement for R-410A, with similar operating pressures and temperatures, making the transition smoother for technicians,” he adds. Carrier has also conducted extensive field trials and developed detailed guidelines to ensure that dealers and installers are well-prepared for the changeover, minimizing disruption and ensuring a seamless transition.

The U.S. Department of Energy (DoE) Commercial Heat Pump Accelerator program is designed to enhance building efficiency and electrification. Running from 2024 through 2027, the program aims to overcome adoption barriers, promote advanced heat pump technologies, and create sustainable solutions for HVAC professionals. Compared with conventional packaged rooftop units (RTUs) with natural gas heating, heat pump RTUs are estimated to reduce greenhouse gas emissions and energy costs by up to 50%. For those in the HVAC industry, this program is an opportunity to boost operational efficiency, align with emerging sustainability standards, and unlock new business. Transforming Commercial HVAC with Heat Pumps Known for their dual heating and cooling abilities, heat pumps save energy compared to conventional HVAC systems The DoE’s program centers on accelerating the adoption of high-efficiency heat pumps for space conditioning and water heating. By working collaboratively with stakeholders—including manufacturers, utilities, and facility managers—the initiative seeks to integrate energy-efficient solutions into commercial buildings nationwide. Known for their dual heating and cooling capabilities, heat pumps save energy compared to conventional HVAC systems. The Accelerator program prioritizes cutting-edge systems to lower energy consumption and operating costs for businesses. As decarbonization becomes a global priority, electrification of HVAC systems is also key. By reducing reliance on fossil fuels, heat pumps contribute to a cleaner energy future. Practical Benefits for Professionals For HVAC professionals, the program provides a framework to explore new markets and enhance service offerings. With the Accelerator program’s emphasis on efficiency, HVAC professionals can help clients reduce energy bills, providing a tangible ROI for heat pump installations. Participants in the program also gain access to technical guidance, best practices, and case studies, fostering skills to implement heat pumps effectively. As building owners seek energy-efficient solutions, HVAC professionals are positioned as experts in heat pump technology in order to gain a competitive edge. Success of the residential challenge The retail program is a growth of an earlier program related to residential technologies The commercial program is an expansion of an earlier program related to residential technologies. Last fall, the U.S. Department of Energy (DOE) announced that eight manufacturers in the Residential Cold Climate Heat Pump Challenge completed rigorous product field testing to demonstrate energy efficiency and improved performance in cold weather. Bosch, Carrier, Daikin, Johnson Controls, Lennox, Midea, Rheem, and Trane Technologies participated in the residential challenge. Cold climate heat pumps (CCHPs) developed as part of the challenge will soon enter commercial production, manufacturers say.  Building upon the success of the residential challenge, DOE is now working with nine heat pump manufacturers to advance rooftop units (RTUs) for commercial buildings through a new technology challenge. Commercial Building Heat Pump Challenge Expanding with the Commercial Building Heat Pump Challenge through its Better Buildings program, DoE is now working with heat pump manufacturers AAON, Addison, Carrier, Daikin, Johnson Controls, Lennox, LG, Rheem, and Trane Technologies to improve the energy efficiency and performance of RTUs in cold weather. The manufacturers will partner with DoE and national laboratories to create prototypes and test product performance and durability. They will then lead field validations with Better Buildings partners, including Amazon, General Motors, Ikea, the Los Angeles Unified School District, Target, Whole Foods, and others. Tackling Challenges in Heat Pump Adoption The DoE program recognizes common challenges HVAC professionals face in promoting commercial heat pump adoption and provides strategic solutions. Cost Barriers: The upfront cost of heat pumps can deter clients. The program encourages collaboration with utilities to offer incentives and financing options, making the transition more affordable. Performance in Cold Climates: Heat pumps have historically underperformed in colder regions. By focusing on technological advancements, the Accelerator addresses performance issues, ensuring systems work efficiently even in extreme weather. Workforce Training: To ensure seamless implementation, the DoE supports workforce development through training programs, thus empowering HVAC professionals to deliver high-quality installations. A Collective Push for Change The Accelerator agenda thrives on alliances, leveraging the expertise of diverse stakeholders The Accelerator program thrives on partnerships, leveraging the expertise of diverse stakeholders. For manufacturers and innovators, the program promotes advanced heat pump technologies that meet the diverse needs of commercial buildings. For utilities and energy providers, there are incentives to encourage adoption and offset initial costs. Building owners and facility managers can benefit from sharing insights and case studies to demonstrate the practical benefits of heat pumps in real-world scenarios. In general, HVAC professionals can benefit by staying connected to these networks, keeping abreast of new technologies and customer-centric solutions. Heat Pumps and a Greener Future Heat pumps align with global efforts to reduce carbon emissions and meet regulatory requirements. For HVAC professionals, this means not only improving the environmental impact of their services but also helping clients achieve compliance with evolving energy codes and standards. The DoE’s Commercial Heat Pump Accelerator program offers HVAC professionals a clear path to embrace innovation, improve energy efficiency, and secure a leadership position in a rapidly changing marketplace. By participating in the program, HVAC experts can drive the industry forward while enhancing their businesses and delivering meaningful value to clients. As the HVAC landscape evolves, those who seize this opportunity will not only adapt but thrive, setting new benchmarks for efficiency and sustainability in the years to come.

AHR Expo 2024 was abuzz with activity, befitting a dynamic industry in the throes of change.  Industry developments such as electrification and the refrigerant transition render business opportunities on the AHR Expo show floor, where exhibitors display a determination to meet the challenges and thrive in the process. Walking from booth to booth during the three-day show in Chicago, I saw the best the HVAC industry has to offer, up close and personal. Innovation and adaptability are the watchwords as the industry journeys into 2024 and beyond. Refrigerant Transition Top of Mind  Patented R-454B refrigerant enables a simpler transition without redesigning equipment The technology transition is well underway for OEMs seeking to meet a pending AIM Act deadline at the end of the year. OEMs are choosing to embrace either R-32 or R454-B refrigerant to replace legacy R-410A, which is being phased out. Patented R-454B refrigerant enables a simpler transition without redesigning equipment, while R-32 offers advantages such as higher capacity, higher efficiency, and easier cradle-to-cradle management. Arkema Arkema is the only producer of R-32 refrigerant in the United States. The newer refrigerant is being embraced as HVAC OEMs seek to meet the deadline of Jan. 1, 2025, to use lower-GWP (global warming potential) refrigerants in their products. The technology transition is just part of the AIM Act implementation that will also limit allocation and require refrigerant management. Chemours Chemours is a manufacturer of R-454A, R-454B, and R-454C refrigerants. At AHR, they presented hourly education sessions on a variety of subjects. The refrigerant transition will impact everyone in the industry, including refrigerant producers, equipment manufacturers, contractors, and end users. R-454B refrigerant provides identical performance in HVAC systems compared to the previous refrigerant (R-410A). There is less need to redesign equipment; just adding sensors for leak mitigation can address the mild flammability of A2L refrigerants. Because of the 2025 deadline, 2024 will be the “year of new products” in the HVAC market. OEMs pioneering Innovation  Carrier and others are offering smaller footprints, seeking to meet environmental targets Innovation in the HVAC market is led by companies such as Carrier, which has introduced 100 new products each year for the past eight years. Carrier and others are offering smaller footprints, seeking to meet environmental targets, and providing flexibility for customers. New products include the AquaSnap 30RC air-cooled chiller and the AquaEdge 19MV chiller with low GWP refrigerant to meet pending regulatory requirements.  Copeland Copeland, recently divested from Emerson, also emphasizes innovation, including 12 research and development (R&D) facilities, 1,700 engineers, and more than 3,000 patents. At a press conference at AHR Expo, the 100-year-old company announced it is a “new” company owned by Blackstone Private Equity.  Products featured Among the featured products at AHR are Copeland’s oil-free centrifugal compressor with Aero-lift bearing technology; and Copeland’s CC200 case controller, specifically designed to handle the unique challenges of the current retail grocery refrigeration environments. Copeland also pledges to play a role in educating the market about new trends and the transition to new refrigerants.  Emphasizing a Smaller Footprint  Trailblazer AGZ-F is an R-32 air-cooled scroll chiller that delivers 10% greater capacity and efficiency Daikin Daikin highlights the Atmosphera, a single-zone ductless split system (using R-32) that can reduce carbon emissions by 80% (compared to R-410A). Also, Trailblazer AGZ-F is an R-32 air-cooled scroll chiller that delivers 10% greater capacity and efficiency. Products emphasize a smaller footprint and less weight than their predecessors. Rebel Applied is a packaged rooftop unit that continually adjusts operation to address the building load, consuming less energy. Trailblazer HP is an air-to-water heat pump chiller with a reversing function that allows the product to switch between cooling and heating based on temperature requirements.  Friedrich Air Conditioning Friedrich Air Conditioning features the Breeze universally flexible inverter heat pump, a ducted mini-split for upgrading traditional equipment. It works with any furnace or air handler, has side discharge, is 40% smaller, and is cold weather capable to minus 13. Friedrich's new Vert-I-Pak is a line of M1-compliant single package Vertical Heat Pumps (available in 9K, 12K, 18K, and 24K Btu), supporting decarbonization efforts with heat pump operation down to 10°F. High Efficiency for Commercial and Residential Johnson Controls Johnson Controls exhibits their highly efficient residential and commercial HVAC solutions designed for Department of Energy (DOE) 2023 compliance and helping customers achieve Net Zero goals through decarbonization. On display was the York High-Efficiency 18 SEER2 Side-Discharge Heat Pump with up to 30% smaller footprint than vertical-discharge equipment. Johnson Controls-Hitachi Air Conditioning's Aircore 700 single split system is aimed at light commercial and residential. Midea Their 3-ton model achieved 118% of rated capacity heating output at minus 15 degrees Fahrenheit Midea, known for selling consumer products, has kept a low profile in the professional sector, selling products that are either OEMed for Carrier or private-labeled by a contractor company. Seeking to promote the Midea brand, the Chinese company is staking its claim on the trade market with an emphasis on performance: The company exceeded performance in the Department of Energy’s “ColdClimate Heat Pump Challenge:” Their 3-ton model achieved 118% of rated capacity heating output at minus 15 degrees Fahrenheit. Heat pump awareness Results of a survey conducted by Midea show that more than half of homeowners are not fully aware of heat pumps and their function. Awareness lags among contractors, too: 70% of contractors indicate they do not know that the current’s advanced heat pumps can generate 100% heat output to a minimum temperature of minus 4 F. Wide Selection of New Products Mitsubishi Electric Trane HVAC US Mitsubishi Electric Trane HVAC US emphasizes all-electric heat pump solutions. The Deluxe Wall-mounted H2i sumo System connects with an outdoor unit, and the intelli-HEAT dual fuel system can determine the best source of heat – electric or gas – on cold days. Among commercial products, Heat2OHeat Pump Water Heaters are designed to produce high-volume domestic hot water for commercial facilities in any climate. LG Electronics LG Electronics’ booth includes a wide product range, including advanced heating, ventilating, air conditioning LG Electronics’ booth includes a wide product range, including advanced heating, ventilating, air conditioning, and building management solutions for residential and commercial applications. Home electrification products include the LG R32 Air-to-Water Heat Pump Monobloc system; the LG Inverter Heat Pump Water Heater the LG Electronics Home 8 Energy Storage System, and ThinQ, LG’s mobile app. LG Art Cool Gallery multi-zone wall-mount indoor unit The LG Art Cool Gallery multi-zone wall-mount indoor unit features a customizable picture frame that doubles as a cooling and heating vent. Also, LG’s Medium and High-Temperature Hydro Kit Systems use a refrigerant-to-water heat exchanger to produce chilled or heated water. LG’s Split Compact M3 DOAS with Multi V S is suited to light commercial use where single-phase power is available and as an HVAC solution for outdoor air treatment. Easier Access for Technicians  Rheem Manufacturing New equipment at the Rheem Manufacturing booth at AHR Expo includes true multi-zone operation, smaller footprints, lighter weights, and components that are positioned for easy access by technicians. An LED in the control cabinet displays a fault code that identifies the problem to service technicians. The Resolute and Renaissance lines are commercially packaged heat pump units. The company is emphasizing the transition from R-410A to R-454B refrigerant by the end of 2024. Aeroseal Whether a new install or a retrofit, the product saves energy, saves money, and keeps customers compliant Aeroseal seals ducts by spraying a vinyl acetate polymer substance to increase HVAC efficiency. Whether a new install or a retrofit, the product saves energy, saves money, and keeps customers compliant, and a 30% tax deduction is available through the U.S. Inflation Reduction Act (IRA).  Airzone Airzone is a Spanish company that controls inverters and VRFs (variable refrigerant flow units). Their communication gateway controller incorporates protocols from various manufacturers, and the Easyzone is an easy-to-install zoning system.  Infinitum Infinitum manufactures a motor system that leverages a printed circuit board as a stator, making the motor system lighter weight and also smaller, quieter, and more efficient. The Aircore EC uses a standard printed circuit board manufacturing process to eliminate bearings. The component is used in blowers by OEMs Lau, Acme, Canarm, and Peerless, whose products are displayed at the booth.  Bell & Gossett Bell & Gossett debuts its line of smart, connected products designed to improve sustainability Bell & Gossett, a Xylem brand, debuts its line of smart, connected products designed to improve the sustainability of commercial buildings and reduce complexity in the design process. Combining pumps and smart motors are the e-1510 end-suction pump, e-80 vertical in-line pump, and TECHNOFORCE e-HV packaged booster system.  NIBCO Simplifying the job of an HVAC installer is the PressACR copper press connection system from NIBCO, which connects copper pipes without brazing, which involves soldering and high temperatures, thus a fire hazard. The patent-pending groove design and crimp pattern support the higher-pressure requirement of an HVACR system. Pipes are pressed together using PressACR jaws and adapter jaws in a variety of sizes. NIBCO also displayed its Webstone brand of residential and commercial valves.  Control Products Provide Data  Resideo Resideo displayed home system products, including the Honeywell Home T10+ thermostat with RedLINK 3.0; sensors enable temperature balancing for hot and cold spots. Pro-IQ Services provides software tools designed for the connected home, including insights on heating, cooling, water, and indoor air quality devices to help contractors track customers. Professional-grade water damage prevention, the First Alert L2 WiFi Water Sensor and Switch provide alarms if there is a water leak.  Schneider Electric The EcoStruxure Building Operation system is open system software for building and facility management Schneider Electric seeks to be “digital partners for our customers,” working with Fortune 500 companies seeking to achieve ESG (environment, social and corporate governance) goals. They help customers establish where they are currently vis-à-vis their goals and then deploy science-based key performance indicators (KPIs) to direct them to where they want to be. The EcoStruxure Building Operation system is open system software for building and facility management, including two products for the small and medium building (SMB) market. Energy measurement Schneider measures energy usage through power meters, indoor air quality, and energy spent to achieve efficiency, compiling data according to what the customer wants to achieve. They sell through a national sales team, direct branch business (20 branches), and 200 system integrators (EcoXperts). Their customers include QSR (quick-service restaurant chains) that control climate centrally with data compiled in the cloud.  Siemens Siemens displays solutions for smart, adaptable buildings for a sustainable tomorrow, including the Building X system and the Sustainability Manager application, providing an understanding of a building’s performance and tracking it against sustainability and compliance targets. The Building X Lifecycle Twin tracks operational building performance via a “digital twin,” providing an augmented reality (AR) headset through which one can view equipment with information superimposed on the screen. Uponor  Uponor seeks to leverage the capital cost of heating systems to deliver heating and hot water. They make pipes and connectors and other technologies, including the AuqaPort, which improves water quality and energy savings in domestic hot water (DHW) applications. They seek to future-proof buildings by combining energy efficiency and comfort. Water recirculates and provides hot water on demand using 40% less piping. A “radiant roll-out mat” is preconfigured piping that can be rolled out to simplify installation. 

Healthcare facilities require a substantial amount of energy to operate. In fact, the average hospital consumes approximately 250% more energy than a comparably sized commercial building, according to the U.S. Department of Energy. As hospitals face increasing financial pressure to boost revenue while cutting costs, many are turning to energy-reduction initiatives as a strategic remedy. At the heart of those efforts is often the HVAC system, which accounts for roughly one-sixth of a hospital’s total energy consumption. Broader energy initiative The broader energy initiative successfully delivered both energy savings and operational improvements That was the case at Baptist Health Medical Center – Little Rock, Arkansas's largest private, not-for-profit hospital. The century-old facility initially sought to replace its aging wooden cooling tower, which supported the hospital’s HVAC system. However, the project soon evolved into something much more ambitious: a comprehensive mechanical system overhaul designed to significantly reduce energy consumption. While the broader energy initiative successfully delivered both energy savings and operational improvements, it was the new cooling towers — ironically, the original catalyst for the project — that emerged as a surprisingly large contributor to the hospital’s ongoing power savings. Operating with efficiency  “Originally, the owners wanted to go with an engineered plastic cooling tower because they liked the fact that it was corrosion-proof, required far less upkeep, and came with a 20-year warranty,” says David Buie, an Account Manager in Controls Sales at Powers, who helped kick off the project. Based in North Little Rock, Arkansas, Powers is an HVAC, controls, and service company that partnered with the hospital to upgrade its cooling towers. However, as the project progressed, hospital leadership decided to broaden its scope to include a comprehensive review and optimization of the entire mechanical system. Bidding for the new cooling towers The final decision came down to two material options: HDPE engineered plastic and stainless steel To guide the expanded initiative, the hospital brought in an independent energy-efficiency engineering firm, which required competitive bidding for the new cooling towers. The final decision came down to two material options: high-density polyethylene (HDPE) engineered plastic and stainless steel. “Once the engineering company saw the energy that could be saved by utilizing the HDPE towers, there was really no looking back,” adds David Buie. A healthier bottom line Engineered plastic cooling towers were first pioneered by Delta Cooling Towers in the 1970s, and many of those original units remain in operation now. The energy savings delivered by these towers can be attributed to three key features: a modular design, multiple highly efficient motors and fans, and the use of variable-frequency drives (VFDs). “Because of the way Delta’s towers are essentially separate cells that work together, the hospital can stage them down when they’re not all needed,” explains Jared Hendrickson, Controls & Equipment Lead at Powers, adding “This can amount to huge savings on energy.” Precise load management Each cell contains two fans, all powered by VFDs that automatically reduce motor output Baptist Health Medical Center selected Delta’s TM Series, which consisted of 20 individual cells providing a total cooling capacity of 7,000 tons.  The modular design allows for precise load management, and each unit is equipped with smaller 60-inch fans, which significantly reduce energy consumption. Each cell contains two fans, all powered by VFDs that automatically reduce motor output when full fan speed isn’t required. Capabilities of the HDPE cooling towers “When you operate the fan motors at 80% speed or less, you're saving about 50% on power,” said Jared Hendrickson, adding “So, when you're talking about that much savings spread across 40 motors, the energy reduction is extensive.” In addition to the superior turndown capabilities of the HDPE cooling towers, these units also feature much smaller motors – 15 horsepower (hp) compared to 150 hp in the stainless-steel alternative – further contributing to long-term savings. Saving energy and improving operations  In addition to reducing energy consumption, Baptist Health Medical Center has also significantly lowered maintenance costs. One key reason is the construction of the HDPE cooling towers, which feature a one-piece molded casing. The design eliminates joints and seams — common failure points in traditional towers that often lead to leaks The design eliminates joints and seams — common failure points in traditional towers that often lead to leaks and ongoing repair needs. The towers are also equipped with direct-drive fans, eliminating the need for gearboxes that require frequent maintenance and routine oil checks. Additionally, while all cooling tower systems require chemical treatments to control algae, pathogens, and sediment buildup – all of which can hinder performance – the HDPE towers are immune to the corrosive effects of these chemicals. Another advantage for contractors “The chemical treatment is going to eat away at a metal tower, even a stainless tower, over time,” notes Jared Hendrickson. Installation time offers another advantage for contractors. HDPE systems can often be installed in just a day or two, compared to the multiple days, or even weeks, required for towers made from other materials. “There are only two pieces held together by eight bolts,” explains Jared Hendrickson, adding “Compare that to a thousand bolts and a thousand metal components on other towers. There's also no gasketing and caulking of panels before assembly. It’s a very simple installation process.” A clean bill of (energy) health  Energy-efficiency measures don’t just reduce consumption, they can improve overall operations through optimized HVAC performance and smarter energy management. At Baptist Health Medical Center, the new cooling towers, installed at ground level, have also contributed to a quieter, more controlled medical environment. Hospitals face unique challenges when it comes to energy use. Compliance with regulations like ASHRAE Standard 170 – which governs temperature, humidity, and air exchange rates – places constant pressure on facility executives, energy managers, and engineers to find sustainable, high-performance solutions.  Through careful selection of its cooling tower system and strategic mechanical upgrades, Baptist Health’s flagship facility achieved measurable, long-term power savings without compromising compliance or patient care.

When Harry Lau, Administrator for Facilities and Operations for the Livonia Public Schools, joined the district in 2013, he identified a significant need to improve the HVAC equipment throughout the entire school system. All 25 buildings, including schools and administration offices, had significant inefficiencies with their HVAC systems. The infrastructure was outdated and the horizontal unit ventilators that were in use were from the 1950s and 60s and were well beyond their life expectancy. The old units were prone to freezing, and there were control issues that further exacerbated the problem. Poor indoor air quality (IAQ) and inefficient temperature controls led to discomfort among staff and students, impacting the overall learning environment. His primary goal was to reduce the number of environmental air quality concerns, reduce district utility and maintenance costs, and improve the overall comfort and air quality throughout the system. The Solution To address these issues, Livonia Public Schools secured funds via a successful bond measure To address these issues, Livonia Public Schools secured funds through a successful bond measure. There were multiple contractors and manufacturers involved for the entire system upgrade, but for the classrooms specifically, the district chose to upgrade to Airedale by Modine Classmate® vertical units. Looking at the specifications of these units, Harry was certain the Classmate® would meet their needs.  The previous units had structural and design issues that led to multiple repairs, and Harry knew that they would have fewer maintenance issues with the Classmate® because of the way they are designed. They also chose to modernize control of the system by implementing a building management system allowing for real-time monitoring and centralized management of the HVAC systems across all buildings. The Results The HVAC system upgrades have resulted in dramatic improvements in IAQ and energy efficiency. The new systems have provided better temperature control, faster cooling, and heating, and have reduced energy consumption by 20%. The upgraded systems also led to a quieter environment, enhancing the learning experience. The ability to monitor and manage the HVAC systems in real time has allowed for proactive maintenance and further cost savings. Harry said he wanted the classroom instructors to have some anonymity with temperature control. While the set points follow ASHRAE recommendations, the units are equipped to give the teachers some control to bump the temperature up or down a few degrees to suit their comfort level and those of the students.  "With partners like Modine, they opened our eyes on ways of doing things," said Harry Lau, adding "It has been refreshing to actually be heard by the professionals." Implementation of HVAC upgrades Livonia Public Schools has been recognized by the U.S. DOE’s Efficient and Healthy Schools Program Because of their commitment to improving IAQ and energy efficiency, Livonia Public Schools has been recognized by the U.S. Department of Energy’s Efficient and Healthy Schools Program. This program recognizes and assists school districts seeking to implement high-impact indoor air quality and efficiency improvements. They were honored for optimizing their operations to improve building performance. The district was also recognized by the city as a green energy partner. Harry said that the classroom learning environments have been dramatically updated and they have seen a significant improvement. The consistent modulation of the fresh air has been greatly noticed. Livonia Public Schools’ proactive approach to HVAC upgrades A huge point of pride for the district was being able to confidently inform their staff and parents that they were ahead of the curve in ensuring quality indoor air once students and staff were able to return to indoor classroom learning during the COVID-19 pandemic.  Livonia Public Schools’ proactive approach and successful implementation of HVAC upgrades have set a benchmark for other districts aiming to improve their learning environments through better air quality and energy efficiency.

Kepier School's phased transition to low-carbon CIAT heating technologies has delivered generous energy savings within a year of installation. CIAT worked with partners to initiate the school’s journey to net zero in 2022, returning to measure performance and optimize the system. CIAT is a part of Carrier Global Corporation, a global pioneer in intelligent climate and energy solutions. New high-efficiency heat emitters CIAT worked with BREng Hull Ltd, AA Projects, Quora Group, and Cool Designs Ltd to create a phased decarbonization plan for Kepier School in Northeast England, aided by the Condition Improvement Fund (CIF). Recognizing the challenges faced by many schools, Oliver Sanders, Carrier Commercial HVAC Director, United Kingdom, and Ireland, said, "For schools with new gas boilers aiming to reach net zero, it's most cost-effective to integrate them into a modernized heating infrastructure, ready for the next transition phase to heat pumps when the boilers reach end-of-life." Project featured a heating audit The project involved a heating audit identifying the need for new high-efficiency heat emitters The project involved a heating audit identifying the need for new high-efficiency heat emitters. Conventional radiators were replaced with seven surface-mounted high-level CIAT MajorLine and 31 CIAT COADIS fan coil units (FCUs). The seven gas boilers installed in 2019 were integrated into the new system's infrastructure, enabling them to be replaced as required to improve system efficiency and cost savings. Sizeable energy savings A subsequent review revealed sizeable energy savings. Gas usage was compared before and after the pandemic to avoid skewed data due to COVID-19 school closures. Findings revealed an 8.6% reduction of 2,824 m3 (~31,446.41 kWhr) from March 2022 to March 2023 compared to the period from March 2019 to March 2020. This achievement reduced the school’s carbon footprint and resulted in an 8% annual cost saving of ~£800 (average based on gas price fluctuations between March 2019-2020 and March 2022-2023). CIAT project partners BREng Hull  CIAT project partners BREng Hull and installer Quora Group returned to the school to optimize system operating gains Following commission, CIAT project partners BREng Hull and installer Quora Group returned to the school to optimize system operating gains.  "The process doesn’t stop once a solution has been designed, installed, and commissioned," said Rob Smelt, Managing Director of BREng Hull, adding "Experience shows that there are often significant additional gains to be made by optimizing the system in light of its real-world operation." The inspection revealed that some areas were imbalanced while others operated at sub-optimal temperatures. These issues were addressed to improve occupant comfort and reduce energy use and running costs. Carrier’s 2030 ESG Goal "The comfort level has improved significantly," said Brian Dixon, Kepier School Estates Manager, adding "We already gained control over specific rooms and areas, as opposed to the old ‘on or off’ heating system, and the latest work seems to have improved things even more. Future phases in our decarbonization plan will yield even greater energy and cost savings for the school." BREng Hull worked closely with equipment supplier Cool Designs Ltd during the scoping and specification stages, supported by CIAT application specialists. Projects like these contribute to Carrier’s 2030 Environmental, Social and Governance (ESG) Goal of reducing its customers’ carbon footprint by more than one gigaton.

To adequately heat the 111 Murray Street residential skyscraper in New York, the owner sought an effective way to maintain the aesthetic of the mostly glass building without being obtrusive to its design. Custom convection style heaters, mounted in the building’s millwork by Faber Industrial Technologies, proved to be the game-changing resolution. Residential And Commercial Applications “Convection heaters provide warmth and heat to a specific area or room by circulating air and heating it using a highly efficient electric element,” explained Andrew Martin, Manager of Product Management with Marley Engineered Products. Andrew Martin adds, “Designed for quiet, controlled comfort, they are ideal for both residential and commercial applications, including living rooms and bedrooms, offices, hallways, lobbies, conference rooms, retail stores, and buildings with floor-to-ceiling windows.” Installing Heaters While Maintaining Aesthetics Due to mechanical constraints exacerbated by the building’s slim design, hot water was not available Located in the Financial District and Tribeca neighborhoods in Lower Manhattan, 111 Murray Street is a 792-foot-tall residential skyscraper with 156 luxury condominiums and 2,100 square feet of retail space on the ground floor. Due to mechanical constraints exacerbated by the building’s slim design, hot water was not available in most of the upper residences, rendering hydronic heating systems impractical. Berko ASL3 convector heaters Therefore, the client requested Berko ASL3 convector heaters from Marley Engineered Products to be installed for elegant, supplemental comfort for heat loss, condensation prevention, and continuous warmth throughout each condo. The challenge, however, came from their preference to keep the heaters hidden for aesthetic reasons. Custom design “The varying heights and angles of the millwork in each condo limited our ability to install the heaters directly where we wanted them,” said Christopher Smith, a Heater Manufacturing Representative with Faber Industrial Technologies. He adds, “Therefore, we needed a custom design that enabled us to mount the heaters properly while also keeping them out of sight.” Delivery of convector heaters Another issue was revealed when the contractor requested the materials be delivered to each floor Another issue was revealed when the contractor requested the materials be delivered to each floor. Working in tandem with Technical Air Systems, Inc., a regional supplier of HVAC equipment to the metropolitan New York and New Jersey areas, Marley Engineered Products’ customer service and shipping teams were instrumental in coordinating the delivery of the convector heaters in a congested lower west side intersection between West Side Highway and Murray Street. Hidden Heat For Unmatched Comfort And Elegance The solution involved fabricating and supplying custom dual inlet convector heaters, which were then mounted within the millwork of each condominium unit. Using a thermocouple array, the engineering team at Marley tested the Berko ASL3 connectors, at 125 watts per foot and 120V inside a customer-supplied demo millwork section sent from New York City.  After making some adjustments to the design, thermal couplers were utilized on both the heaters and their enclosures to ensure their surface temperatures were within Marley Engineered Products’ limits to pass a UL site inspection. Invisible solution Next, Smith coordinated with the electrical and mechanical contractors on-site to fit the heaters into each condo’s temperature control system using power relays. The result was an 'invisible solution' in which none of the controls or heaters could be seen in the residential units. Seamlessly blending functionality and aesthetics Innovation and collaboration converged as we tailored a custom heating solution" “Innovation and collaboration converged as we tailored a custom heating solution, seamlessly blending functionality and aesthetics,” explained Smith, adding “In fabricating this ‘invisible solution’ for the client, our dedicated team and the coordination of skilled contractors transformed these condos into spaces that harmonize comfort and elegance and exemplify the blending of form and function.” UL evaluation The success of the project not only resulted in an extremely satisfied customer but also left the contractors pleased with the uninterrupted delivery and installation of the heaters. They were further impressed when the custom heater and millwork system passed the UL site inspector's test after just one evaluation.  2023 Jim Herring Memorial Silver Fox Award To acknowledge the innovative approach and exceptional achievements demonstrated by the Faber team in overcoming the challenges faced during this project, Marley Engineered Products awarded Smith the 2023 Jim Herring Memorial Silver Fox Award at its recent national sales meeting. “This award for excellence in solution design embodies the spirit of Herring, who was always up for a challenge and most happy when solving a unique heating or ventilation problem,” said Sean Pesce, Acting Director of Sales for Marley Engineered Products, adding “Chris and his team perfectly captured Jim’s talent for finding creative solutions to the most complex issues and left a lasting impression on the client.”

Johnston County Public Schools, located in Smithfield, North Carolina, chose Carrier to improve energy efficiency and comfort at five schools. Carrier is a part of Carrier Global Corporation, a global pioneer in intelligent climate and energy solutions. AquaSnap® 30RB Johnston County Public Schools (JCPS), located in one of the nation’s fastest-growing counties, is the seventh-largest school district in the state. JCPS used money from the U.S. Department of Education’s Elementary and Secondary School Emergency Relief (ESSER) Fund to replace a dozen chillers. The school district selected Carrier’s AquaSnap® 30RB, an air-cooled liquid chiller offering an effective all-in-one package that is easy to install and maintain. New Equipment Replaced Old Chillers The schools are in North Carolina’s fastest-growing county with 5,000 students enrolled at the five schools The new equipment replaced chillers that were between 20 and 25 years old at Cleveland Elementary, West Clayton Elementary, and Clayton High in Clayton; McGee’s Crossroads Elementary in Angier; and Glendale-Kenly Elementary in Kenly. According to the latest census data, the schools are in North Carolina’s fastest-growing county with 5,000 students enrolled at the five schools and are part of a larger school system with more than 37,000 students in 48 schools. On-Site Training For Staff In addition to the startup of the chillers, Carrier also provided on-site training for the school system’s maintenance staff ahead of the new school year. “Johnston County Public Schools appreciates that Carrier’s AquaSnap Greenspeed intelligence technology provides best-in-class part-load efficiency with quiet part-load operation,” said Philip Samartino, Sales Specialist, Carrier. Shell And Tube Evaporator Philip Samartino adds, “The school district needed the reliability of the aluminum fin copper tube condenser coils and simplicity of the scroll compressor technology to handle compressor repairs in-house. Many schools also have older piping infrastructure so they preferred the shell and tube evaporator as it is less susceptible to fouling and clogging up from dirty piping systems.” AquaSnap 30RB features In addition to Greenspeed® intelligence, the AquaSnap 30RB features a rotary scroll compressor, Puron® refrigerant, a quiet AeroAcoustic™ fan system, easy to use ComfortLink™ controls, microchannel condenser coil technology, and high-efficiency variable condenser fans. “Carrier is working with school districts nationwide to implement layered HVAC replacement and retrofit solutions that improve learning environments,” said Meredith Emmerich, Vice President, of North America Commercial HVAC, Carrier. Meredith Emmerich adds, “With solutions tailored to each school’s needs, Carrier is committed to helping foster the long-term well-being of students and staff and encourage the use of ESSER funds to make critical improvements that will impact generations of students.”

The well-known Italian brand, Big Mamma Restaurant Group, has recently transformed an old four story bank into a striking new restaurant, Jacuzzi, in the heart of High Street Kensington, West London, United Kingdom (UK). In keeping with the grand design of this new ‘pleasure palazzo’, the interior environment needed to offer ultimate comfort and to help create a memorable and luxurious dining experience. Summit Design specified, designed and installed the comprehensive new heating and cooling system, utilizing two 45kW Panasonic 3-pipe ECOi EX MF3 units with nanoe X technology. Panasonic 3-pipe ECOi EX MF3 units installed The Big Mamma Group selected the abandoned old bank building on Kensington High Street The Big Mamma Group selected the abandoned old bank building on Kensington High Street, for its fourth restaurant in London – Jacuzzi, a luxurious 170-seat Italian dining experience. Be-decked with high end Italian treasures and decadent interior design, the site covers four floors, including a Sicilian mezzanine floor with a retractable roof opening out to the bustle of High Street Kensington. Transforming the old historic bank building to a fully functional and fit for purpose restaurant required extensive renovations, including an entirely new heating, cooling and hot water system. To service the 4,000 sq. ft building, Jacuzzi needed a high-capacity performance and energy efficient solution, providing heating and cooling with accurate climate control and ultimate comfort.  Panasonic 45kW 3-pipe ECOi EX MF3 series With Summit Design’s in-depth understanding and knowledge of heating and cooling, the company specified two Panasonic 45kW 3-pipe ECOi EX MF3 series with nanoe X and with a range of indoor units including adaptive ducted, 4-way cassettes, ceiling suspended, floor mounted, wall mounted and slim ducted units. “The Panasonic ECOi EX series is one of the most advanced VRF systems currently on the market, offering not only high performance for simultaneous heating and cooling but also sophisticated installation,” says Dan Sparling of Summit Designs, adding “The solution is ideal for commercial applications having enough capacity to run the energy efficient system for the entire building.” Dan Sparling adds, “Furthermore, the wide selection of indoor units that the Panasonic range offers meant that we could adapt the system design to select the best and most appropriate indoor units, ensuring best choice for each space. It was very important for the heating, cooling and ventilation system to blend seamlessly into the interior design, so as to not distract in any away from the impressive diner experience and general ambience of this high-end restaurant.” Powerful performance for both heating and cooling The Panasonic ECOi EX MF3 offers powerful performance for both heating and cooling The Panasonic ECOi EX MF3 offers powerful performance for both heating and cooling. Designed with a twin rotary inverter compressor, the system is highly energy efficient even in extreme ambient temperatures of say 43 degree C and continue to cool, even when the outside temperature reaches a maximum of 52 degree C, with a high SEER of 3.49 and SCOP of 4.17. The optimized energy consumption was enhanced by the addition of the heat recovery box, which was able to connect multiple indoor units with a single box. The heat exchanger captures the waste heat from the cooling operation and is able to redirect it using the 3-pipe system to areas requiring heating. This capability allows the system to heat and cool multiple areas simultaneously, allowing for greater independent climate control across the four floors and flexibility in meeting a comfortable climate for all. Panasonic system offers flexibility The installation at the large Jacuzzi property was made easier by the flexibility of the Panasonic system. The units provide up to 1000 m of piping and up to 30 m height difference between the indoor units, meaning the system was able to extend its reach across all four floors with ease. The ECOi EX MF3 system provides easy to use and effective temperature and humidity controls, has a newly designed fan for optimized airflow, and customizable settings that can be tailored to suit the needs of the building. Panasonic ECOi units come as standard with nanoe X The Panasonic ECOi units now all come as standard with nanoe X technology" “The Panasonic ECOi units now all come as standard with nanoe X technology, a great benefit that really adds value, especially to a luxury dining experience like the new Jacuzzi restaurant,” said Rachel Wales, Regional Sales Manager for Panasonic. Rachel Wales adds, “The nanoe X technology inhibits the growth of harmful bacteria, viruses, and other airborne pollutants. With nanoe X, the system can reduce unpleasant odors, tackle mold and allergens and even help keep hard and soft surfaces clean, all of which culminate in creating a better indoor air quality and enhancing the experience for staff and guests alike.” Quick and convenient installation The Panasonic system was able to be installed quickly without any problems, helping deliver the opening of the new restaurant on time. Dan Sparling stated, “We are so pleased with the operation of the system so far and are assured that staff and guests of the restaurant are kept comfortable throughout their experience.”

For schools, improving indoor air quality (IAQ) is a basic function of HVAC systems, which also ensures a high comfort level for students, teachers and staff. Schools can be a lucrative market for HVAC systems, but there are challenges, such as long sales cycles and the lingering impact of the COVID-19 pandemic. We asked our Expert Panel Roundtable: What are the challenges for HVAC in serving the education/schools market?

The practice of working from home soared during the coronavirus (COVID-19) pandemic and many observers see a likely continuation of the trend, as infection risks gradually subside. Both environments – home and office – depend on HVAC systems to keep occupants comfortable (and safe!). Therefore, the industry stands to be impacted whichever way the trend plays out. We asked our Expert Panel Roundtable: How will remote working affect residential and commercial HVAC?

The Internet of Things (IoT) is the network of physical objects embedded with sensors, software and other technologies to facilitate connecting and exchanging data with other devices and systems over the internet. Use of the IoT is expanding among both business and residential applications. However, there are hurdles to overcome, including security, privacy and networking challenges. As more HVAC devices embrace the IoT, we asked our Expert Panel Roundtable: What is the impact of the Internet of Things (IoT) on the HVAC market?