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As we look back at 2020, we are all reflecting on the year that was, and what we have learned from it. In the HVAC space, the year provided us with opportunities for growth and change, as we adjusted to our “new normal.” Here’s a look at some of the HVAC trends we see happening now taking hold as we head into 2021. Advancements and applications in indoor air quality - especially in HVAC space (SF / MF / CRE) 2020 was filled with starts and stops with regards to innovation. Covid-19 halted work in some facilities altogether earlier in the year. The pandemic has brought with it a re-energized interest in the air quality around us, especially in the public sector. There has been a newfound imperative in creating indoor air quality solutions that ensure that air is circulated, sanitized and purified to reduce the likelihood of the spread of sickness. This is a massive issue and 2021 will see growing efforts in these areas and the increased introduction of systems that will purify air quality. HVAC building systems Continued push toward energy efficiency (mainly SF but also CRE) Energy efficiency will be an ongoing issue into the foreseeable future. Once we have looked back at 2020’s carbon emission reductions (because fewer people were flying and driving) there will be no turning back. The same can be said for HVAC. Increased efficiency will continue to be an ongoing pursuit in 2021 and beyond. On average, HVAC appliances consume 48% of a household’s total energy usage. The latest generation of smart thermostats that use the newer 410A refrigerant have brought about reduced energy consumption by up to 35% optimizing how HVAC building systems are operated (reducing the possibility of leaving the AC on too long, and when it’s not necessary to use). convenience and energy savings Increase in supply chain management / platform services HVAC services such as those that collect and manage data including HVAC unit age, efficiency and condition at the property and portfolio level will continue to see increased adoption. These convenience and energy savings they provide is being seen in the multi-family and commercial space, especially with some building owners having been grounded by the pandemic in 2020. New construction had a role in expanding interest in HVAC asset tagging and helping it gain traction in the industry The data gathered by these services can be used in the future to predict HVAC system failures with significant accuracy before they happen. The convenience and potential cost savings acquired by implementing these services will continue to push their popularity into 2021. Additionally, it is interesting to note that new construction in 2020 had a role in expanding interest in HVAC asset tagging and helping it gain traction in the industry. Cataloguing HVAC assets ensures the follow up and guarantees that warranty registration holds and can help track future maintenance during a hold. At the time of sale, the current owner can present true data of the maintenance of these systems, which can increase the current value of the property and can also be used as a tool in negotiation. performing regular maintenance Remote monitoring can be the end to end solution that completes the action behind the alert (CRE mainly) Remote monitoring will continue to see adoption in 2021. Service providers will continue to rely less and less on clients identifying and reporting a problem a heating/cooling issue. The complaint from the tenant may come in some hours after the problem actually starts, and then by the time they get a service request completed, several hours more. And by the time the contractor is on the scene, it is likely more time has elapsed. Remote monitoring also results in regular maintenance, extending the lifetime of a HVAC system. By proactively performing regular maintenance, the overall costs of maintaining a system can be reduced by 40 percent, in addition to ensuring that units are always using the least amount of energy necessary. seamless customer experience Consolidation of HVAC services and equipment - the way people buy - turnkey integrated services One stop shopping for HVAC services and equipment gained popularity in 2020 One stop shopping for HVAC services and equipment gained popularity in 2020 and we will continue to see increased traction in 2021. There are many reasons why developers what to buy equipment directly from the manufacturer, such as convenience, working with a supplier because of its reputation, cost and guarantees on product and services. As more developers buy equipment directly, these manufacturers are responding by helping out with mechanical drawings. This process cuts down the supply chain, allows certainty that correct equipment is quoted, and saves money. The HVAC industry is also turning the corner in becoming more proactive in remediating failing assets and contractors are redoubling their efforts to provide a seamless customer experience increasing customer satisfaction for multi-family communities as well as other means of optimization of services that positively impact tenants, helping increase retention. HVAC providers that can manage the entire process from installation, to job request to invoicing, even reporting and tracking for each job, will be increasingly in demand in 2021.
Inverter driven air conditioning is more energy efficient, cheaper to operate and more profitable to install than its non-inverter driven equivalent. Here Neil Ballinger, head of EMEA at automation parts supplier EU Automation, explains how HVAC engineers can maintain the inverters in their customer’s aircon units. Do you remember cross country at school? It was exhausting; miles of seemingly pointless jogging and sprinting and, if the teacher was not looking, walking. If you were unlucky enough to be born before modern safeguarding measures were introduced, it probably also meant getting lost in the nearest woods.Why isn’t every installation an inverter driven unit, instead of the traditional single stage or dual stage models? My PE teacher, who seemed particularly vicious at the time, but in retrospect just knew about sports science than most, used to make us do something called fartlek as well. This meant long distance runs, incorporating elements of speed training by mixing up sprints with jogs and walks. The worst bit was starting to run again after a walk. That is exactly how the motor in your customer’s air conditioner feel if the units you fit are not inverter controlled. The motor has to act just like a runner doing fartlek — it sprints continuously, operating at full speed until the thermostat tells it the room is cool, then it stops. When the room gets warm, it starts again, powers immediately up to full speed and repeats the process indefinitely. Just like a teenage cross-country runner, it is the starting and stopping that is the tough bit. Furthermore, the unit probably doesn’t have to run at full speed to keep the room at the correct temperature, if the motor were inverter controlled it would speed up and slow down as the temperature fluctuates. Why isn’t all aircon inverter driven? We all know that inverter driven aircon is better than its non-inverter driven cousins. It can provide heating as well as cooling and the lifetime cost of use is less for the customer — because their energy bills stay low. The cost of installation is also higher because it is a more complex job, so it works out better for the contractor. It’s a win-win. The research firm Technavio even lists it as one of the key technologies driving growth in the HVAC market in its annual reports every year. So, the only question is, why isn’t every installation an inverter driven unit, instead of the traditional single stage or dual stage models?When contractors contact EU Automation to buy automation parts, for the units they maintain, they have given us another reason: maintenance Cost is a factor, but when contractors contact EU Automation to buy replacement motors and inverters, and other automation parts, for the units they maintain, they have given us another reason: maintenance. As HVAC engineers, we are not necessarily specialists in power electronics, and this makes inverter maintenance daunting. Microcontrollers and IGBTs (Insulated Gate Bipolar Transistors) are not beyond us by any means, but they can be intimidating. Personally, I would back an electrical or heating engineer over an electronics specialist in a problem-solving contest all day long; but that doesn’t solve the problem at hand. Furthermore, while we are experts in air conditioning brands, and know our Daikins and Grees from our Mitsubishis and Fujitsus, we don’t necessarily have contacts at the inverter manufacturers. Amtech, Danfoss, Vacon and Yaskawa are all names we know, but the local dealer for any of them is probably not in your phone book. This is especially true if the unit you need is from a first-generation inverter driven aircon unit and well over a decade old. While we are experts in air conditioning brands, and know our Daikins and Grees from our Mitsubishis and Fujitsus, we don’t necessarily have contacts at the inverter manufacturers Maintenance techniques While inverter maintenance can be daunting, it isn’t difficult. The tools you will need most often are nothing more than a rag and a spanner, while the more esoteric kit is stuff you probably carry anyway, a laptop, vacuum and a Fluke meter. Before you start, remember that while we tend to refer to an inverter as an inverter, the manufacturers themselves, and many of the sources of information online, often refer to them as VSDs (Variable Speed Drives), VFDs (Variable Frequency Drives) or just plain old drives. As a result, when you are searching online for a video to explain something, it’s worth using all three of those terms, alongside the inverter manufacturer’s name and the problem to make sure you get the right result.While inverter maintenance can be daunting, it isn’t difficult When you do move on to maintenance, step one is simple; make sure that the unit is free of dust. This is as easy as vacuuming the heatsink with an ESD (Electrostatic Discharge) vacuum cleaner when you perform routine maintenance or investigate a problem. While you are checking for build up of dust and daily grime, check the filters. They will probably have to be replaced during annual maintenance, but high use might mean they need to be replaced more often. The control panel itself should be well ventilated and free of dust as well, if it isn’t it can overheat, which is the number one cause of inverter damage and the most common reason contractors contact us for replacement units. Before you put your vacuum and duster away, you should make sure that the inverter unit’s location is clean and as sheltered from the elements as possible. Because it’s normally situated on a roof, it’s not going to be perfect, but the units are designed to take a limited battering. That doesn’t mean it’s okay for them to be covered in leaves, surrounded by rubbish or immediately beneath the guttering outlet though! Before you put your vacuum and duster away, you should make sure that the inverter unit’s location is clean and as sheltered from the elements as possible Get out the spanner Once you’ve finished these steps, you are done with dusting for now, it’s time to get out your screwdriver and your spanner. Step one is to make sure the fans on the inverter are operating normally, without noise and with nothing blocking their rotation. The fan keeps the internal components running effectively, just as it does on PC, and if its function is impaired the capacitors will overheat and the inverter will fail.When you install or maintain an inverter on an air conditioning system, it is a sensible precaution to back up the drive parameters to your laptop The next job is to grab your spanner and make sure the power terminals are on tight. Loose connections cause arcing, overheating and even melting of components and are easily checked during any kind of maintenance and repair. While we are still in the realms of the work your apprentice can do with their eyes closed, you should also make sure that the inverter’s removable LCD control pad is stored sensibly and not continually attached to the drive. If it remains attached, there is a chance the display will stay on permanently, which means that when you need it to diagnose a problem, it will probably already be burnt out. Break out the laptop When you install or maintain an inverter on an air conditioning system, it is a sensible precaution to back up the drive parameters to your laptop. It takes minutes and is normally done by using the removable LCD control. In fact, it’s often as simple as selecting ‘PARs’ and then ‘BACKUP’ from the menu. If you struggle, there are lots of videos on YouTube, like this one, which explain the process for each drive. As a result, if the inverter ever does need replacing, you can whip out your backed up parameters and order a new or refurbished one easily, before reloading the parameters to the replacement and getting up and running in no time. Your customers will think you are a power electronics genius, as well as a HVAC expert, and they will be loyal for life; especially of you save them on a hot day! If you follow these simple measures, you will find that the inverters in your customer’s air conditioning units last much longer and no motors will have to run the equivalent of a cross country, thanks to a lack of inverter control.
Sensors have been used in buildings since the invention of air conditioning to understand how buildings are performing, from in-room temperature sensors, to sensors on plant equipment, motors, ductwork and pipes. The Internet of Things (IoT) has enabled more sensors of different types to be deployed in more locations throughout the building easier than ever before. The point of installing and using IoT sensors is to gain deeper insight into how buildings are performing, and ensure buildings are healthier, more productive for people to work in, more effective to run and more energy efficient. This article looks at in-room sensors, such as temperature, air quality and occupancy, and how IoT sensors can help improve building performance. The benefits of IoT sensors is that they are easy to install, both physically and from a commissioning perspectiveThe benefits of IoT sensors is that they are easy to install, both physically and from a commissioning perspective. Cabling is usually minimal or not required at all: IoT sensors are battery powered, or require simple USB power (from a plug socket) or utilise Power over Ethernet (PoE). IoT sensors use low power wireless protocols (such as Bluetooth, Mesh etc) to send data, and thus can be placed anywhere within a building and do not require multiple physical IOs for integration. Unprecedented amounts of data IoT sensors are usually cost-effective such that thousands of sensors can be deployed throughout the building without much effort. This gives an unprecedented amount of data to building managers, which comes with its own challenges – How to make use of this data? There are two ways to utilise this data to improve building health, performance and efficiency: Use an effective monitoring platform or data analysis tools to turn raw data into actionable insights. This can provide the building and facilities team with insights to be more pro-active, and spot temperature, air quality, overcrowding, etc issues even before the users or tenants begin to notice e.g. it’s too cold, too drafty, too stuffy, etc. Integrate the live data from the IoT sensors straight into the Building Management System (BMS) and create new control strategies to automate the building further. This requires a bit more integration and commissioning work upfront, but the performance and efficiency benefits through automation will give a fast Return on Investment. The key here isn’t the sensor integration itself, but the building control strategy that will be the logic to which the building automation fucntions. Some use cases of IoT sensors are: Temperature and HVAC A common problem I’ve heard from many buildings is that existing temperature sensors that connect to the BMS have been placed in the ceiling, and not at head height. Using battery powered IoT temperature (and humidity) sensors, and sticking them to the wall at head height, is a quick and easy way to measure temperature where it actually matters.Data can be used to plot temperature heatmaps, find hot or cold spots, or analyse the solar heat gain Data can be used to plot temperature heatmaps, find hot or cold spots (e.g. if two nearby FCUs are working against each other, one heating one cooling); or analyse the solar heat gain, and adjust internal loads. The IoT temperature sensors can be connect to the BMS to provide more accurate temperature data to FCUs instead of the sensors in the ceiling. In general, IoT senors can easily be reconfigured and moved, e.g. during a fit out. But care needs to be taken to keep a close eye on the sensors and which room/space they relate to. Battery will need to be changed every 5 years. The IoT temperature sensors are cheap enough that they can simply be replaced with new ones e.g. the sensors element need recalibrating. Indoor air quality sensors and HVAC Accurate CO2 level sensors (which use duel channel NDIR technology) with IoT connectivity are getting cheaper and can also be used to do ‘heatmapping’, of the building, and provide accurate insights on indoor air quality. Similarly, heatmaps can be done with particulate matter sensors (PM10, PM2.5, PM1), VOC sensors and others embedded in an IoT connected sensor. CO2 level sensors in Accurate CO2 level sensors with IoT connectivity are getting cheaper and can also be used to do ‘heatmapping’particular are important as the level of CO2 indoors affects our cognitive ability. High indoor CO2 levels hinder our productivity. Indoor CO2 levels of 900ppm to 1400ppm and higher, which are seen in buildings with poor ventilation, reduce our ability to make decisions and use complex information by 15% to 50% and higher, respectively. Indoor CO2 levels are also a good indication of the risk of infection, as people breathing are usually the main source of CO2 in buildings. So being able to monitor CO2 levels in every space inside the building will provide building owners, tenants and users with reassurance with regard to COVID-19 related challenges. ‘eCO2’, a derivative from VOC sensors, should NEVER be used as a measure of CO2 levels. All CO2 sensors elements need to be recalibrated every 3-5 years. Occupancy level and HVAC Knowing the occupancy on every floor of the building can be used to control HVAC systems. Through BMS integration, controlling the flow of ventilation dynamically, based on real-time floor-by-floor occupancy, allows the building to ‘breathe’ with actual demand.Employing an occupancy-based, dynamic control strategy on the BMS reduces the energy consumption for buildings that rarely see full occupancy This balances the building from a technical perspective, and improves air delivery by opening up more ventilation capacity. Employing an occupancy-based, dynamic control strategy on the BMS, not only improves the indoor air quality, but also reduces the energy consumption for buildings that rarely see full occupancy, or have dynamic use (which will only be more common as we begin to work-from-home more often) Measuring the number of people is difficult, which usually means expensive. One way to count people is using PIR sensors places under each desk. This can get expensive for 1,000 desks even if one IoT PIR sensor is relatively cheap. Another way is to use a less accurate, but cheaper method, e.g. using long-range sensors that count the number wireless devices in a vicinity / floor, and using that as a proxy for percentage occupancy levels. Summary 1,000s of IoT sensors can be easily installed anywhere throughout any building. To get the best out of an IoT system a clear use case (or set of use cases) is necessary. By understanding the use cases and benefits, the right design, UI or integration can be used to maximise the cost-benefit ratio for the specific use cases, for example: BMS integration for IoT temperatures sensors; Relevant platform UI and analysis to extract actionable insights for the Facilities Management team from the raw IoT sensor data; or Correct HVAC control and automation strategy based on occupancy level data.
Bryant has launched the new Bryant Home app, which provides homeowners with an improved experience managing their Evolution™ System. This replacement for the MyEvolution Connex app, which is available now in the Apple® App Store® and Google Play® store, provides an enhanced homeowner experience, improved functionality and increased connectivity performance between the mobile device and home comfort system. Bryant, a pioneering supplier of heating, ventilating, and air conditioning (HVAC) equipment, is a part of Carrier Global Corporation, the pioneering global provider of healthy, safe and sustainable building and cold chain solutions. While the Bryant Home app has a new look and improved performance, it still includes many of the features and benefits homeowners were accustomed to with the previous MyEvolution Connex app. Homeowners will be able to control their entire advanced home comfort system to precisely manage the temperature, humidity and equipment efficiency.1 In addition, homeowners will be able to learn more about the outdoor air quality around their home, including the air quality index and the pollutant levels in the atmosphere. Bryant Home app The new Bryant Home app runs on a Carrier IO platform, which provides a solid backend and cloud platform to build robust IoT applications. This app represents the latest step in Carrier’s digital transformation journey as its residential business reinvents its holistic digital footprint. “We’re proud to introduce the Bryant Home app to residential customers,” said Gundeep Singh, Executive Director, Digital and Analytics, NA Residential & Light Commercial, Carrier. “Homeowners will enjoy the enhanced performance that better allows them to conveniently manage their home comfort settings from anywhere. This is the next progression in our digital transformation and we look forward to offering homeowners a new level of functionality as we continue to add new features and product compatibility.”
Bryant Heating & Cooling Systems launched the latest additions to its tier Evolution™ series with the Evolution Extreme 26 air conditioner (Model 186CNV) and Evolution Extreme 24 heat pump (Model 284ANV). Both products showcase a number of features performance, which includes numerous technological advancements with 12 patents pending. Bluetooth® diagnostic information Bryant, a supplier of heating, ventilating and air-conditioning (HVAC) equipment, is a part of Carrier, a global provider of innovative HVAC, refrigeration, fire, security and building automation technologies. Bryant also offers online troubleshooting and training modules, and virtual reality The Evolution Extreme 26 and 24 offer a number of enhancements designed with technicians in mind. Bluetooth® technology is available on the outdoor unit, making it unnecessary to access outdoor unit diagnostic information inside the home. Over-the-air software updates are available and technicians can assess over 130 diagnostic points. Sound output as low as 51 dB Plus, installations can use up to 250 equivalent feet of refrigerant line length, features two-wire installation, and the units are self-configuring and Evolution™ Zoning System-capable. Bryant also offers online troubleshooting and training modules, and virtual reality, 3D simulation training is available. Dehumidification can remove up to 70% more moisture per day than a single-stage system For most sizes, the Evolution Extreme 26 offers ratings for a ducted system at up to 26.0 SEER and 16.5 EER; while the Evolution Extreme 24 heat pump offers the in-class ratings at up to 24.0 SEER, 15.0 EER and 13.0 HSPF. Furthermore, both the Evolution Extreme 26 and 24 tout quiet operation with sound output as low as 51 dB. Ducted heat pump with a variable-speed The Evolution Extreme 26 and 24 include enhanced dehumidification and can remove up to 70% more moisture per day than a single-stage system. Plus, both units feature a variable-speed capacity operating range down to 25% in 1% increments and provide high-ambient cooling operation with full power up to 125 F. An Evolution™ air purifier will be included with the purchase of every Evolution Extreme 26 and 244 The Evolution Extreme 24 also offers heating operation to minus 15 F. In addition, it is has a ducted heat pump with a variable-speed, 5-ton unit that can achieve 13.0 EER and features the addition of vapor-injection technology. “We’re confident that homeowners will appreciate the features and benefits that are realized in our most ambitious development project to date. We’re also pleased to introduce enhanced installation and serviceability to our dealers, as we know that these improvements will make their lives easier,” said Todd Nolte, senior director, product and brand marketing, HVAC-Residential, Carrier. “The Evolution Extreme 26 and 24 are a true testament to the rigorous research and development that went into this project and we’re proud to be able to provide customers with such advantages.” Evolution™ air purifier destroys 99% germs and viruses In addition, an Evolution™ air purifier will be included with the purchase of every Evolution Extreme 26 and 244. The Evolution air purifier works silently in-line with the HVAC system and can improve indoor air quality. It uses Captures & Kills™ technology to trap up to 95% of particles, then uses an electrical charge to kill or inactivate up to 99% of germs and viruses. With every cycle of air that passes through this patented air purifying system, pollen, animal dander, bacteria and other pollutants are trapped and held tightly to the filter. An electrical charge then bursts the cell walls of pathogens it comes in contact with.
During the recent Bryant Dealer Rally, the company’s annual meeting where its top dealers are honored, Air Tech Heating, Inc. of Fond du Lac, Wisconsin was named Bryant Dealer of the Year, the highest honor a Bryant dealer can receive. Each year, this award recognizes the company whose hard work, expertise and business acumen have helped them to stand out as a leader in the industry. Bryant, a national supplier of heating, ventilating and air-conditioning (HVAC) equipment, is a part of Carrier, a global provider of innovative HVAC, refrigeration, fire, security and building automation technologies. “We’re both honored and humbled to be selected as the 2019 Bryant Dealer of the Year,” said Dan Price, owner, Air Tech Heating, Inc. “I’m incredibly proud of the entire team at Air Tech and I appreciate being recognized for doing business our way, with honesty and integrity.” Bryant Factory Authorized Dealer “We’re proud to be a Bryant Factory Authorized Dealer and have the support of such a great company. I’m also grateful for the amazing relationships we’ve built with both Bryant and our distributor, Auer Steel, over the course of my 22 years owning the business.” Dan and his team serve as ideal examples for other Bryant dealers of how to run a successful business" Founded in 1997, Air Tech Heating, Inc. has become known as the “Best Heating & Air Conditioning Company in the Fond du Lac Area” for ten straight years by Gannett Readers’ Choice. In 2018, Price’s son, Jim, and his wife, Sarah, became co-owners of Air Tech Heating, Inc. ensuring that it will remain a fixture in the community for years to come. It’s even more fitting that Air Tech Heating, Inc. was selected as the 2019 Bryant Dealer of the Year, as Price retired shortly after the Dealer Rally. Indoor air quality equipment sales “Bryant dealers continue to help set the standard in our industry,” said Matthew Pine, president, Residential HVAC, Bryant. “Our 2019 Dealer of the Year, Air Tech Heating, Inc. is an exemplary organization and has risen to the top among the very best in our elite group of dealers. Dan and his team serve as ideal examples for other Bryant dealers of how to run a successful business and do ‘Whatever It Takes’ to care for our customers.” Bryant selected its 2019 Dealer of the Year from 22 Medal of Excellence winners, comprised of Bryant Factory Authorized Dealers from throughout North America. The candidates were judged on overall sales growth, high-efficiency and indoor air quality equipment sales, customer satisfaction and participation in dealer programs and promotions. Medal of Excellence Winners The 2019 Medal of Excellence Winners include: Affordable Heating and Air Conditioning, Inc. - Cudahy, Wisconsin AGS HVAC Services - Westport, Massachusetts Air Tech Heating, Inc. - Fond du Lac, Wisconsin Bennett Heating and Air – Purvis, Mississippi Bob’s Heating & Air Conditioning - Woodinville, Washington Chadds Ford Climate Control - Chadds Ford Chapman Heating | Air Conditioning | Plumbing - Indianapolis, Indiana Chris Mechanical Services, Inc. - West Chicago, Illinois Cosby Heating - Mount Vernon, Ohio Dave’s Heating and Air - Lincoln, Nebraska Design Air, Inc. - Missoula, Montana Evergreen Gas, Inc. - Sherwood, Oregon Family Heating and Air - Pensacola, Florida Federal Elite Heating & Cooling, Inc. - Dresden, Ohio Fort Collins Heating and Air - Fort Collins, Colorado GAC Services - Gaithersburg, Maryland Gainesville Mechanical, Inc. - Gainesville, Georgia Haley Comfort Systems - Rochester, Minnesota IERNA’S Heating & Cooling, Inc. - Lutz, Florida Precision Heating & Air Conditioning - Twin Falls, Idaho Regal, Inc. - York, Pennsylvania Waychoffs Heating & Air Conditioning - Jacksonville, Florida In addition to the Dealer of the Year award, Bryant named Peck & Weis Heating, Cooling, Plumbing & Electric of Lake Geneva, Wisconsin as this year’s recipient of the Charles Bryant Award. The Charles Bryant Award, named in honor of the company’s founder, recognizes a loyal Bryant Factory Authorized Dealer (FAD) that epitomizes the characteristics of Charles Bryant, including professionalism, quality, reliability and community spirit.