R-32

Air-Con International, a globally renowned provider of reliable HVAC solutions, highlights the superior benefits of R32 refrigerant as a core component of its TOSOT product line, delivering advanced heating and cooling for both residential and commercial applications. With a focus on energy efficiency, operating performance, and environmental responsibility, Air-Con International continues to provide innovative climate control solutions designed to meet the evolving needs of modern customers. TOSOT systems R32 refrigerant enables TOSOT systems to deliver reduced operating costs and superior performance Engineered for efficiency, R32 refrigerant enables TOSOT systems to deliver reduced operating costs and superior performance in both heating and cooling modes. R32 refrigerant has been widely used and trusted in the HVAC industry for years. This established track record makes R32 much more cost-effective and readily available compared to newer alternatives, providing customers and installers with an accessible and proven solution. Future regulatory requirements The reduced refrigerant charge required by R32 lowers the environmental impact while enhancing overall system efficiency, reflecting a commitment to more sustainable HVAC technology. By using R32, Air-Con International ensures its systems are well-positioned to meet future regulatory requirements and market demand for greener products. Advantages of R32 The advantages of R32 extend across the entire TOSOT lineup. Customers benefit from advanced inverter technology, delivering rapid, precise temperature control, quieter operation, and less energy wasted.  TOSOT systems maintain reassuringly quiet indoor environments and deliver reliability in a wide range of climates, performing dependably whether temperatures are soaring or dropping well below freezing. Compact, flexible system designs simplify installation and are ideal for both new construction and retrofit projects. Smart control and timer functions Modern comfort is further enhanced through smart control and timer functions Modern comfort is further enhanced through smart control and timer functions, providing users with convenient scheduling and remote access via connected devices. Consistent airflow, stable indoor temperatures, and improved air quality define the everyday experience in spaces served by TOSOT systems using R32 refrigerant. Safety and serviceability are at the forefront, with enhanced safety features tailored for mildly flammable refrigerants and intelligent self-diagnostic capabilities making maintenance straightforward for technicians and users alike. Implementation of R32 refrigerant in the TOSOT Durability and protection are also prominently featured across the product line, with robust outdoor units incorporating Blue Fin shielding to guard against rust and corrosion even in challenging environments. Key electrical components are strategically fireproofed, and intelligent defrosting technology automatically maintains optimal performance in cold conditions. Through the implementation of R32 refrigerant in the TOSOT product series, Air-Con International reinforces its dedication to delivering efficient, safe, and environmentally conscious solutions. Advanced refrigerant technology and innovative product features By bringing together advanced refrigerant technology and innovative product features, Air-Con International empowers customers to achieve dependable comfort, energy savings, and a smaller environmental footprint. Air-Con International continues to serve as a trusted partner in the HVAC industry, combining technical expertise with responsive support and practical solutions tailored to the needs of residential and commercial customers.

Air-Con International, a pioneering provider of reliable HVAC solutions, highlights the superior benefits of R32 refrigerant as a core component of its TOSOT product line, delivering advanced heating and cooling for both residential and commercial applications. With a focus on energy efficiency, operating performance, and environmental responsibility, Air-Con International continues to provide innovative climate control solutions designed to meet the evolving needs of modern customers. Heating and cooling modes R32 refrigerant has been widely used and trusted in the HVAC industry for years Engineered for efficiency, R32 refrigerant enables TOSOT systems to deliver reduced operating costs and superior performance in both heating and cooling modes. R32 refrigerant has been widely used and trusted in the HVAC industry for years.  This established track record makes R32 much more cost-effective and readily available compared to newer alternatives, providing customers and installers with an accessible and proven solution. Future regulatory requirements The reduced refrigerant charge required by R32 lowers the environmental impact, while enhancing overall system efficiency, reflecting a commitment to more sustainable HVAC technology. By using R32, Air-Con International ensures its systems are well-positioned to meet future regulatory requirements and market demand for greener products. Advantages of R32 TOSOT systems maintain reassuringly quiet indoor environments and deliver reliability in a wide range of climates The advantages of R32 extend across the entire TOSOT lineup. Customers benefit from advanced inverter technology, delivering rapid, precise temperature control, quieter operation, and less energy wasted. TOSOT systems maintain reassuringly quiet indoor environments and deliver reliability in a wide range of climates, performing dependably whether temperatures are soaring or dropping well below freezing. Compact, flexible system designs simplify installation and are ideal for both new construction and retrofit projects. TOSOT systems using R32 refrigerant Modern comfort is further enhanced through smart control and timer functions, providing users with convenient scheduling and remote access via connected devices. Consistent airflow, stable indoor temperatures, and improved air quality define the everyday experience in spaces served by TOSOT systems using R32 refrigerant. Safety and serviceability are at the forefront, with enhanced safety features tailored for mildly flammable refrigerants and intelligent self-diagnostic capabilities making maintenance straightforward for technicians and users alike. Key electrical components Durability and protection are also prominently featured across the product line, with robust outdoor units Durability and protection are also prominently featured across the product line, with robust outdoor units incorporating Blue Fin shielding to guard against rust and corrosion even in challenging environments. Key electrical components are strategically fireproofed, and intelligent defrosting technology automatically maintains optimal performance in cold conditions. Implementation of R32 refrigerant Through the implementation of R32 refrigerant in the TOSOT product series, Air-Con International reinforces its dedication to delivering efficient, safe, and environmentally conscious solutions.  By bringing together advanced refrigerant technology and innovative product features, Air-Con International empowers customers to achieve dependable comfort, energy savings, and a smaller environmental footprint. Air-Con International continues to serve as a trusted partner in the HVAC industry, combining technical expertise with responsive support and practical solutions tailored to the needs of residential and commercial customers.

Air-Con International, a global provider of reliable HVAC solutions, highlights the superior benefits of R32 refrigerant as a core component of its TOSOT product line, delivering advanced heating and cooling for both residential and commercial applications. With a focus on energy efficiency, operating performance, and environmental responsibility, Air-Con International continues to provide innovative climate control solutions designed to meet the evolving needs of modern customers. TOSOT systems R32 refrigerant has been widely used and trusted in the HVAC industry for years Engineered for efficiency, R32 refrigerant enables TOSOT systems to deliver reduced operating costs and superior performance in both heating and cooling modes. R32 refrigerant has been widely used and trusted in the HVAC industry for years. This established track record makes R32 much more cost-effective and readily available compared to newer alternatives, providing customers and installers with an accessible and proven solution. Demand for greener products The reduced refrigerant charge required by R32 lowers the environmental impact while enhancing overall system efficiency, reflecting a commitment to more sustainable HVAC technology. By using R32, Air-Con International ensures its systems are well positioned to meet future regulatory requirements and market demand for greener products. Advantages of R32 Customers benefit from advanced inverter technology, delivering rapid, precise temperature control The advantages of R32 extend across the entire TOSOT lineup. Customers benefit from advanced inverter technology, delivering rapid, precise temperature control, quieter operation, and less energy wasted. TOSOT systems maintain reassuringly quiet indoor environments and deliver reliability in a wide range of climates, performing dependably whether temperatures are soaring or dropping well below freezing. Compact, flexible system designs simplify installation and are ideal for both new construction and retrofit projects. TOSOT systems using R32 refrigerant Modern comfort is further enhanced through smart control and timer functions, providing users with convenient scheduling and remote access via connected devices. Consistent airflow, stable indoor temperatures, and improved air quality define the everyday experience in spaces served by TOSOT systems using R32 refrigerant. Safety and serviceability are at the forefront, with enhanced safety features tailored for mildly flammable refrigerants and intelligent self-diagnostic capabilities making maintenance straightforward for technicians and users alike. Implementation of R32 refrigerant Air-Con International reinforces its faith to giving efficient, safe, and environmentally solutions Durability and protection are also prominently featured across the product line, with robust outdoor units incorporating Blue Fin shielding to guard against rust and corrosion even in challenging environments. Key electrical components are strategically fireproofed, and intelligent defrosting technology automatically maintains optimal performance in cold conditions. Through the implementation of R32 refrigerant in the TOSOT product series, Air-Con International reinforces its dedication to delivering efficient, safe, and environmentally conscious solutions. Advanced refrigerant technology By bringing together advanced refrigerant technology and innovative product features, Air-Con International empowers customers to achieve dependable comfort, energy savings, and a smaller environmental footprint. Air-Con International continues to serve as a trusted partner in the HVAC industry, combining technical expertise with responsive support and practical solutions tailored to the needs of residential and commercial customers.

LG Electronics is expanding the global availability of its latest air-cooled Inverter Scroll Chiller, a next-generation HVAC solution that supports the worldwide shift toward low-Global Warming Potential (GWP) refrigerants and sustainable technologies. The new model adopts R32 refrigerant, which has a GWP approximately 70 percent lower than R410A. Designed as an inverter-driven heat pump system, the chiller delivers both chilled and hot water, making it suitable for mid-sized commercial buildings requiring reliable thermal management throughout the year. Reduction in energy consumption LG is continuing to expand the availability of the Inverter Scroll Chiller globally in 2025 Following initial launches in North America, Europe, and South Korea, LG is continuing to expand the availability of the Inverter Scroll Chiller globally in 2025. One notable installation at Garden Grove Elementary School in Winter Haven, Fla., replaced an aging 60-ton unit with three LG Inverter Scroll Chillers.  The school has since seen an 18 percent reduction in energy consumption, along with quieter operation – also an important factor in its residential setting. LG’s latest Inverter Scroll Chiller “LG’s latest Inverter Scroll Chiller is designed to deliver high energy efficiency and flexible system management, allowing customers to meet real-world HVAC demands with confidence,” said LG Electronics ES Company President, James Lee. He adds, “This system exemplifies LG’s commitment to providing high-performance, reliable solutions that offer long-term value while contributing to a more energy-efficient and sustainable future.” High Energy Efficiency Inverter Scroll Chiller is designed to deliver prime energy efficiency under a span of operating conditions The new Inverter Scroll Chiller is designed to provide exceptional energy efficiency under a variety of operating conditions. Powered by LG’s All-Inverter compressor, which operates across a wide frequency range (30Hz to 120Hz), it offers high performance and reduced energy consumption even under partial load. LG’s proprietary HiPOR™ (High Pressure Oil Return) system enhances compressor efficiency by returning oil directly into the compression chamber, significantly reducing energy loss. As a result, the unit achieves an Integrated Part Load Value (IPLV) of up to 5.9. Select models also feature heat exchangers optimized for a broad water outlet temperature range, from 14 degrees Fahrenheit to 140 degrees Fahrenheit, offering flexibility for diverse applications. High Reliability for Year-Round Operation The chiller is built to support dependable performance across various seasons and climates. With twin All-Inverter compressors and vapor injection technology, the system maintains stable heating capacity even in extreme cold, modulating down to 20 percent load. In high ambient conditions, a refrigerant-cooled heat sink helps maintain operation at up to 126 degrees Fahrenheit offering a potential advantage over conventional air-cooled systems. LG’s corrosion-resistant Black Fin coating The system includes features, such as compressor backup, intelligent control logic, and sequential defrost To support uninterrupted operation under demanding conditions, the system includes features such as compressor backup, intelligent control logic, and sequential defrost.  It also supports hot water output up to 140 degrees Fahrenheit, helping suppress Legionella bacteria growth and contributing to hygienic operation in facilities, such as spas, hotel,s and hospitals. For added durability in coastal or humid regions, the heat exchanger is treated with LG’s corrosion-resistant Black Fin coating. Comprehensive and Resilient Control System The chiller supports adaptable control options based on project size: Small installations can use an intuitive 5-inch Human Machine Interface (HMI) touch panel for on-site control, with remote installation supported up to 500 meters. Mid-sized projects benefit from LG’s ACP and AC Smart controllers, which support up to 10 units with features, such as scheduling, input/output linkage, and error tracking. Larger applications are supported by the LG Building Energy Control (BECON) CPM platform, which can coordinate up to 30 chillers and manage auxiliary devices like pumps, valves, and sensors to improve overall system efficiency. Reduce power consumption An integrated energy-saving algorithm helps reduce power consumption by up to 10 percent, while an auto-recovery feature restores previous settings after a power outage to help minimize downtime. Features such as compressor backup and sequential defrost contribute to continuous operation during maintenance. The chiller also operates at a low noise level of 68 dB, with a Silent Operation mode available for quieter performance during off-peak hours.

Hydronic heating has a long history of innovation in the boiler industry, driven by advancements in efficiency, performance, and sustainability. The portfolio of many companies’ modern heating solutions includes industry-leading condensing boilers and cast-iron boilers, which have set benchmarks for energy efficiency and reliability. However, as the market rapidly evolves toward more sustainable practices, there is an increasing focus on technologies such as air-to-water heat pumps and dual-fuel systems to meet growing demand for decarbonization. Importance of Hybrid and Dual-Fuel Systems Decarbonization is a major trend in the HVAC industry, driven by climate initiatives and policy changes Decarbonization is a major trend in the HVAC industry, driven by climate initiatives and policy changes. Many manufacturers are taking a hybrid approach by combining the strengths of boilers with air-to-water heat pump technology. This dual-fuel solution provides homeowners with the best of both worlds: the reliable, high-output heating of a boiler for the coldest days of the year, paired with the efficiency of a heat pump for milder conditions. Dual-fuel systems integrate an air-to-water heat pump with a traditional hot water boiler, where the heat pump manages a significant portion of the seasonal heating load, and the boiler supplements heating only during extreme cold. This approach balances efficiency, performance and comfort while ensuring redundancy and reliability. Most hybrid systems transition to boiler backup around 30°F (± 10°F) to ensure optimal efficiency and comfort. The Role of Water Temperature One critical difference between heat pumps and boilers lies in water temperature. Heat pumps typically deliver water at around 140°F, whereas many traditional boiler systems operate at 180°F to ensure comfort on the coldest days. However, data show most homes experience peak heating demand for only a short period each year. This trend presents an opportunity to leverage the energy efficiency of heat pumps during milder conditions while relying on high-temperature boiler output only when necessary. Legislative and Regulatory Drivers For older homes with legacy cast-iron boilers, this shows a pathway to improve the efficiency of heating systems Recent legislative efforts, such as the Inflation Reduction Act, provide incentives for homeowners to adopt energy-efficient technologies. Programs like the Home Efficiency Rebate and Home Electrification Appliance Rebates are designed to subsidize the adoption of heat pumps and necessary electrical infrastructure upgrades. For older homes with legacy cast-iron boilers, this presents a pathway to improve efficiency and decarbonize heating systems. The dual-fuel approach aligns with these initiatives, providing a transition solution that allows homeowners to integrate modern heating technologies while maintaining system reliability. Role of Dual-Fuel Solutions in Modern Heating The industry continues to invest in the next generation of hydronic heating solutions, with modern dual-fuel systems offering: Optimized Efficiency: The heat pump handles much of the heating season, offsetting 70%-80% of the expected heating load, which reduces boiler runtime and lowers energy costs. Advanced Smart Control Systems: Indoor split units manage heat pump operation, ensuring seamless transitions between heat sources. Adaptability for High-Temperature Applications: Heat pumps operate effectively at outdoor temperatures as low as -13°F, with peak supply temperatures reaching 149°F and a Coefficient of Performance (COP) ranging from 4.50 to 5.37 to maintain optimal efficiency. Eco-Friendly Refrigerant: Many modern heat pumps utilize R-32 refrigerant, which offers enhanced efficiency and environmental benefits. Extended Equipment Life Expectancy: By using the heat pump for most of the heating season, boiler wear and tear is reduced, leading to longer system longevity. Staged Installation Flexibility: Homeowners can install components in phases to minimize upfront costs and disruption. Rebate and Incentive Eligibility: These systems qualify for federal, state and local tax credits and rebate programs where available. Performance Calculators for Optimized Efficiency To ensure efficiency and ease of integration, advanced performance calculators have been developed to support system design. These tools: Conduct load calculations (Manual J) for precise system sizing. Analyze efficiency projections using bin data to maximize heat pump contribution. Enable data-driven decision-making to prioritize comfort and cost savings. Ensure proper application sizing by factoring in heat load, heat pump capacity, heat emitter capacity, domestic hot water (DHW) needs, weather bin data, localized utility rates and rebates. Flexible Installation and Retrofit Options Dual-fuel systems offer multiple installation pathways to accommodate different customer needs: All-at-Once Installation: Suitable for homeowners looking to replace their heating system immediately, with labor efficiencies and lower total installation costs. Phased Installation: If a boiler fails in the winter, a heat pump-ready boiler and indoor unit can be installed first, with the outdoor heat pump added later in warmer months. This reduces upfront costs and allows for future system expansion. Retrofit Upgrade: Homeowners with a heat pump-ready boiler can seamlessly integrate a heat pump into their system with minimal piping changes. Educating Contractors and the Industry To support the adoption of these technologies, industry pioneers provide education and training for contractors To support the adoption of these technologies, industry pioneers provide education and training for contractors. These programs offer training on the latest advancements in heat pump and hybrid system technologies and help contractors understand system design, installation best practices and how to leverage available rebates for their customers. They also provide real-time technical support for troubleshooting and system optimization. Efficiency and Comfort with Adaptive Heating Technologies Adaptive heating balance technologies enable dual-fuel systems to dynamically adjust heating sources based on real-time conditions. This ensures: Steady & Efficient Operation: Longer heat pump runtimes at lower modulation improve efficiency and reduce cycling. Enhanced Comfort: Avoids short, high-intensity cycles for stable indoor temperatures. Seamless Backup Heat: The boiler engages only when needed, such as during extreme weather or defrost cycles. Dynamic Adaptation: The system continuously optimizes its performance based on environmental conditions using temperature-over-time algorithms that adjust heating output in real time. Looking Ahead: The Future of Hybrid Heating As the HVAC industry continues to evolve, heat pumps are emerging as the foundation for future decarbonization efforts. By integrating heat pumps with boilers and exploring additional technologies like thermal storage and hydronic cooling, the industry can deliver greater energy efficiency and carbon reductions. Manufacturers’ adaptive heating balance technologies ensure seamless transitions between heating sources, maintaining optimal comfort levels year-round. The industry is committed to merging the legacy of hydronic heating excellence with cutting-edge hybrid technologies, helping homeowners and businesses transition toward more sustainable, efficient heating and electrification-ready solutions.

Forward-thinking, flexible solution designed to work seamlessly with legacy refrigerants like R-410A, as well as A2L and low-GWP alternatives—all in a single valve that helps contractors reduce truck stock and job time, while allowing wholesalers to streamline inventory and optimize shelf space. Danfoss, a pioneer in energy-efficient solutions, is proud to announce the launch of its Universal TR6 Thermostatic Expansion Valve, an innovative product designed to optimize performance across a wide range of refrigerants. Engineered for legacy R-410A systems, as well as low-GWP refrigerants like R-454B and R-32, the Universal TR6 offers HVAC wholesalers and contractors a versatile, future-proof solution that ensures efficiency, reliability, and ease of installation. New light commercial installations Universal TR6 valve is perfect for a variety of applications, from residential retrofits to retail facilities The Universal TR6 valve is perfect for a variety of applications, from residential retrofits to new light commercial installations. Its advanced design allows for seamless compatibility with multiple refrigerants, enabling contractors and service technicians to streamline inventory and simplify installations without compromising on performance. A technologically advanced enhancement of the existing TR6 product line, the Universal TR6 comes in a kit consisting of a valve, bulb strap, insulation tape, installation guide, and three connectors: chatleff, aeroquip, and flare. Key features Key Features of the Danfoss Universal TR6 Thermostatic Expansion Valve: Universal Refrigerant Compatibility: Works with R-410A, R-454B, and R-32, making it the ideal choice for both existing systems and future-proof installations. Enhanced Energy Efficiency: Contributes to long-term cost savings by optimizing refrigerant flow, reducing wear on components, and increasing system lifespan. Reduced Downtime Risk, saving maintenance costs. Simplified Inventory Management: With one valve for multiple refrigerants, HVAC professionals can reduce complexity and improve inventory management, helping to save time and costs on job sites. Needs of the modern HVAC industry Universal TR6 is designed to meet the needs of the modern HVAC industry, offering zero compromises The Universal TR6 is designed to meet the needs of the modern HVAC industry, offering zero compromises between performance, adaptability, and sustainability. As refrigerant regulations continue to evolve, this truly universal valve offers a solution that’s both adaptable to legacy and current industry standards. Refrigerant transitions “We’re excited to introduce the Universal TR6 to the market,” said Ignacio Termenon, Head of Sales Development at Danfoss. “This valve is a game-changer for the HVAC industry, offering an all-in-one solution that simplifies refrigerant transitions and enhances system efficiency, all while helping to meet sustainability goals.” The Danfoss Universal TR6 is available now for order.

The HVAC/R industry is in the process of a major shift as A2L refrigerants become the standard in residential and commercial system HVAC. This change is being propelled by stricter environmental policy and advancements in refrigeration technology. However, the transition is not without its hurdles, posing new considerations for system owners, technicians, and equipment manufacturers. Favor of GWP alternatives The Environmental Protection Agency (EPA) has established clear guidelines to phase out hydrofluorocarbons (HFCs) in favor of lower global warming potential (GWP) alternatives.  The 700 GWP limit imposed by the EPA, forced manufacturers away from non-flammable A1 to mildly flammable A2L refrigerants for comfort cooling chillers and air-to-air unitary equipment. R-410A split systems  Under current regulations, R-410A split systems can still be installed until January 1, 2026 Under current regulations, R-410A split systems can still be installed until January 1, 2026, but manufacturers had to halt production of R-410A-based equipment by January 1, 2025.  As for packaged systems, which are fully assembled and sealed at the factory, sales will remain permitted until January 1, 2028, but only for equipment manufactured before 2025. Adaptation of A2L refrigerants These regulatory milestones mark a significant step toward a new era in HVAC/R technology, emphasizing sustainability and compliance with modern environmental standards. While the transition is underway in our market as we speak, there are some key factors that play into the adaptation of A2L refrigerants. How we implement, gain familiarity, and roll out these systems provides challenges.  System Design Modifications ASHRAE Standard 15 first added these requirements in its published version of 2019 ANSI/ASHRAE Standard 15 is widely recognized as the preeminent guide for the safe use of refrigeration equipment, as evidenced by its inclusion in building codes at the state and local level. ASHRAE Standard 15 first added these requirements in its published version of 2019. For high-probability systems, in which the basic design or the location of components is such that a leakage of refrigerant from a failed connection, seal, or component could enter the occupied space, these requirements underwent major revisions for the 2022 version, with intent to better harmonize with the requirements in UL 60335-2-40. Modifications in HVAC system design The transition to A2L refrigerants necessitates modifications in HVAC system design to ensure compatibility and safety. One significant consideration is component compatibility; all system components, including compressors, heat exchangers, and expansion devices, must be rated for A2L refrigerants to ensure optimal performance and safety.  Failure to use appropriate components could lead to operational inefficiencies or increased safety risks. Component Testing/Approval Requirements UL 60335-2-34 is a safety standard that applies to motor-compressors used in refrigeration systems UL 60335-2-34 is a safety standard that applies to motor-compressors used in refrigeration and air-conditioning systems. The UL 60335-2-34 6th edition was established in 2017 as the safety standard for compressors, introducing several key updates. One major change is the requirement for a new Maximum Rated Current marking, ensuring clear identification of electrical ratings. Additionally, the standard introduces various new testing methods for motors and their protective mechanisms to enhance safety and reliability.  Testing methods outlined in UL 207 UL207 covers “Refrigerant-Containing Components and Accessories, Nonelectrical” which are components Danfoss refers to as “line components”, such as filter driers, expansion valves and pressure regulating valves.  The testing methods outlined in UL 207 include burst pressure tests, fatigue tests, and hydrostatic tests to verify nonelectrical refrigerant-containing components and accessories. UL 207, which remains a referenced standard under UL 60335-2-40, has been reapproved for use with R-454B. Dealing with A2L refrigerants Compliance can be achieved through burst testing at five times the maximum pressure rating Unlike A1 refrigerants, where leaks at gaskets or mechanical seals were not a concern at twice the maximum pressure, such leaks now pose a significant issue when dealing with A2L refrigerants.  Compliance can be achieved through burst testing at five times the maximum pressure rating or by conducting a fatigue test at three times the maximum pressure rating without the product bursting or leaking from any mechanical connection. Implementation: Choosing a Solution Understanding what makes sense for your sector of the market for this transition is paramount in how OEMs will implement (and many already have) A2Ls into the next generation of equipment. Let’s zoom in and look at the HVAC segment related to commercial A/C units. The two main A2L refrigerants that were approved via SNAP rule 26, being used to replace R-410A in the 2025 transition requirement, are R-32 and R-454B. These two offer different approaches to the design requirements needed to be implemented. R-454B Danfoss has a selection tool called Cool Selector® 2 that is free to download online While no refrigerant is a direct replacement for R-410A, R-454B which has a GWP of 466, is considered a relatively close “drop in” solution. As such, most major components of the system, such as compressors and heat exchangers, can usually stay the same size. This is the lowest GWP solution available in the “high-pressure” range. With that being said, R-454B operates at lower pressures than R-410A, it also operates at lower mass flows than R-410A. This can leave your current liquid line, liquid line solenoid, expansion device slightly oversized. It is considered good practice to verify the sizing of these existing components when introducing R454B. Danfoss has a selection tool called Cool Selector® 2 that is free to download online. This can help you in verifying Danfoss components.  R-32 If the transition to A2L refrigerants is going to coincide with a major redesign of that unit, then R-32 (GWP 677) may be an option for your transition. R-32 will work at overall higher operating pressures and provide a significant increase in capacity vs R-410A. But with this comes the reality that most components in the system, possibly including piping sizes, will need to be changed to better suit the use of R32. R32 as a refrigerant, will also generate higher discharge temperatures than systems running with R-410A, creating a problem that manufacturers will need to account for in low ambient heat pumps and high condensing temperature environments. Leak Detection and Mitigation Refrigerant leak detectors must be installed in every unit with individual circuits charged with 4lbs As A2Ls pose a higher flammability risk, effective leak detection and mitigation strategies are essential for maintaining safety in environments where A2L refrigerants are used. Refrigerant leak detectors must be installed in every unit with individual circuits charged with 4lbs of A2L refrigerant or more.  More details on charge limits for systems and what mitigations requirements are needed can be found in UL60335-2-40 Annex GG. These detection systems enable quick identification and response to refrigerant leaks, reducing the potential for accidents or equipment damage. Danfoss leak detectors use thermal conductivity technology, were among the first to be UL-approved a year ago and come in a variety of configurations for HVAC/R equipment manufacturers. Proper mitigation strategies Proper mitigation strategies are crucial for preventing refrigerant accumulation in case of leaks. They must be tied into the unit control scheme. Disengaging any heating elements eliminates the possibility of ignition sources. Engaging evaporator fans increases circulation, ensuring that any leaked refrigerant is quickly dispersed, minimizing the likelihood of hazardous concentrations forming. In addition, per UL60335-2-40, service and maintenance procedures must incorporate regular leak inspections as a standard practice. Refer to ASHRAE 15 or UL60335-2-40 for further readings and requirements. Service and Familiarity Technicians must gain a version of the parts of A2L refrigerants and are required to pass an A2L test While manufacturers focus on design changes to accommodate the A2L transition, industry members who will install and service units also must adjust to the changing landscape of refrigerant. Technicians must gain an understanding of the characteristics of A2L refrigerants and are required to pass an A2L certification test under EPA Section 608.  Looking Forward This phase of transition is better conceptualized as a mid-term solution. The American Innovation and Manufacturing (AIM) Act was passed in 2020. This directed the EPA to address hydrofluorocarbons (HFCs) and phase down production and consumption of HFCs by 85% by 2036. It is likely in the future, we will see another step in transitions to ultra-low GWP Refrigerants such as R-290 (A3 class), R-1234ze, or R-515B. Before the AIM Act, individual states like California were looking to regulate their own refrigerant marketplaces. As adoption of new EPA regulations might be slowed under the current U.S. administration, it is uncertain if any future deregulation by the federal government could lead to some states restarting their own regulation programs. But as we stand now, lower GWP A2L refrigerants still continue to grow in the marketplace.

Until a couple of years ago, most of the talk about heat pumps occurred around this time of year, when more than half the planet prepares for an autumn cooldown. These discussions were typically limited to regions that only experienced moderate winters. But as anyone who has recently perused an HVACR trade magazine or website—or participated in an industry webinar, event, or social media conversation—can tell you, the topic of heat pumps is virtually unavoidable. Not only do heat pump discussions now occur year-round, but they’ve also ascended to consistent headline status and transcended the traditional boundaries of moderate climates.  The decarbonization megatrend One might say heat pumps have taken their place on the global stage. If you’re asking why this has happened, the answer requires just three words: the decarbonization megatrend. However, for industry professionals looking to grow their businesses, it’s helpful to gain a deeper understanding of heat pumps—how they work, ways they are currently meeting HVACR needs, and where the technology is headed for next-generation applications. Through this understanding, members of the industry can better forecast customer needs as well as identify opportunities for expanding in both current markets and, potentially, new ones. How heat pumps work—don’t let the name fool you The heat released as the refrigerant condenses is then transferred to interior spaces What heat pumps do and, more specifically, how they do it provides the key as to why they are now being considered a “hero” of decarbonization. The term can be misleading, because “heat pumps” do not generate heat. Because of this, heat pumps are being more widely embraced as the lower-carbon-emission alternative to combustion-based heating technology that uses, for example, fossil fuels.  Instead of creating heat, heat pumps extract heat energy from where it’s not needed and move it to where it is needed. When a heat pump is in heating mode, its refrigerant evaporates as it absorbs heat from the outside. The heat released as the refrigerant condenses is then transferred to interior spaces. In warmer weather, a heat pump kicks into cooling mode and the process is reversed, as heat is extracted inside and released outside. This non-combustion process of moving heat from one place to another provides several potential benefits to society: Heat pumps support the megatrend toward decarbonization. They replace fossil-fuel heating with high-efficiency technology. They can be paired with lower-global-warming-potential (GWP) A2L refrigerants—such as R-454B and R-32—to further increase environmental benefits, while offering similar performance to the legacy R-410A. They offer the ability to tap into alternative energy sources, such as industrial waste heat as well as heat sourced from the air (ambient), ground (geothermal), or lakes/ponds (water). Meeting today’s needs—these aren’t your grandfather’s heat pumps Heat pump technology has been commercially available and in use since the 1950s. Early versions of heat pumps were essentially reversible air conditioning units, and most used traditional refrigerants—like R-22 and, more recently, R-410A. These units performed well and operated safely using lower-toxicity, nonflammable (A1) refrigerants. However, they were known to sometimes struggle at lower ambient temperatures. As often happens in the world of science and technology, challenges drive the search for solutions. Today, we’re seeing innovations that result in efficient, effective cold-climate heat pumps that optimize various components, such as compressors, heat exchangers, expansion valves, and their controls. Thanks to these innovations and others, the U.S. and other countries are experiencing broader heat pump adoption and, in turn, supporting progress toward decarbonization.  Heat pump technology has been commercially available. Increasing heat pump accessibility and viability in more places and spaces is also critical to the HVACR industry’s commitments to the environment—and its need to heed regulations advancing the transition to systems reducing climate impact. Emerging systems use mildly flammable (A2L) refrigerants. They are similar in design to legacy systems and include modifications to mitigate risks associated with the change to A2Ls. Where things are headed—heat pump technology is just getting started Even with the significant advances we’ve seen in colder-climate heat pumps, there is still untapped potential in terms of what the technology can achieve. We can expect to see continued innovation as end-user needs and environmental priorities continue to evolve. Some foreseeable growth areas for heat pumps include: Traditional applications—that is, moderate climates Expansion into nontraditional climates—heating in very cold climates and cooling in hotter regions Domestic water heating, replacing fossil-fuel systems Leveraging a variety of heat sources—geothermal, air-sourced, and water-sourced Harnessing waste heat generated by energy-intensive industrial processes Use of lower-GWP A2L refrigerants System optimization will also drive greater use of lower-GWP A2L refrigerants, such as R-454B Supporting these growth areas will be innovations that optimize high-performance, high-efficiency delivery of extracted heat, using a combination of traditional and new split-ducted, ductless/mini-split, and mono-block technologies. System optimization will also drive greater use of lower-GWP A2L refrigerants, such as R-454B, while limiting the use of highly flammable refrigerants such as R-290. Refrigerant selection will also play an increasingly important role and may offer additional opportunities for application-specific technology. As heat pump applications expand, we can expect to see greater focus on selecting the optimum refrigerant to use as the working fluid. Criteria will weigh system design, operating conditions, and other priorities against key refrigerant properties: Physical—boiling point, vapor pressure, density, and material compatibility Thermodynamic—cooling/heat capacity, energy efficiency, pressure-enthalpy (PH) curves Environmental—ozone depletion potential (ODP) and global warming potential (GWP) Safety and health—flammability and toxicity Conclusion: There’s strong and ample reason to “stay pumped” Over the past several years, members of the HVACR industry have enthusiastically embraced new heat pump solutions. Evolving heat pump technology and expanding applications will continue as the industry progresses along the path of more energy-efficient, lower-GWP, and more sustainable new-generation and next-generation heating and cooling. This, coupled engineering and science that leverages untapped heat pump potential, will mean more opportunities for HVACR contractors to deliver new options to the markets they serve. With a strong understanding of their customers’ individual heating and cooling needs, climate challenges, and sustainability goals, contractors can confidently select the best heat-pump refrigerant solution.

By now, most of the HVACR industry is familiar with the HFC phasedown portion of the U.S. EPA American Innovation and Manufacturing (AIM) Act that was signed in 2020 and finalized in 2021. The first phasedowns started Jan. 1, 2020, with a 10% reduction in HFC refrigerant production, importation, and consumption, and was followed by an additional 30% reduction that began Jan. 1, 2024. As these regulations work to achieve a total 85% HFC phasedown from historic baseline levels by 2036, Technology transition rules will start to impact the industry as early as Jan. 1, 2025. Technology Transitions Often referred to as “sector controls,” Technology Transitions are the second of three main sections of the AIM Act. They focus on limiting the use of HFC refrigerants and supporting A2L adoption by calling for global warming potential (GWP) limits for refrigerants based on specific applications, including refrigeration, air conditioning, heat pumps, and more.  three new-generation refrigerants Three new-generation refrigerants help create a clear path to making refrigerant transitions that comply with the rules Although the Technology Transitions program is rather complex (providing rules for which refrigerants or GWP limits apply for which applications and when) focusing on just three new-generation refrigerants helps create a clear path to making refrigerant transitions that comply with the rules and support more sustainable operations. While several new refrigerants have been developed recently, many of the HVACR industry’s applications and equipment can be covered by focusing on these three refrigerants: R-454A, R-454B, and R-454C.   R-454A (AR4 GWP = 239)   Developed to replace legacy refrigerants such as R-404A, R-454A is an HFO blend offering zero ozone depletion potential (ODP) and a GWP of 239, lower than R-404A’s GWP of 3,920. R-454A is classified as a mildly flammable, low-toxicity A2L, suitable for low- and medium-temperature commercial refrigeration applications. The AIM Act Technology Transitions set a maximum GWP of 300 for several types of systems with charge limits up to 200 lbs., such as remote condensing units for food retail walk-ins and cascade systems. These systems are ideal for R-454A, given the refrigerant’s improved performance and reduced GWP compared with R-404A.  R-454B (AR4 GWP = 467)  Regarding refrigerants of the future at work today, R-454B is likely the one you’ve heard the most about. Establishing itself as the predominant replacement for R-410A in new air conditioners and chillers, R-454B started being used earlier this year. R-454B will be used in most equipment manufactured after Dec. 31, 2024. Offering a GWP of 467 compared with R-410A’s GWP of 2,088 (a 78% reduction), R-454B has been selected by most air conditioning and heat pump manufacturers worldwide.   R-454C (AR4 GWP = 148)  R-454C, with a GWP of 148, offers compliance with AIM Act regulations and is suitable for new systems R-454C, with a GWP of 148, offers compliance with AIM Act regulations and is suitable for new systems in applications requiring a GWP of <150. Two examples are small standalone units and larger system architectures with a charge size of >200 lbs. being developed for supermarkets.   For Use in New Equipment Only  R-454A, R-454B, and R-454C are HFO-blend refrigerants and have slightly different R-32 and R-1234yf components percentages. All three are individually optimized for peak performance and carry an A2L mild flammability safety classification. As A2Ls, these refrigerants can only be used in new equipment designed to mitigate leaks and flammability risks and must be installed according to OEM instructions and in compliance with applicable safety standards and building codes.  Easy as A, B, C  In anticipation of AIM Act regulations and the continued adoption of R-454A, R-454B, and R-454C, the HVACR industry has ramped up A2L training and engineering support significantly over the past few years. So, while sorting through the regulatory changes and becoming familiar with the new refrigerant options may seem complex, focusing on these three A2Ls will hopefully make your refrigeration transition, and your business’s future growth as easy as A, B, C.  

The HVAC Industry gathered in Orlando for AHR Expo 2025, focusing on the latest advancements in technology. Attendees included contractors, manufacturers, engineers, system design professionals, facility managers, architects, wholesalers, and distributors. This year’s expo highlighted game-changing innovations, regulatory shifts, and emerging trends designed to enhance efficiency, sustainability, and connectivity. For HVAC professionals, these developments translate into practical solutions that improve system performance, optimize energy use, and simplify compliance with evolving industry standards. The Next Phase of Refrigerant Transition The transition to A2L refrigerants is a dominant theme at this year’s expo, with major players such as Arkema, Chemours, LG Electronics, Rheem, Daikin, and others showcasing the latest refrigerants and equipment solutions. Following the deadline of Jan. 1, 2025, the shift from R-410A to R-32 and R-454B is well underway, with 80% of manufacturers opting for R-454B. While concerns about flammability persist, experts emphasize that proper training and system design can mitigate risks. LG Electronics' full product line Some OEMs opted for R-454B as an option that is closer to a “drop-in” solution Some OEMs opted for R-454B as an option that is closer to a “drop-in” solution. Daikin was among the manufacturers to go all-in on R-32, which required a complete redesign of product components, ultimately pioneering to more efficient, cost-effective systems, according to the company. LG Electronics' full product line now uses R-32 refrigerant, and they started shipping products in December. All R-410A equipment will be gone by the end of Q1. variety of products on R-454B refrigerant Rheem announced their 100-year anniversary, and a new tagline, "Engineered for Life." They say the trend is toward side-discharge heat pumps, although the industry needs a mix of both. They had a variety of products on display that use R-454B refrigerant.  Attendees at AHR Expo 2025 came away with an understanding that refrigerant regulations and selecting compatible equipment will be crucial for ensuring smooth transitions in commercial and residential applications. Intelligent Building Automation and Controls Smart HVAC technology is revolutionizing building control, with AI-driven automation Smart HVAC technology is revolutionizing building management, with AI-driven automation, IoT connectivity, and remote monitoring taking center stage. Companies like Distech Controls and Schneider Electric are introducing IP-based controllers that integrate seamlessly with existing building management systems. Belimo’s intelligent butterfly valve and Delta’s Node-RED Programming with built-in Python support, among other products, are making automation more powerful and user-friendly. Copeland’s Sensi Touch 2 smart thermostat Copeland’s Sensi Touch 2 smart thermostat and Sensi equipment interface module (EIM) can eliminate the need to pull additional wires during installation. The system is weatherproof, indoor, or outdoor, and communicates using radio frequency (RF). AHR Expo 2025 made a strong case that investing in smart controls will improve operational efficiency, reduce downtime, and enable predictive maintenance. Hydronic Systems for Data Center Cooling One major player is Bell & Gossett/Xylem, whose hydronic cooling systems target data center market The rise of data center cooling solutions was another recurring theme at AHR. One prominent player is Bell & Gossett/Xylem, whose hydronic cooling systems target the data center market. The company’s e-1531X and e-1532X smart pumps offer enhanced energy efficiency and a larger "efficiency island." These systems are designed to meet the growing demand for sustainable data center cooling, providing a net-zero roadmap. As data center energy consumption rises, hydronic solutions offer a scalable, efficient approach to thermal management. Heat Pumps Expand Capabilities and Market Reach Heat pumps continue to dominate as a top energy-efficient alternative for commercial and residential applications. Companies such as Danfoss, Mitsubishi, and Samsung are pushing the boundaries with heat pumps that operate in extreme temperatures. Danfoss is progressing forward related to four application areas at AHR 2025--heat pumps, data centers, RTU/DOAS, and retail/refrigeration. Emphasis is on lower emissions and better energy efficiency. Midea drew a lot of attention at AHR 2025, including modular air handler Midea drew a lot of attention at AHR 2025, including their modular air handler – the  EVOX G³ – that breaks down into three pieces for easy movement and installation in any of six configurations. They are also opening showrooms throughout the country so consumers and contractors can see and touch the products. Integration with renewable energy sources Johnson Controls-Hitachi mini-splits have a self-cleaning feature called FrostWash Johnson Controls-Hitachi Air Conditioning’s Hitachi mini-splits have a self-cleaning feature called "FrostWash;" they intentionally build a frost layer on the coil so the fine particulates can be captured and then melted away, thus avoiding mold and other contaminants. It can be used in lieu of UV light, which damages plastics. The heat pump market is growing rapidly, and advancements in low-temperature performance and integration with renewable energy sources will drive adoption. The Drive Toward Sustainability Sustainability is a recurring theme at the expo, with manufacturers prioritizing energy-efficient equipment, smart automation, and low-GWP refrigerants. Companies like Lennox, and Rheem are launching highly efficient packaged rooftop units and unitary heat pump systems. Grundfos’s distributed pumping technology and Ziehl-Abegg’s ZAcore intelligent control platform further demonstrate the industry's push toward lower energy consumption and minimal environmental impact. Investing in sustainable HVAC technologies Availability is paramount, and they are opening a new factory in Mexico Lennox is serving the "emergency replacement" market for HVAC equipment with their Xion line. Availability is paramount, and they are opening a new factory in Mexico. Telling the "story" of humidification at AHR 2025, Condair has products for any vertical. They say more education and awareness are needed on the value of humidification. As regulations tighten and demand for green building solutions rises, investing in sustainable HVAC technologies will be critical for long-term success. Smarter, Cleaner, and More Efficient AHR Expo 2025 underscores the industry's shift toward smarter, cleaner, and more efficient HVAC solutions. Whether it’s refrigerant transitions, intelligent automation, or advanced heat pump technology, staying ahead of these trends will help HVAC professionals deliver superior performance while meeting regulatory requirements. The innovations showcased in Orlando set the stage for a future where HVAC systems are not only more efficient and environmentally friendly but also easier to manage and integrate into modern buildings.

Integrating technology, data, and a nationwide network of contractors and distribution centers, Motili seeks to transform how HVAC services are delivered. With a focus on sustainability, energy efficiency, and cost savings, Motili helps property owners and contractors achieve their goals while promoting a greener future for the HVAC industry.  motili expansion Motili meets various industry needs, whether a property manager looking for streamlined HVAC solutions or a contractor seeking more jobs.  Motili started in upstate New York as One-HVAC, a marketing call center connecting contractors with homeowners. Born after the housing market crash in 2008, Motili expanded nationwide; in 2015, the headquarters moved to Denver, Colorado.   energy-efficient technologies Motili is equipped to provide high-quality, eco-friendly equipment and services Motili was acquired by Daikin in 2017 and supports some of the largest national accounts with HVAC services across industries such as single-family, commercial, military, and big-box retail. With the growing demand for sustainable, energy-efficient technologies, Motili is equipped to provide high-quality, eco-friendly equipment and services.   Growing HVAC businesses “We help HVAC contractors grow their business and keep their crews active,” says Matthew Sallee, Motili’s VP of National Accounts, and Marketing. “By providing them with sold jobs from our customers, we eliminate the need for bidding and costly marketing or advertising. We even offer job opportunities during the shoulder season to keep crews working year-round.”  advanced technology platform The advanced technology platform enables tracking of HVAC system details such as age, condition, and efficiency. Proactively, Motili can help customers identify potential system failures through preventative maintenance and planned replacement projects across portfolios, thus reducing costly downtime and extending equipment lifespan.   Reactively, the platform assists with unplanned repairs and replacements by dispatching jobs to a network of HVAC contractors, who receive job notifications via a mobile app. They also help customers select the best equipment for their needs, ensuring they get the most energy-efficient, reliable, and cost-effective system possible.  Customer benefits Customers benefit from seamless HVAC solutions, covering everything from unexpected repairs and replacements Motili connects property management customers across the country with a network of contractors who install high-efficiency equipment from Goodman and Daikin, powered by Motili’s technology platform. Customers benefit from seamless HVAC solutions, covering everything from unexpected repairs and replacements to large-scale projects with installations tailored to meet the needs of their entire portfolio.   preventative maintenance “We help manage nationwide portfolios with a focus on preventative maintenance and sustainable products, ensuring consistent comfort for tenants and cost savings for property owners,” says Sallee.  Data is crucial for property owners and managers to make informed decisions about HVAC systems. Motili enables property owners to leverage system data for proactive maintenance and capital planning.  key metrics “By aggregating and analyzing key metrics like system age, efficiency, and performance, we help property owners and managers identify inefficiencies and plan cost-effective solutions,” says Sallee. This allows them to prioritize investments and plan maintenance schedules with confidence, leading to improved system performance, reduced operational costs, and better long-term management of their HVAC assets.  job flexibility Contractors can optimize their schedules, keep their teams active year-round, and expand their business HVAC contractors can grow their business by partnering with Motili, gaining access to sold jobs they would not typically reach. With the mobile app, contractors benefit from a steady stream of jobs, removing the need for bidding and costly marketing efforts. With quick payments and the flexibility to choose jobs, contractors can optimize their schedules, keep their teams active year-round, and expand their business without the inefficiencies of traditional lead generation methods.   HVAC efficiency goals Leveraging technology, Motili seeks to help customers achieve their HVAC efficiency goals while reducing costs. Several key technologies industrywide are advancing the HVAC industry toward net zero: inverter technology, heat pumps, and low-GWP refrigerants. Daikin’s energy-saving inverter technology minimizes energy fluctuations, delivering consistent comfort and lower energy bills. When paired with a modern heat pump, this system provides efficient, year-round comfort using minimal electricity, transferring heat rather than generating it without burning fossil fuels.  R-32 refrigerant Finally, R-32 refrigerant has a low environmental impact. Compared to the refrigerants widely used such as R-22 and R-410A, R-32 has a global warming potential (GWP) that is one-third lower. Together, these innovations create cost-effective, reliable, and energy-efficient systems.

SNAP Rule 26 marks an important milestone in the transition from commercial refrigeration to new refrigerants. The rule lists refrigerant substitutes that provide a spectrum of technological solutions to meet required performance, global warming potential (GWP), safety, and environmental standards.  SNAP stands for Significant New Alternatives Policy, a program by the U.S. EPA (Environmental Protection Agency) under the Clean Air Act. In general, the program aims to evaluate and regulate substitutes for ozone-depleting substances, considering their overall risks to both human health and the environment. Impact of SNAP Rule 26 Final SNAP Rule 26, Protection of Stratospheric Ozone, lists acceptable substitutes in commercial and industrial refrigeration. SNAP Rule 26 will be effective July 15, 2024. The incorporation by reference of certain material listed in the rule is approved by the Director of the Federal Register as of July 15, 2024. The incorporation by reference of certain material listed in the rule is approved by the Director of the Federal Register “To date, the SNAP program has provided a very effective framework for evaluation and approval in support of innovation and the transition to new technology,” says Andrew Pansulla, Technical Service Engineer, The Chemours Company, a global chemistry company that provides a range of refrigerant products. We asked Pansulla to elaborate further on the impact of SNAP Rule 26 and what lies ahead. Q: How will the Rule’s finalization impact various commercial refrigeration sectors? Pansulla: The rule’s finalization will impact commercial refrigeration in several ways. Areas, where impact will likely be seen, include providing more acceptable refrigerant options, adherence to updated standards, new equipment design standards, and the exemption of propane from the venting prohibition for refrigerated food processing and dispensing equipment. These impacts could trigger changes in operational, manufacturing, and environmental compliance strategies in the commercial refrigeration sectors. SNAP Rule 26 will enable the adoption of the listed substitutes, including Chemours Opteon™ refrigerants, with global warming potential (GWP) lower than existing refrigerants. This rule does not require any changes to existing equipment and will impact only new equipment that uses the specific substances referenced in the SNAP rule. Q: What is the outlook for additional requirements for safe handling and use of alternative refrigerants? What specific safety standards are expected or appropriate? Pansulla: As part of the comparative risk framework used by the EPA to assess new alternatives, the EPA considers and implements use conditions that will ensure the safe use of products. These use conditions rely upon existing safety standards (e.g., UL and ASHRAE) which are available at the time the rule is finalized. In the case of SNAP Rule 26, many of the use conditions require adherence to UL 60335-2-89 and ASHRAE-15-2022. These standards are reviewed and updated periodically to maintain relevance with the products subject to the standards. Q: What are any limitations of the use of A2L refrigerants under SNAP Rule 26? Pansulla: There are two main categories of limitations under SNAP Rule 26. The first, as mentioned above, is the adherence to specific safety standards that apply to refrigerants that are designated as mildly flammable (A2L). The second is based on the GWP of the refrigerant. In the case of the A2L refrigerants subject to SNAP Rule 26, the EPA imposed conditions on the type of equipment and specific circumstances in which the substitute may be used. For example, the EPA is permitting the use of R-454A in supermarket systems, but only on the high side of a cascade system, or when the refrigerant charge capacity is less than 200 pounds. Q: Which new-generation A2L refrigerants are fit for which commercial refrigeration applications? Pansulla: Under SNAP Rule 26, the EPA deems R-1234yf, R-1234ze(E), R-454C, R-455A, R-457A, and R-516A as acceptable subject-to-use conditions for various commercial refrigeration applications. This selection is primarily driven by these refrigerants having GWPs under 150. However, certain applications necessitate refrigerants with higher GWPs due to unique performance characteristics. For example, R-454B and R-32 were listed for industrial process refrigeration with exiting fluid temperatures below minus 30 degree Celsius because these two specific refrigerants have lower boiling points than the other six less-than-150-GWP alternatives. However, it is critically important to consider the additional use conditions when designing equipment with refrigerants that have a GWP greater than 150. Q: So various equipment needs different refrigerants? Pansulla: The EPA purposefully lists several different refrigerants in each application to allow for equipment manufacturers to consider a variety of different factors that go into refrigerant selection, such as energy efficiency, capacity, normal boiling point, temperature glide, cost, safety, and use conditions. There is no one-size-fits-all solution for the entire commercial refrigeration industry. Q: How can commercial refrigeration businesses achieve a smooth transition to A2Ls? Pansulla: Keys to a smooth transition to A2Ls include understanding what refrigerants the EPA has approved as acceptable substitutes under the SNAP program, the sector-based GWP limits imposed by the Technology Transitions Program under the American Innovation and Manufacturing (AIM) Act, and which refrigerants provide the best combination of technical performance and environmental characteristics. Many resources are available to navigate the regulatory landscape and select the best low-GWP refrigerants to meet the needs of this industry. Working with companies like Chemours, who has nearly a century of refrigerant innovation and experience, is a great first step in the transition process. Q: What is the “staying power” of A2Ls — based on their chemistry, sustainability, and other attributes, combined with regulations such as SNAP Rule 26? Pansulla: The identification, selection, and development of new refrigerants that deliver required performance while meeting increasingly stringent environmental standards is a challenging process. With the identification of certain hydrofluoroolefin-based (HFO) refrigerants as an alternative to meet these criteria came a new safety classification. These HFO-based refrigerants are classified as A2Ls. While slightly more flammable than existing hydrofluorocarbon-base (HFC) refrigerants, HFOs are much less flammable than hydrocarbons, which are classified as A3 (two categories higher on the ASHRAE flammability spectrum). Moreover, such refrigerants offer an excellent alternative to substances with higher toxicity, such as R-717. The listing of A2L refrigerants in SNAP Rule 26 clearly indicates that such refrigerants can be used safely in commercial refrigeration as well as many other applications, which are subject to the SNAP Program, when adhering to the applicable safety standards.

When they are one of the largest beverage distributors in the U.S., it’s crucial to stay ahead of the curve on everything that drives customer satisfaction, corporate responsibility, and a strong bottom line. Hensley Beverage Company did exactly that when it collaborated with Chemours and American Refrigeration Supplies, Inc. (ARS) to implement a system utilizing a new-generation A2L refrigerant, Chemours Opteon™ XL20 (R-454C). Completed in 2023, the installation paves the way for companies throughout the commercial refrigeration industry to embrace refrigerant technologies that are both cost-effective and environmentally sustainable. Situation The company recently ended an acquisition that grew its distribution footprint into New Mexico Hensley Beverage, a Phoenix-based beverage wholesaler, supports a customer base of more than 9,000 accounts and more than 2,500 individual products, operating out of six locations across Arizona.  The company recently completed an acquisition that expanded its distribution footprint into New Mexico, making it one of the largest family-owned and operated beverage distributors in the nation. As it grows, Hensley remains committed to maintaining exceptional product integrity, upholding its multi-generational family business legacy, and supporting a variety of environmental objectives. These factors, coupled with the current regulatory landscape (notably, the phasedown of legacy hydrofluorocarbon (HFC) refrigerants), have put Hensley’s focus on ways to upgrade its refrigeration systems. Phasedown of HFC refrigerants For the past several years, Chemours, ARS, and Hensley have worked together to retrofit the distributor’s existing R-22 and R-404A systems to Opteon™ XP40 (R-449A), a hydrofluoroolefin (HFO) blend offering zero ozone depletion potential (ODP) and a significantly lower global warming potential (GWP) than legacy products. However, with the ongoing phasedown of HFC refrigerants under the U.S. EPA’s American Innovation and Manufacturing Act (AIM), the teams began weighing the benefits of an even bolder upgrade. “Hensley Beverage is proud to partner with Chemours, TBSI, and ARS to help develop innovative solutions and responsible business practices that drive sustainability in our community. These groundbreaking results are a culmination of partnership and collaboration. It is refreshing to work with three organizations that are this passionate about developing pioneering products that will help shape a better future for the communities we serve,” Alex Dunn SVP of Operations, Hensley Beverage.  Solution Chemours recommended bringing Opteon™ XL20 (R-454C) into Hensley’s refrigeration plan Even as Chemours, ARS, and Hensley continued to strategically employ retrofit solutions in some areas, they explored options that would put the company in a stronger position for the long term. Chemours recommended bringing Opteon™ XL20 (R-454C) into Hensley’s refrigeration plan. A mildly flammable refrigerant with an ASHRAE A2L safety classification, Opteon™ XL20 is designed for use in new equipment, so Hensley identified an old R-22 system near the end of its life that was ideal for replacement by a new system using Opteon™.  Opteon™ XL20 has been used for several years in Europe and is expected to become the new norm in the U.S. by 2026, based on the current direction provided by the EPA. Leveraging its experience in Europe, the Chemours team of technical service and business development resources is prepared to support end users as they consider trial installations using A2L refrigerants. Features of Opteon™ XL20 Opteon™ XL20—the future of sustainable low- and medium-temperature refrigeration GWP of 148 (a 96% reduction versus R-404A)  Zero ODP Enables much higher charge sizes than highly flammable A3 refrigerants Is a close performance match to R-22 and R-404A Offers the optimum balance of performance and environmental sustainability Provides an easy, cost-effective alternative to legacy refrigerants in new equipment applications Utilizes well-known technology for ease of service and maintenance Benefits of HFOs Hensley was an early adopter of Opteon™ XP40, retrofitting equipment to experience better “Hensley was an early adopter of Opteon™ XP40, retrofitting equipment to experience better environmental outcomes, as well as high performance in low- and medium-temperature applications. Experiencing these benefits of HFOs whet their appetite to ask, ‘What next?’ With a strong dedication to supporting their communities and the environment while operating an efficient and thriving business, Hensley is a company that pushes the envelope." "Chemours was ready with our next-generation Opteon™ XL20—that will ensure they achieve maximum performance, operating efficiency, and sustainability," Joe Martinko President, Thermal and Specialized Solutions, Chemours. New low GWP refrigerant  “Our industry is undergoing some of the most significant regulatory changes in history and will be for the foreseeable future. ARS was excited to work with Chemours and be a part of the launch at Hensley of the new low GWP refrigerant." "It’s been a privilege for ARS to help bring together such an excellent group of partners for this project—and to install a first-of-its-kind system right here in Tucson, a community we’ve proudly served since 1948,” John White President, American Refrigeration Supplies, Inc.  Opteon™ XL20 properties ASHRAE Number: R-454C Composition Weight%: R-32/R-1234yf 21.5/78.5 Molecular Weight: 90.8 g/mol Normal Boiling Point: -45.6 °C (-50.0 °F) Critical Pressure: 4318.9 kPa (626.4 psia) Critical Temperature: 85.7 °C (186.2 °F) Liquid Density at 21.1 °C (70 °F): 1058.2 kg/m³ (66.1 lb/ft³) Ozone Depletion Potential (CFC-11 = 1.0): 0 AR4 (AR5) GWP (CO₂ = 1.0): 148 (146) ASHRAE Safety Classification: A2L Temperature Glide: ~6 K (~10.8 R) LFL (UL 60335 2-89 WCF): 0.291 kg/m³ (0.018 lb/ft³). Collaboration and Installation The installation brought together additional resources from the HVACR industry, including Copeland and Heatcraft Refrigeration Products— two ARS manufacturing partners—as well as Technical Building Services, Inc. (TBSI), the local HVACR service provider. As HVACR technology providers helping customers achieve their sustainability, decarbonization, and regulatory compliance goals, Heatcraft and Copeland had the knowledge and experience of emerging A2L requirements and the capabilities to support the project. TBSI was selected as the contractor for installation and servicing.  Use of R-22 in other Hensley systems Installation, evacuation, and setting methods were very similar to the recent refrigerants With the team assembled, Chemours took the lead on the project, ensuring that the contractor, Hensley’s service personnel, and others involved were certified through the ESCO Institute’s A2L refrigerant training program, and answering any questions from the local authorities.  After safely recovering the R-22 for use in other Hensley systems, the team from TBSI started removing the existing Keg 6 equipment, hanging new evaporator coils, and running new refrigerant lines. Installation, evacuation, and charging procedures were very similar to the current refrigerants in use by industry, making for a time- and cost-efficient process. Next generation of climate technology “Copeland has always been focused on not just setting the standard in climate solutions with pioneering brands in compression, controls, software, and monitoring—but pioneering the evolution in this space. Our role in the system design and installation for Hensley was right in our wheelhouse. What we accomplished together demonstrates that by bringing together energy-efficient products, regulation-ready solutions, and expertise, we can revolutionize the next generation of climate technology for the better,” Brian Schroeder Engineering Manager, Refrigerants, Copeland.  “Our tools and gauges were already enabled for the R-454C refrigerant. The startup and charging of both systems went pretty smoothly. TBSI is proud to have participated in the project at Hensley and, by doing so, adding to the variety of equipment we’ve worked on since founding our business in 1990. This was a great opportunity to grow our experience with A2Ls,” Sergio Pelayo Vice President, TBSI.  Copeland monitoring data Copeland applied monitoring units to the systems that capture nearly two dozen data points every second To make sure the system performed as expected, Copeland applied monitoring units to the systems that capture nearly two dozen data points every second. The data has shown that the systems are running as designed.  “We are thrilled with the results of the R-454C project with Hensley Beverage. As we continue our journey toward new regulation compliance, this successful collaboration has been instrumental in leveraging Heatcraft’s new product design efforts, with A2L refrigerants being an important part of the mix. We are poised to lead the industry and provide more customers like Hensley with cutting-edge solutions that drive their success,” Bob Landi Vice President and General Manager, Heatcraft Refrigeration Products. Summary Influenced by upcoming regulatory changes and stronger organizational ESG commitments, the commercial refrigeration industry’s transition to lower GWP refrigerants is inevitable. Opteon™ refrigerants provide organizations with lower GWP options that can help extend the useful life of their systems, as well as new equipment options that enable decades of reliable operation. Moreover, these systems answer the consumer preference for businesses that utilize responsibly manufactured products and support a greener environment. Hensley’s approach demonstrates an ideal way for companies to meet the needs of refrigerating their products while following the guidelines of the HFC phasedown. It’s important to assess where your equipment is in its lifecycle and determine if it makes the most sense in terms of budget, performance needs, and corporate vision to (1) retrofit existing equipment for more efficient and sustainable operation or (2) replace it with A2L refrigerant technologies and products.

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.”

High-performance Toshiba heating and cooling equipment has been used in combination with a solar photovoltaic (PV) and battery storage system as part of a project to help future-proof a five-bedroom home in Cheshire. Toshiba Carrier UK Ltd (TCUK) is part of Carrier Global Corporation, the global provider of healthy, safe, sustainable, and intelligent building and cold chain solutions. Toshiba ESTIA air-to-water heat pumps Two 11kW Toshiba ESTIA air-to-water heat pumps operating on lower global warming potential (GWP) refrigerant R-32 were installed at the 5,500ft2 property, alongside two Toshiba MiNi VRF systems. The Toshiba solution replaced an inefficient heating system and is supported by a 16kW solar PV installation plus 11kW of battery storage and measures including triple-glazing. Energy-neutral outdoor and indoor units  Homeowner and renewables consultant - Dave Meseck says the property is “energy-neutral” during the summer months, with generated and stored energy offsetting electricity consumed from the grid.  One of the ESTIA systems serves around 90m2 of underfloor heating in the open-plan kitchen and dining area, while the other provides hot water and heats the upstairs radiators and towel rails from a supplied 300-liter cylinder. The ESTIA indoor units include a 3kW backup heater to ensure continuity of operation at extremely low ambient air temperatures. Toshiba Mini SMMSe VRF The 5hp system provides heating and cooling for the room above a triple garage via a 5.6kW four-way cassette A 6hp (15.5kW) Toshiba Mini SMMSe VRF is connected to ducted units in the bedrooms and two of the newly designed compact 3.6kW one-way cassettes downstairs, which have been designed to fit between the joists on a traditional home. The second 5hp (14kW) system provides heating and cooling for the room above a triple garage via a 5.6kW Toshiba four-way cassette, while the garage space below, where a spa area is planned, is served by two wall-mounted units. Efficiency “The whole system has been running since December last year and the way it has transformed the house is fantastic,’’ said David Meseck, a Specialist in renewables, sustainability, and the circular economy. He adds, “It was important to get everything right; the project was sized correctly and the equipment installed properly." Cost-effective all-electric heating system As well as helping to future-proof our home and reducing energy costs, the changes have added value to the property" David Meseck continues, "Together with the other measures, we now have an efficient, all-electric heating system with the added benefit of cooling in summer, and the annual servicing cost is comparable to boiler cover. As well as helping to future-proof our home and reducing energy costs, the changes have added value to the property." He adds, "I would urge anyone looking to invest in their home to look at the bigger picture and make it an environmentally-responsible investment.’’ Four models are available in the ESTIA range, spanning capacities from 4-11kW, all with reversible operation to provide cooling as well as heating if required. twin rotary compressor At the heart of ESTIA is Toshiba's award-winning twin rotary compressor, which contributes to the system's outstanding energy efficiency rating of A+++. The compressor enables the heat pump to continue supplying hot water even during exceptionally cold weather, delivering water at 62 degrees C when outdoor temperatures fall to -25 degrees C. ESTIA can also continue producing DHW at exceptionally high outdoor temperatures (43 degrees C) to deliver maximum running cost savings. all-in-one floor-standing hydro-module Toshiba offers a space-saving wall-mounted hydro-module for boiler replacement projects such as this, with a choice of 150l, 200l, or 300l capacity external cylinders. For new-build projects, an all-in-one floor-standing hydro-module with an integrated 210l tank provides a compact solution for both heating and DHW storage. Easy-to-install ESTIA provides a superb solution for homeowners or small businesses looking to replace less efficient systems" “ESTIA provides a superb solution for homeowners or small businesses looking to replace less efficient systems," said David McSherry, David McSherry, Head of Sales for Toshiba Air Conditioning UK, Carrier Global Comfort Solutions Europe. “It is quick and easy to install on-site, and Toshiba’s renowned reliability means a long working life, backed by our excellent warranty.” Performance, warranty, and reliability Installer - Peter Franks, Managing Director of Mansfield-based Woburn Mechanical Services Ltd, added, “This is by some distance the biggest domestic project we have undertaken. The customer knew exactly what he wanted and now has a comprehensive heating and cooling system." Peter Franks concludes, "The Toshiba equipment is excellent in terms of performance and reliability and comes with a seven-year warranty. We wouldn’t be fitting it if we didn’t have complete confidence in it.’’

ECO Steam and Heating ordered a 10MW Electrode Steam Boiler for their Dutch customer - MARS WRIGLEY in Veghel. This is the largest chocolate bar factory in the world that produces brands, such as Twix, Mars, and Bounty. PARAT Halvorsen AS will deliver the 10MW High Voltage Electrode Steam Boiler that will reduce emissions and bring flexibility to their boiler house.  Power to Heat system The Power to Heat system will be delivered with a 10kV Connection, Design Temperature of 204°C, Operating Pressure of 13.5 barg, Circulation Pumps, and Feedwater Pumps. ECO Steam and Heating will take care of the Project Management, including lift-in and installation of the complete boiler system, while PARAT will do the start-up and training of personnel.

Paragon House – an 11 story teaching block at the University of West London (UWL), has recently replaced its gas boiler heating system with a ground-breaking first for Europe and the UK, by Finn Geotherm installing three x 210kW Panasonic air-to-water heat pumps with a bespoke cascading thermostatic control system to heat the entire building. The University of West London were looking to improve the energy performance of the building in a more sustainable way, reducing their carbon footprint and energy consumption, with the help of a Salix funded government grant (the UK Government’s Public Sector Decarbonization Scheme (PSDS) and the Low Carbon Skills Fund (LCSF)). Paragon House installs Panasonic heat pump system UWL appointed Ameresco as the main energy improvement contractor for the project UWL appointed Ameresco as the main energy improvement contractor for the project with Finn Geotherm as the contractor who specified and installed the 3 x 210kW Panasonic heat pump system, along with a bespoke cascade thermostatic control system that links with the building’s BMS. Paragon House is situated in a prestigious London location adjacent to the M4 with a mix of classroom and lecture theatres across 11 floors. Sustainable energy efficient system The main challenge for the project was that the University ideally wanted minimum internal disruption and an energy efficient system that could link and work with their existing pipework, radiators, cassettes and fan coils. A further challenge was lifting the three large 210kW units, each 6 square meters and weighing just over two tons onto the roof of the 11 story building. Detailed structural surveys were carried out to ensure the weight and distribution of the units at roof level would work effectively and safely. Panasonic air source heat pumps Guy Ransom, the Commercial Director at Finn Geotherm commented, “Originally it was thought that the best solution to meet the heat load for the entire building would be a ground source heat pump system but on initial surveys and inspections, it became apparent that the drilling of bore holes would be impossible given the ground space available and the proximity of the building to the M4 motorway and other busy London road networks.” Guy Ransom adds, “We have worked with Panasonic air source heat pumps over a number of years now and have developed a trusted two-way partnership with the team and where Panasonic has become our manufacturer of choice – we respect the quality of the units – they do what they say they can do.” Panasonic 210kW heat pump units installed Panasonic 210kW heat pump units installed at Paragon House were the first of their kind in the UK The Panasonic 210kW heat pump units installed at Paragon House were the first of their kind in the UK and Europe to be installed – the units offer outstanding efficiency with extremely high SEER and SCOP figures, can operate in temperatures as lows a -17 degrees Celsius in heating mode, are quiet in operation, offer a customizable design with capacities from 20k to 210kW, and can be integrated into a BMS control system. The team at Finn Geotherm worked with Panasonic’s European R&D and UK teams to obtain test data to support the specification of the units. The two teams liaised over a number of weeks to verify the data, ensuring the required range of output and input temperatures would work effectively on the bespoke thermostatic cascading control system. Maximize the use of the heat pump The aim was to maximize the use of the heat pump use when a back-up system was insisted on by the client for the Paragon House project. Guy Ransom stated, “We worked closely with the wider team at Panasonic and carefully laser measured and assessed the heat loss for each area of the building to ensure that the units would be able to distribute a similar level of comfort to the existing gas boiler system.” He adds, “The Panasonic system now installed at Paragon House was the first of its kind in Europe – this ground-breaking project pushes the envelope for similar large renovation projects in the future that are looking to decarbonize their heating systems - the customer is very happy with the end result.” Panasonic system lowers the carbon footprint The Panasonic system has lowered the carbon footprint of the property The Panasonic system has lowered the carbon footprint of the property and is highly energy efficient to run with little impact on the interior pipework and space within the building. The units are located on the roof to ensure they are discreet, quiet and unobtrusive to the surrounding area, having very little impact on the day to day running of the building during installation. A construction of support spreader beams and plates was designed to distribute the load within the tolerance of the roof area. University of West London pleased with the results Claire Willits, the Director of Property Services at the University of West London (UWL) said, “The University of West London has been very pleased with the results of the project and having now been through our first winter running on the new systems we can safely say the technology works!” Claire Willits adds, “This project has made a significant contribution in our carbon reduction journey and has given us reassurance that change for the better of the environment can also be cost-effective and deliver a practical operational solution.” Exceptional energy savings It is estimated that Paragon House will receive energy savings in the region of 1,058,000 kWh per year It is estimated that Paragon House will receive energy savings in the region of 1,058,000 kWh per year. Considering the other two Panasonic installs at UWL, the total amount of energy saving is expected to be in excess of 500 tons of CO2 per annum. The above project was recently announced as the award winner of the National Renewable Heat Project of the Year at the Energy Efficiency Awards 2022. Seamless design and installation Harvey Loyal, Specification Sales London for Panasonic, stated “The control of the 210kW units were new to the market when Finn Geotherm came to us with the project – we worked with the wider Panasonic technical team and Finn Geotherm to provide a seamless design and installation.” Harvey Loyal adds, “As this was a European first and so for peace of mind, the original boilers were kept as a back-up should the outside temperatures reach -5 degree or lower. 12 months following the installation, Paragon House has confirmed the boiler system has not once been utilized and the heating produced from the Panasonic Air-to-Water system fully meets the heating requirements of the building.” Since the initial installation of Panasonic air source heat pumps at Paragon House, Finn Geotherm has installed similar Panasonic systems in several other similar buildings across UWL, as well as many other large projects in and around the London area.