HVAC Maintenance

Carrier Solutions UK is set to make an impact at HVAC+R at UK Construction Week 2025, with an impressive stand showcasing its expanded portfolio of best-in-class heating and cooling solutions. Carrier Solutions UK Ltd (formerly Toshiba Carrier UK Ltd) is a part of Carrier Global Corporation, a pioneer in intelligent climate and energy solutions.  Latest advances in heat pumps Under the theme “Power Play as One Team”, Carrier Solutions UK’s stand will unite three of the industry-pioneering brands: Carrier, Toshiba, and Viessmann, under one cohesive presence, reinforcing Carrier’s position as pioneers within the UK HVAC sector. Visitors to Stand H670 can explore the latest advancements in heat pumps, VRF and hybrid heating technology, including: Toshiba: The all-new SHRMu VRF, expanded RAV Digital Inverter range (8-10 HP), DAISEIKAI, HAORI & SHORAI Edge wall-mounted units, standard cassette and one-way cassette systems and the award-winning Mini Touch Screen Controller. Carrier: AquaSnap 30AWH-P R290 monobloc heat pump, next-generation Carrier splits and the UK launch of the XCT8 VRF system. Viessmann: The Vitocal 150 residential heat pump, Vitocal 250 Pro (40 kW commercial heat pump) and Vitocrossal 200 CI3 commercial boiler. Future of heating and cooling “As a pioneering force in the HVAC industry, we are proud to present our latest innovations, demonstrating how Carrier Solutions UK is helping to shape the future of heating and cooling,” said David Dunn, Managing Director UK&I, Carrier RLC EMEA. He adds, “This year’s stand will showcase our best-in-class solutions across residential and light commercial applications, all designed to enhance efficiency, performance and sustainability.” Carrier Solutions’ sponsorship partner Mark Cueto MBE, former England Rugby World Cup winner and brand ambassador for Carrier The Carrier Solutions UK stand will welcome Thomas Heim, President, Carrier RLC EMEA and Faiz Afzal, Vice President of Sales, EMEA International, Carrier RLC EMEA.  Adding to the excitement, Mark Cueto MBE, former England Rugby World Cup winner and brand ambassador for Carrier Solutions’ sponsorship partner, Sale Sharks, will make a special appearance, offering attendees the chance to meet a sporting legend.  Latest in HVAC innovation With a product portfolio that addresses the full spectrum of residential, light commercial, and multi-fuel heating and cooling needs, Carrier Solutions UK continues to drive innovation and provide cutting-edge solutions for installers, contractors, and building professionals. Join Carrier Solutions UK at Stand H670 from 7-9 May 2025 at the London ExCeL to experience the latest in HVAC innovation.

Modern data centers require advanced cooling solutions to operate at peak performance. As one of the most rapidly growing industries in the world, data centers are changing how they develop new cooling technology at a record pace. The data center market is projected to continue growing by 8.5% per year over the next five years, to over $600 billion by 2029. Global power demand by 2028 Artificial intelligence (AI) and machine learning (ML) are driving increased data center demand, and the numbers are clear—this is only the beginning. Goldman Sachs Research estimates a nearly 200 terawatt-hour per year increase from 2024 to 2030, with AI representing about 19% of data center global power demand by 2028. It’s safe to say that there is great emphasis placed on infrastructure development to build new and expand existing data centers.  Data center cooling systems The cooling system chosen plays a vital role in mitigating these risks while providing options To optimize computing power and storage capacity in a smaller space, server rack densities are higher than ever, and the heat emitted requires constant and consistent heat-rejection to prevent overheating and component damage. The cooling system chosen plays a vital role in mitigating these risks while providing options to maximize facility efficiency and Total Power Usage Effectiveness (TUE). Data center cooling systems are designed using equipment to cool the servers inside the building working together with equipment outside the building to reject the heat. Cooling Technologies Inside the Data Center There are two primary cooling processes used inside the data center, air cooled and liquid cooled. Air Cooled Server Racks Air cooled server racks have been used extensively in data centers for years. They are ideal if they have a standard enterprise IT infrastructure or a storage-based system and want a more traditional solution. However, the heat from increasing rack densities is growing beyond their ability to meet the needs of many data centers. There are also hotspots, higher TUE, and a higher carbon footprint than liquid cooling. Liquid Cooling Liquid cooling can absorb and carry away significantly more heat and is now becoming necessary to handle the increased cooling demands. Immersion cooling systems are born from remarkable ingenuity, allowing sensitive computer parts to be fully submerged in a non-conductive dielectric fluid that efficiently rejects heat. Immersion cooling tanks are often paired with an evaporative or dry cooler outside the data center to maximize cooling output with many additional benefits. Immersion cooling tanks are often paired with an evaporative or dry cooler outside the data center to maximize output With the demand for servers in data centers at an all-time high, power consumption and server storage are huge concerns. With exceptional heat dissipation, immersion cooling tanks allow for servers to be stored closer together. Combined with outside cooling units without a chiller in between, TUE is also greatly improved. This system provides consistent cooling with substantial energy reduction, opening pathways to improved high-density computing.  Two liquid cooling alternatives are direct-to-chip cooling and rear door heat exchangers. Direct-to-chip cooling circulates cool liquid through a cold plate that contacts heat-generating components like the CPU or GPU. This method, however, is less efficient than immersion cooling and can be challenging to maintain. Rear door heat exchangers (RDHx) are another alternative that can add liquid cooling abilities to existing air cooled facilities. The RDHx cools warm air from equipment and expels it out the front or rear door, unlike traditional cooling systems that process air in a separate area of the data center. RDHx systems are less efficient and have limited heat removal capacities compared to immersion cooling. Heat Rejection Technologies Outside the Data Center There are also a wide arrange of heat rejection technology options to cool outside of the data center to meet site-specific goals. Dry Cooling Buildings located in regions with cool ambient air can utilize that outside air to lower internal temperatures Dry coolers are an increasingly common choice for data center cooling because they can effectively lower the inside temperature of facilities without using water. Sites that operate in water-stressed areas may choose dry coolers for their industry-leading Water Usage Effectiveness (WUE). Buildings located in regions with cool ambient air can utilize that outside air to lower internal temperatures, cooling the intended space in an energy-efficient transfer. Dry cooling inherently uses more energy than evaporative cooling, but many dry cooling units are constructed with access to renewable energy, creating a sustainable long-term solution. Hybrid and Adiabatic Cooling Hybrid and adiabatic coolers provide options to balance the trade-off between energy consumption and water usage. With the ability to operate in both dry and evaporative modes, using wet mode during hot design days and switching to dry mode when ambient temperatures drop, these systems optimize water and energy usage based on the facility’s needs. While there are functional differences between the two, both hybrid and adiabatic cooling provide users with the flexibility to reduce water or energy consumption throughout the year. Users facing water stress can still reap the energy-saving benefits of evaporative cooling while using much less total water.  Evaporative Cooling Evaporative cooling systems use the same principle as perspiration to provide cooling. A cooling tower evaporates water over fill and/or coils to efficiently reject heat and discharges warm air from the cooling tower to the atmosphere, and are extremely energy efficient. Evaporative fluid coolers, or closed-circuit cooling towers, maintain a clean, contaminant-free system using two fluid circuits: an external one where spray water mixes with air, and an internal one where process fluid flows through a coil. For data center sites with access to fresh water, evaporative cooling towers and fluid coolers save energy, allowing more to be directed to servers. With widespread development of data centers around the world, there are many different environments that require solutions with either less water usage, less energy consumption, or some bridge between the two. Knowing how much water and energy is necessary for cooling is crucial to understand which outside cooling solution suits a data center best. BAC specializes in cooling for the future, providing a system solution for data centers that combines immersion cooling with dry, adiabatic, hybrid and/or evaporative cooling options. Connect with a BAC representative to learn how they can cool their data center in ways that sustain the world.

Viessmann Climate Solution UK's Vitotrol 100-E Modulation Control is now available for new Vitodens 050-W gas condensing boilers, allowing end-users to wirelessly control their hot water and heating. Viessmann Climate Solutions is a part of Carrier Global Corporation, a pioneer in intelligent climate and energy solutions. Launched in 2023 for its Vitodens 100-W and 111-W unvented system and combi storage boilers, Viessmann has also released a Vitotrol 100-EH model for heat pumps, which communicates with the Vitocal 150-A and 151-A domestic air source heat pumps via low-power radio. Vitotrol 100-E control “The success of the battery-powered load compensation Vitotrol 100-E control has been built on its operational efficiency and ease of use for installers and customers,” says Chris Johnson, Director of Sales at Viessmann Climate Solutions UK. “It enables the boiler to operate at a lower flow temperature, which enables the boiler to condense more. This is when it operates most efficiently. The positive feedback since we launched the Vitotrol 100-E means it was a simple decision to expand its compatibility to the Vitodens 050, as well as introducing a version that works with heat pumps.” Vitotrol 100-E Boiler Plus requirements Viessmann's service app for trade allies takes installers through a guided set-up using simple QR codes The Vitotrol 100-E meets all Boiler Plus requirements, with no outdoor sensor required. Additionally, the manufacturer’s warranty matches the warranty of the boiler it connects to. The modulation control is also simple for customers to use via the ViCare app and through physical controls, with any boiler faults highlighted on the screen for peace of mind. Integrating directly with Viessmann’s WiFi-enabled One Base software with no need for additional receivers, the Vitotrol 100-E does not require any wiring. These factors make it simple to install. The free-to-access ViGuide app, Viessmann's service app for trade partners, takes installers through a guided set-up using simple QR codes, and provides an overview of the installation progress. Viessmann Vitodens boiler range The app, which works on any mobile device and desktop, is also designed to deliver an efficient after-care service, with remote monitoring of all customers’ systems, enabling installers to take action immediately if any faults occur. Installers interested in learning more about the Viessmann Vitodens boiler range and being trained on Viessmann products.

A survey conducted by Baxi of 200 state school estate managers, consultant engineers, and M&E contractors has found that while enthusiasm for net zero and support for low-carbon heating systems in schools is thriving, persistent barriers remain. The survey found extremely strong support for net zero within schools, with 90% of estates managers who responded agreeing that net zero is a priority, a sentiment echoed by 78% of consultant engineers and contractors. 99% of the school estate managers surveyed reported having a net-zero plan in place. Low-carbon heating and net zero The most prominent was technical difficulty as a barrier to deployment Experience and satisfaction with low-carbon heating systems within schools was also high, with 95% of school estate managers having replaced a fossil fuel boiler with a heat pump in their buildings previously. 97% of all school estate managers (87% of all respondents) viewed heat pump performance and operating costs favorably. Despite the strong support for low-carbon heating and net zero in schools, the study also uncovered significant challenges faced by respondents when opting to install a low-carbon heating system. The most prominent was technical difficulty as a barrier to deployment. Decarbonization projects With 36% and 39% of school estate managers and consultant engineers and contractors respectively identifying the challenge, there may be a skills gap which can stall decarbonization projects. Both groups also agreed that additional electricity capacity needed for low-carbon heating solutions was a challenge, with 36% of consultant engineers and contractors outlining this as a barrier to decarbonization. Other core challenges School estate managers placed core challenges, including the financial and technical feasibility School estate managers identified other core challenges, including the financial and technical feasibility of school heating system changes, infrastructure requirements, and the length of project timelines as any major refurbishment projects are typically restricted to the fixed window of time of the summer holiday period. Additionally, the UK’s electricity pricing is placing a persistent barrier in front of those at the forefront of decarbonizing state schools. Hybrid heat pump systems The study did identify potential solutions in the form of hybrid heat pump systems and prefabricated packaged solutions. Among Baxi survey respondents, hybrid heat pumps are a popular solution, with a slight preference for this technology over a standalone heat pump system. 80% of the consultant engineers and contractors surveyed would be likely to recommend a hybrid system, and support for hybrids among school estate managers increased with school size. Hybrid heat pump solutions The shorter structure timeframes need installing a hybrid solution vs reversing to a heat pump system This could be attributed to several factors, including costs, integration with existing hydronic systems, and the shorter installation timeframes required to install a hybrid solution versus converting to a standalone heat pump system. However, grant support for hybrid heat pump solutions under the Public Sector Decarbonization Scheme (PSDS) is limited, despite strong backing for the technology. Policy recommendations Baxi is calling for four clear steps that they believe the government must take to ramp up the decarbonization of state schools and remove barriers preventing the installation of hybrid heating systems within public buildings. Include heating system upgrades for schools within existing public sector support schemes, utilizing GB Energy to support Include hybrid heating systems within existing support schemes Address the imbalance in price between gas and electricity Address the skills gap to help deliver clean energy projects.

A-Gas, a pioneer in the supply and lifecycle management of refrigerants and associated products and services, announces that Andrew Stride will serve as General Manager for their Canadian operations and expanded business in Nova Scotia. Andrew Stride joined A-Gas in the fall of 2021 and became Director of Operations in Canada in late 2023. During his tenure leading A-Gas’ Canadian operations at the Hamilton site, Andrew has led the start-up facility in Stoney Creek, Ontario, from a greenfield location to a fully functioning down-packing refrigerant site.   Prior roles of Stride Andrew will oversee the expansion of the operations and capabilities in the Canadian market Andrew Stride played a crucial role in the business’ recent acquisition of Refrigerant Services Inc. (RSI), a recognized brand in the Canadian refrigerant industry. He successfully led the operations and management integration for the acquisition, helping to ensure that both companies’ high-quality services and customer focus continued. Going forward, Andrew will oversee the expansion of the operations and capabilities in the Canadian market. A-Gas ongoing commitment As part of this acquisition, A-Gas is proud to join the Refrigerant Management Canada (RMC) Pollution Prevention (P2) Program—Canada's pioneering initiative for responsible refrigerant lifecycle management. This step underscores the ongoing commitment to effective lifecycle refrigerant management (LRM) solutions—recovering, reclaiming, and repurposing refrigerants to reduce the risk of emissions and support customers in embracing circular economy principles. A-Gas’ dedication Step underscores the ongoing commitment to effective LRM solutions “Andrew’s leadership has truly brought the best of A-Gas to Canada. Between his experience at our Rhome, Texas site and bringing best practices from other sites across the globe, Andrew has built our Hamilton site into a high-quality facility to serve the Canadian market,” noted Mike Armstrong, Managing Director and President, A-Gas in the Americas. “I could not be prouder of A-Gas’ dedication to assist businesses across Canada in enhancing their refrigerant management strategies and my ability to support the organization in its goals. Beyond that, my family and I have loved living in and enjoying Ontario’s natural beauty, exploring this incredible country, and joining this friendly community,” shared Andrew Stride, General Manager for A-Gas in Canada.  A-Gas site in Ontario and RSI sites In addition to offering virgin product, the A-Gas site in Ontario and RSI sites in Dartmouth have the capability to process and clean recovered refrigerant from the local market. Used refrigerant sent to the facility will undergo chemical analysis at the onsite laboratory and will be reclaimed to AHRI-700 standards.  As a result, A-Gas will provide the Canadian market with high-speed refrigerant recovery, quality refrigerant supply, a unique and cost-effective refrigerant reclaim program, and on-site laboratory and analytical services.

On National Apprenticeship Day, April 30, 2025, Ziehl-Abegg isn’t just celebrating a program—it’s celebrating people. People like Joshua Baxley, who walked through the doors of the company as a curious apprentice and now helps design next-generation airflow systems as a Jr. Project Engineer at the company’s state-of-the-art North American headquarters in Winston-Salem. Joshua’s journey is one of many that illustrates how apprenticeships are more than training—they’re transformation. “Being part of Ziehl-Abegg’s apprenticeship program gave me more than technical skills—it gave me confidence, mentorship, and a path to a career I love,” Baxley said. “It wasn’t just a job; it was a launchpad.” Ziehl-Abegg’s apprenticeship program Ziehl-Abegg’s apprenticeship program is designed to turn potential into profession Joshua’s hard work earned him national recognition in 2024 as a Trailblazer Apprentice, part of the Department of Labor’s Apprentice Trailblazer Initiative designed to increase accessibility in Registered Apprenticeship; engage industry in new and emerging sectors; and expand pre-apprenticeship, youth apprenticeship, and degree apprenticeship across America. Ziehl-Abegg’s apprenticeship program is designed to turn potential into profession. Led by Layel Burton, the company’s Apprenticeship Coordinator, the program offers hands-on training, real-world experience, and pathways to full-time careers in engineering, production, and beyond. Ziehl-Abegg long-term vision “Our apprentices inspire me every day,” said Burton. “They show up ready to learn, to contribute, and to grow. Watching them evolve into professionals who drive innovation—it’s one of the most fulfilling parts of my work.” With roots in Germany and a growing presence in North America, Ziehl-Abegg sees its apprentices as essential to the company’s long-term vision. “We can’t build the future without investing in the people who will lead it,” said Jimmy Mitchell, Managing Director. “Our apprentices bring curiosity and drive, and in return, we provide a place where they can build a career—not just a job.” Council on Workforce and Apprenticeships Governor Josh Stein signed an executive order creating the Council on Workforce and Apprenticeships This year’s celebration also comes at a pivotal moment for workforce development, both in North Carolina and across the United States. On March 25, Governor Josh Stein signed an executive order creating the Council on Workforce and Apprenticeships, a statewide initiative focused on aligning education, training, and high-growth career opportunities. “Our state’s greatest asset is our people,” said Governor Stein. “To invest in our future, we must invest in our people. No state will outwork North Carolina when it comes to developing our workforce.” Recognition of apprenticeships At the national level, workforce development also remains a priority. On April 23, President Donald Trump signed an executive order aimed at expanding access to apprenticeships, with a goal of bringing 1 million new apprentices into the U.S. workforce. Together, these actions reflect a growing recognition of apprenticeships as a vital tool for bridging skills gaps, strengthening economies, and creating meaningful career pathways. Ziehl-Abegg applauds this effort and sees it as affirmation of the work being done through its own apprenticeship program. Skilled trades gap in North Carolina “It’s encouraging to see these initiatives echo the values we live by at Ziehl-Abegg,” said Burton. “When we connect learning with real-world opportunity, we empower people—and communities—to thrive.” Apprentices have gone on to become engineers, team pioneers, and subject matter experts—many of whom played a key role in launching the company’s award-winning Winston-Salem facility.  The program continues to grow in partnership with local schools and technical institutions, helping bridge the skilled trades gap in North Carolina and beyond. This National Apprenticeship Day, Ziehl-Abegg honors the learners who became pioneers—and invites the next generation to imagine what’s possible when education meets opportunity.

Although energy efficiency continues to be a focus of home renovation, HVAC professionals are sometimes hesitant to work on older homes. The potential costs and complexities of replacing outdated HVAC systems or installing a solution where one doesn’t exist can make them nervous. However, installing all-electric, all-climate heat pumps in homes built decades ago, even a century ago, is an everyday occurrence in the northeastern U.S. Heating and cooling systems A sizable portion of Jay Moody Heating & Air Conditioning consists of installing and servicing energy-efficient heating and cooling systems, especially heat pumps, in older homes in central Massachusetts. Updating older homes with heat pump solutions is more feasible than many think — it’s a matter of overcoming common barriers and being the right, experienced HVAC professional for the job. Common barriers when heating and cooling an older home In Massachusetts, it’s common to have one or more 275-gallon tanks of oil in the basement to heat homes Barriers to renovating older homes are surmountable. Commonly, older homes lack adequate filtration and insulation and are equipped with older electrical panels that might need upgrading or replacing.  In Massachusetts, it’s common to have one or more 275-gallon tanks of oil in the basement to heat homes. However, whether an older home is heated with oil or gas, outside air infiltration occurs because these structures generally lack a tight building envelope. More recently built homes have these systems to prevent outside air and water from penetrating the structure. Similarly, many older homes are insufficiently insulated. Size of the structure and other electrical loads As a first step, owners of older homes should get an energy audit and find out what can be done to eliminate infiltration, such as having air sealing performed and having more insulation blown into their houses. Once weatherization is complete, installing an all-electric heat pump system becomes more feasible. Another important requirement would be an appropriately sized electrical panel. Older homes might have 100 amps of service, for example, when it will need 200 amps for the new heat pump, depending on the size of the structure and other electrical loads such as electric stoves/ovens, water heaters, and electric vehicles. In some cases, an electrical panel upgrade may be required. Attributes homeowners look for in an HVAC company HVAC companies that specialize in heat pumps should ensure their HVAC technicians are shared and ongoing training When upgrading an older home with a heat pump system, it’s a best practice for homeowners to get multiple quotes from experienced contractors in their service area. To stand out and offer more value during this process, my business conducts monthly heat pump workshops that help educate customers. Additionally, I recommend that any experienced, reputable HVAC company should post online reviews, have a professional website and online presence, and show relevant work examples to help familiarize homeowners with their work. HVAC companies that specialize in heat pumps should ensure their HVAC technicians are experienced and undergo ongoing training. In fact, the Jay Moody team is part of the Mitsubishi Electric Diamond Contractor® program, which provides in-depth training on heat pump solutions. Homeowner’s comfort preferences During the in-home consultation, the salesperson should discuss the homeowner’s comfort preferences, HVAC concerns, and short- and long-term plans for the home and its HVAC system. The contractor should conduct an in-house Manual J to calculate the heating and cooling loads of the home, ensuring proper HVAC equipment sizing for efficient and comfortable performance. Lastly, the HVAC salesperson should make suggestions for keeping the aesthetics of an older home intact. For instance, my team would not use mini-splits in certain rooms in a Victorian home because they might detract from the style. Instead, they would likely suggest a ducted heat pump system with air handlers and stylish vents. HVAC salesperson should make suggestions for keeping the aesthetics of an older home intact. Heat pumps offer the right fit for homes of all ages In the Northeast, many of the homes are older – whether that means built in the 1960s, the 1860s, or the 1760s. There’s little reason that any HVAC contractor should shy away from installing heat pump systems in older homes. Further, contractors can learn how to teach homeowners about heat pumps, train their teams, and recommend the right system for the character of the house. Refurbishing these beautiful houses is a challenge well worth tackling to create homes as energy-efficient and comfortable as they are charming.

Training has always been important in the heating sector, not least of all because of the dangers associated with working with gas, the traditionally dominant heating fuel in the UK. With the changes that are occurring across the heating industry, primarily the move towards decarbonization, manifesting in a transition to heat pumps, training is more important than ever. Principles of heat pump technology Training could take the form of a CPD on understanding the guides of heat pump technology That training could take the form of a CPD on understanding the principles of heat pump technology through to specific product training addressing installation, commissioning, and maintenance. Commercial heating training courses are abundant. Unless there is a specific manufacturer’s product you want to train on, how do you choose a training course and provider that is right for you? Here, we look at the key aspects to consider when selecting a training course and training provider. Expertise & knowledge By far the most important aspect of any training is the level of expertise and knowledge of the training providers. The training course needs to be both written and delivered by people who have direct experience in the heating industry. Knowledge or qualifications in training techniques and knowledge transfer are equally important. For contractor-based training, ideally, the trainers will have a background in heating engineering. This enables them to not only cover the core content of a training course but also address how it applies in real working-life situations. Knowledge or qualifications in training techniques and knowledge transfer are equally important. For specifiers looking to expand their knowledge through CPD courses, it’s helpful if these are presented by experienced Specification Managers who understand the needs of a specifier and have extensive knowledge of heating systems. On-site facilities The environment itself plays an important role in the success of the training The environment in which you learn plays an important role in the success (or otherwise) of the training itself, which is often overlooked. Being in a comfortable environment free from distractions will support you to better focus on your learning. Is the training held in a dedicated training center or a makeshift back office room? Is it a comfortable environment in terms of seating, desks, heating/air conditioning? Is the presentation equipment up to scratch? But most important of all, is the heating equipment you are learning about present, and is it functional? Training and Technology Centers  At our Training and Technology Centers, we provide learners with on-site access to a range of commercial heating equipment, including a unique thermodynamic heat pump simulator where they can view the change of state of refrigerant when in operation. Hands-on training for contractors is vital as it enables more learning by doing and problem solving, and therefore, greater depths of understanding can be gained. In our feedback survey, this comes up as one of the most important and popular aspects. It’s one thing to have something presented to you, but to be able to work through scenarios with expert support is quite another. Hands-on training for contractors is vital as it enables more learning by doing and problem-solving. Location A CIBSE-approved CPD, for example, doesn’t require hands-on training We’ve looked at the importance of how a training course is delivered, but where it is delivered also has a role to play. Does the training provider have training facilities nationwide, or in just one location? The latter could make for long travel times and even an overnight stay. Ideal Expert Academies are located around the UK at Hull, Leeds, Dalgety Bay, and Luton. Lastly, not all training needs to be done in person. A CIBSE-approved CPD, for example, doesn’t require hands-on training. In these instances, online training is a good, convenient option. Will the training provider be able to deliver this and how? Is it just a PowerPoint presentation, or are other elements included, such as video, attendee tasks, etc? Range of courses and delivery Having a range of courses is obviously important in that it provides you with choice and allows you to fill in the gaps of your knowledge, as well as learning about emerging technologies and best practices. A good training provider will also provide a flexible delivery model to meet individual learner needs and have the knowledge and expertise to support those with learning difficulties. Good training provider also provides a flexible delivery model to meet individual learner needs. Endorsement Ideal Heating’s adult learning provision was assessed by Ofsted, and they received an excellent report Whilst it’s important to do your own ‘homework’ on training providers, third-party endorsements are very useful. These come in different forms, from customer feedback (there are plenty of forums that provide you with the opportunity to ask for feedback), through to recognized industry awards, and independent assessment. Last year, Ideal Heating’s adult learning provision was assessed by Ofsted, and we received an excellent report, plus our Expert Academy team was recognized as Training Partner of 2024 by Hull City Council for delivering Skills Bootcamp programs for hundreds of learners in the area. We were also delighted to receive the inaugural BESA award for Training Provider of the Year 2024. Cost The last aspect I want to touch on when it comes to training is cost. How much should you pay for training? You should really consider the value you believe will be returned from the program and the provider you choose.  If you are going to benefit from state-of-the-art facilities, you may probably expect that experience may cost more than somewhere very simple and basic. Training providers are businesses, and the good ones do invest heavily in facilities and staff development. The good ones do invest heavily in facilities and staff development. Ideal Heating as a manufacturer strongly believe that our training services are part of what we deliver in our product sales. For this reason, we provide many of our training programs for free or at very low cost, despite the significant investment into our resources. Working alongside our specifiers and installers to meet their training needs builds for a strong relationship and successful projects. Choose wisely Taking time out from your busy schedule to dedicate to training is an investment, financially in some cases, so selecting your training course wisely to maximize that investment is sensible.

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.

Viessmann Climate Solutions (VCS) has combined with Carrier to become the core of Carrier’s newly formed business unit Residential and Light Commercial for European, Middle East and Africa. This business unit is now able to offer brands like Carrier, Toshiba, and Beretta next to the premium brand Viessmann, thus covering additional user segments with differentiated products at various price points. Climate system technology “The climate system technology of Viessmann Climate Solutions and the cooling-focused systems of Carrier combine two core competencies that will be crucial in responding to individual customer needs worldwide,” says Thomas Heim, President, Residential & Light Commercial HVAC for Europe, Middle East, and Africa. “Carrier expands the Viessmann portfolio in the area of air conditioning and enables seamless integration of heating and cooling.” Carrier’s acquisition of Viessmann Climate Solutions There was huge media interest in Carrier’s buy of Viessmann Climate Solutions when it was revealed There was huge media interest in Carrier’s acquisition of Viessmann Climate Solutions when it was announced more than a year ago. In media interviews, Carrier Chairman & CEO David Gitlin; Max Viessmann, CEO and Member of the Executive Board of the Viessmann Group, which owned Viessmann Climate Solutions prior to Carrier’s acquisition; and Heim presented the many advantages the combination would bring. Advantages apply both to the product portfolios, which perfectly complement each other, and to the optimized development of global markets. A year later, the feedback is extremely positive, says Heim. Latest developments in the Viessmann system The sentiment was confirmed by numerous conversations with installers at the ISH 2025 trade fair in March in Frankfurt. “The advantages of this combination between Viessmann Climate Solutions and Carrier are clearly noticeable for everyone involved,” says Heim.   The latest developments were well received by the 100,000 visitors to the booth at ISH, with particular interest in the Viessmann system connecting several products into a solution based on full stack controls platform Viessmann One. Residential and commercial sector customers The alliance meets the needs of residential and commercial sector clients with a multi-brand portfolio Also at ISH, Viessman highlighted the newly created alliance of Viessmann, Carrier, Riello, and Beretta around the theme “Power Play as One Team.” The alliance meets the needs of both residential and commercial sector customers with a multi-brand portfolio of heating, ventilation and cooling solutions for all output ranges and price levels. “Together with Carrier, we are in an even better position to provide solutions that address climate challenges by reducing CO₂ emissions and increasing energy efficiency,” says Heim. Digital tools and ecosystems The expanded product line builds on the strong longstanding collaboration of Viessmann Climate solutions with installation partners. For example, the addition of (light) commercial Carrier heat pumps to the portfolio enables leveraging together existing digital tools and ecosystems with this expanded offering. “This increases the relevance of our ecosystems for both our installers and users,” says Heim. Culture of collaboration The focus from the start has been on creating a culture of collaboration among both teams When integrating companies, it is always about bringing people together and providing a framework that allows them to unlock their full potential, says Heim. Thus, the focus from the beginning has been on creating a culture of collaboration that allows the teams from both companies to contribute their unique talents and strengths. “We are convinced that we have found the right formula and that combining Carrier and Viessmann Climate Solutions will lead to 1 + 1 > 4,” he says. “To get there, our shared purpose and values play an important role in this successful integration.” Carrier product portfolios “Companies can only be successful if they think and act globally and operate in a spirit of co-creation,” says Heim. Combining the Viessmann Climate Solutions and Carrier product portfolios creates added value for all installation partners and users. The increasing complexity of the HVAC industry is contributing to a trend toward company consolidation. “Let's be honest: in the past, you simply installed a gas boiler,” says Heim. PV installation They also offer a design tool on the Internet and even financing with the help of a partner bank Heim added: “Today, it's often about heat pumps, battery storage, photovoltaics, wall boxes and an energy management system that links everything together. It's all extremely complex. That's why we are constantly training our installers and at the same time reducing their workload." "Many of our installers don't want to climb on a roof, which is fine. We then look for facilitating a service provider that adds the PV installation to the holistic offering of our partner company.” They also offer a configuration tool on the Internet and even financing with the help of a partner bank. Climate-neutral by 2050 Data centers will also play a bigger role in the future. For example, a typical office building in Manhattan requires only three cooling units, while a data center they are currently working on requires 140. An AI chip generates seven times more heat than a conventional chip. “This market is huge, and we are determined to play an important role,” says Heim. The building sector produces 40 percent of CO2 emissions in Europe. Therefore, a transformation to renewable energies is necessary to become climate-neutral by 2050. Viessmann products and systems “For us, as a manufacturer, this means that we continue to encourage the building electrification system strongly,” says Heim. Viessmann products and systems offer installers the basis for a sustainable climate solution offering for their users. Almost all areas, from single- and multi-family houses to commercial and industrial buildings and municipal facilities, can be covered by the system portfolio. New hydraulic interface Regardless of the outdoor unit (ODU), the new components always match the indoor unit (IDU) Heim highlights three notable products as part of the Viessmann System Solution. Users can now choose between the high-efficiency, high-comfort Vitocal 250-A and the more economical Vitocal 150-A domestic air source heat pumps. Regardless of the outdoor unit (ODU), the new components always match the indoor unit (IDU). This high level of flexibility pays off for the installers in significantly shorter installation times, and users only pay for what they actually need for their heating system. The new hydraulic interface also saves time during installation. Vitocharge VX3 storage unit The Vitocharge VX3 storage unit is one of the most proven battery storage units in its class. Its maximum storage capacity of 75 kWh (5 modules of 15 kWh each) is particularly suitable for large, detached houses and apartment blocks, as well as for smaller commercial applications such as supermarkets or craft businesses. Following on from the large power classes, the smaller modules can now also be cascaded at 4.6 kVA. Flexible installation options are now available, including corner or horizontal mounting, which allow for optimal adaptation to on-site conditions.

Data centers play a pivotal role in supporting the flow of information across our digital economy. However, the transmission of large amounts of data also requires a lot of energy. Viewing data centers as potential heat sources offers an opportunity to use this otherwise wasted heat to warm nearby homes and businesses using technologies like heat pumps and heat networks. The approach will lower the environmental impact of these buildings filled with computer servers, and it will support the transition to renewable heating as we look toward net zero. Heat recovery systems Heat recovery systems are designed to facilitate the re-use of heat energy via technologies like heat pumps Heat recovery systems are designed to facilitate the re-use of heat energy via technologies like heat pumps and heat networks, says Simon Prichard, EMEA ITC Business Leader, Mitsubishi Electric, within the Living Environmental Systems division. The heat generated by data centers, usually around 30-35°C (85-90°F), is increased by heat pumps to 70-80°C (160-175°F), making it suitable for heating nearby buildings or supplying hot water. “However, when choosing which heat recovery approach to go for, it's important to take into account the data center’s size, location, and proximity to the desired reuse location,” says Simon Prichard, adding “These factors determine the most efficient method for heat recovery and distribution.” Reusing heat from data centers via heat pumps “Reusing heat from data centers through heat pumps and heat networks drives down costs by reducing the amount of heat going to waste and ultimately increasing energy efficiency,” continues Simon Prichard. However, Simon Prichard emphasizes these cost benefits must be communicated and outlined clearly to ensure stakeholders are aware. More awareness will, in turn, drive adoption forward. Wider awareness and adoption Wider awareness and adoption are already happening with plans for utilizing waste heat within London's district heating networks, notes Prichard. The scheme uses ejected heat from a data center to power heating demand for nearby homes A real-life example is Amazon’s Tallaght data center in Dublin, which is the country's first low carbon district heating network. The scheme uses ejected heat from a data center to power heating demand for nearby homes, and peak requests in winter are satisfied by dedicated heat pumps and a heat pump module. The network is estimated to reduce pollutant emissions in the South Dublin County region by nearly 1,500 tons per year. Mitsubishi Electric’s CPD-Certified Guide Mitsubishi Electric’s newly released CPD-Certified Guide aims to educate data center owners, managers and policymakers on the role heat reuse can play in decarbonizing these buildings. “It provides insight into how we can reduce the carbon footprint of these spaces by viewing them as a source of heat energy, as well as the solutions available and what needs to be considered before making the switch,” says Simon Prichard, adding “In doing so, it aims to support owners and managers in transitioning to heat recovery in their building and reducing the environmental impact of these spaces to support the United Kingdom’s wider journey towards net zero.” Communicating the benefits of heat reuse in data centers “Communicating the benefits of heat reuse in data centers can promote greater cooperation from stakeholders – whether that's owners and managers, governments, or manufacturers,” says Simon Prichard. Raising awareness of the environmental impact of data centers and the role heat recovery can play in reducing that impact can position data centers as part of the solution for a decarbonized future. Developing heat networks “Continuing to develop heat networks at the same scale as other European countries will also help make reusing this energy to heat surrounding buildings a reality and put what we see across other countries into practice in the UK,” states Simon Prichard.

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

"ABM played a critical role in helping us identify what we could be doing better—how we could be more efficient and sound from an infrastructure perspective." "Their expertise helped us hit the mark on sustainability, financial responsibility, and community impact," Union City, Indiana, Mayor Chad Spence. Overview In a small community where resources are finite, Union City, Indiana, faced the challenge of upgrading critical infrastructure while balancing financial, sustainability, and community priorities. Through a strategic partnership with ABM, the city implemented a comprehensive energy, lighting, HVAC, and infrastructure upgrade that exceeded financial, operational, and community goals—maximizing outcomes while minimizing waste. Challenges Leaky roofs and outdated systems posed risks to both the buildings and their irreplaceable contents Union City’s historic infrastructure, including a museum housed in a former railroad hotel, required urgent repairs. Leaky roofs and outdated systems posed risks to both the buildings and their irreplaceable contents. Additionally, high energy consumption—particularly at wastewater treatment facilities—placed a significant financial burden on the city’s budget, limiting opportunities for community growth and development. Key challenges Aging infrastructure in need of modernization High energy costs straining the city’s budget Preserving historic structures while improving efficiency Overcoming permitting and regulatory hurdles for renewable energy solutions An Engineering & Infrastructure Solution ABM’s industry-pioneering Engineering & Infrastructure Solutions team, led by Chris Mastrianni, Joe Boetsch, Ann Smith (LEED AP), and Erick Dustin, worked closely with Union City leadership to design a future-focused plan. Key Project Components Energy Efficiency & Sustainability: Integration of solar arrays to reduce dependency on the grid and lower operational costs Infrastructure Upgrades: Modernization of lighting, HVAC systems, and wastewater treatment facilities to improve efficiency and performance Financial Innovation: A strategic financial model that leveraged energy savings to fund additional infrastructure improvements Community Impact: Reinvesting cost savings into critical areas such as parks, streets, and sidewalks Results & Impact By thinking outside the box and leveraging innovative solutions, ABM helped Union City achieve: Significant Energy Cost Savings: Enabling reallocation of funds to community growth initiatives Improved Infrastructure Efficiency: Enhancing operational performance across city facilities Preserved Historic Structures: Protecting the city’s heritage while modernizing key assets Sustainability & Resiliency: Positioning the city for a more energy-independent future Union City Powers a Sustainable Future Union City’s successful partnership with ABM showcases how smart infrastructure investment can drive long-term sustainability, financial efficiency, and community growth. By prioritizing innovation, fiscal responsibility, and sustainability, Union City has set a precedent for how small communities can thrive through strategic energy and infrastructure improvements.

Wren is a climate subscription service that helps individuals offset their carbon footprint through monthly contributions. Users can calculate their carbon emissions using Wren’s intuitive calculator and fund various climate projects, including refrigerant destruction. Wren emphasizes transparency by providing regular updates on the impact of contributions, including data, photos, and stories. The platform aims to make climate action simple and effective, ensuring that every dollar contributes to meaningful environmental change.  About A-Gas  A‑Gas is a world pioneer in the supply and lifecycle management of refrigerants and associated products and services. Through the first-class recovery, reclamation, and repurposing processes, we capture refrigerants and fire protection gases for future re-use or safe destruction, preventing harmful release into the atmosphere. For over 30 years, A-Gas has supported clients and partners on their environmental journey by supplying lower global warming gases and actively increasing the circularity of the industries we serve, building a sustainable future.   Challenge  HCFC-22 is a potent greenhouse gas with a global warming potential (GWP) much higher than CO2 The widespread use of refrigerants like HCFC-22 (R22) presents a significant environmental challenge. HCFC-22 is a potent greenhouse gas with a global warming potential (GWP) much higher than CO2 (one molecule of R22 has a global warming impact 1,810 times that of one molecule of CO2). If not properly managed, its release would have a negative impact on the atmosphere. As these refrigerants reach the end of their lifecycle, there is an urgent need for effective solutions to prevent their emissions and minimize their environmental impact.   Solution  To address this challenge, A-Gas recovers refrigerants for reclamation or destruction at A-Gas facilities across the country. By leveraging Wren's platform to mobilize individual contributions and A-Gas' technical expertise in lifecycle refrigerant management, this partnership enabled an environmentally conscious solution for the used refrigerant. It underscores the potential for innovative partnerships that can help to further reduce emissions in the refrigerant industry through its on-site refrigerant recovery service (Rapid Recovery®), refrigerant buyback programs, and wholesale supplier reclaim program (Refri-Claim™). HCFC-22 destruction project The ACR methodology has included HCFC-22 as eligible for destruction-generated offsets since 2017 Wren and A-Gas formed a partnership to provide Wren subscribers with the opportunity to fund an HCFC-22 destruction project through the generation of A-Gas carbon credits to ensure the gas does not escape into the atmosphere. While the ACR (formerly American Carbon Registry) methodology has included HCFC-22 as eligible for destruction-generated offsets since 2017, few have completed such projects because the price of HCFC-22 is so high; it is more profitable for organizations to reclaim this product.  ACR’s methodology As such, this is one of the first HCFC-22 destruction projects utilizing ACR’s methodology. Approved by the International Civil Aviation Organization (ICAO) to provide carbon credits in its Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA), ACR is highly regarded across the world.  Results  The partnership yielded multiple environmental benefits:   Emissions Avoided: The initiative successfully avoided the release of 16,000 tons of CO2-equivalent emissions by destroying HCFC-22. This substantial elimination of greenhouse gas emissions demonstrates the effectiveness of the program.   Subscriber Engagement: Wren provided its subscribers with detailed updates on the impact of their contributions. These updates included data on the quantities of HCFC-22 destroyed and the corresponding emissions reductions. This transparency helped build trust and encouraged ongoing participation in climate action.   Educational Impact: The collaboration raised awareness about the importance of proper lifecycle refrigerant management. Wren and A-Gas educated the public on lesser-known aspects of climate change mitigation by highlighting the environmental benefits of destroying high-GWP substances.   Conclusion  This partnership enabled an environmentally conscious solution for the used refrigerant By leveraging Wren's platform to mobilize individual contributions and A-Gas' technical expertise in lifecycle refrigerant management, this partnership enabled an environmentally conscious solution for the used refrigerant. It underscores the potential for innovative partnerships that can help to further reduce emissions in the refrigerant industry.  refrigerant destruction protocols and technology "We are excited to work with A-Gas to push forward the standard of refrigerant destruction protocols and technology," said Landon Brand, CEO, of Wren. Landon Brand adds, "This is one of the most reliable and impactful project types we have found in our years of funding climate solutions, and we hope our community can keep blazing a trail to eliminate these dangerous refrigerants."

The Olsen Group, based in Boca Raton, Florida, is a national pioneer in HVAC energy optimization. Donald Olsen and his seasoned team of HVAC control specialists have been in business for two decades, integrating energy-saving solutions into over a thousand commercial and large-scale residential projects. In the process, the Olsen Group has become one of North America’s top suppliers of Verdant thermostats. Verdant devices leverage intelligent occupancy sensors and proprietary software to reduce HVAC runtimes by 45 percent on average. HVAC control integration Verdant’s effectiveness, reliability, and broad compatibility have made Verdant the energy management solution of choice for thousands of hotels and MDUs, including multifamily buildings, senior living, and student housing.  The Olsen Group has forged a productive two-way partnership with Verdant. Donald Olsen and his team have made it a priority to share data, customer feedback, and requirements with Verdant – and Verdant, in turn, has come to rely on Olsen when they need to field test a new solution. In May of 2024, Verdant reached out to Olsen for help with a new pilot program aiming to facilitate more effective HVAC control integration, easier service, and deep energy savings for MDU projects around the globe. The Challenge Commercial VRF systems have an extremely attractive set of upsides for hotel operators Inverter (VRF) system design is becoming increasingly common in hospitality settings. Commercial VRF systems have an extremely attractive set of upsides for hotel operators. They are significantly more energy efficient and quieter than traditional VTACs or PTACs; they can provide simultaneous heating and cooling to different zones for optimal guest comfort; and they allow both individual room-level setpoint control and building-level centralized management. However, the majority of VRF units cannot connect directly to a third-party smart thermostat. Because they rely on proprietary manufacturer protocols for variable speed commands and internal diagnostics, VRF units require an external control solution to facilitate bidirectional communication with Verdant thermostats. Installation and commissioning process Every additional component in a system adds complexity and opportunity for human error. In hotels, that complexity is multiplied across hundreds of rooms. “HVAC systems are installed dark for new builds, with no power running to the site,” says Donald Olsen, President and Owner of the Olsen Group. “There’s no way to test as we go. If there are any mistakes during installation, we find out about it when the lights go on after project completion.” And mistakes are nearly inevitable. Some third-party controllers have prominent dipswitches that can be easily snagged or tripped during transportation or installation, altering their configuration and causing them to fail once the system is powered. These switches are often accidentally tripped multiple times throughout the installation and commissioning process, pioneering to a never-ending cycle of errors and service calls. VRF control solutions  Adding to the issue, not all third-party control keys have the ability to retrieve and solve system error codes “Once properly configured and installed, VRF control solutions tend to be incredibly reliable,” says Olsen. “Getting them there is a real challenge, however. Accidents, human error, and repeated recalibrations can drive serious project overruns and client dissatisfaction.” Adding to the problem, not all third-party control solutions have the capability to retrieve and translate system error codes. “If the central management system isn’t getting certified manufacturer control signals from the control device, it may no longer recognize the thermostat. The system will continue to function, but it will always show up in the central manager with an error message,” warns Olsen. Airzone Aidoo Pro control solution These false error reports degrade the overall utility of the central management system, robbing operators of the ability to detect and mitigate problems proactively and requiring onsite testing to diagnose any issues. As VRF systems become the norm for hospitality projects, Verdant needed a solution to reduce the possibility of accidental misconfiguration and improve visibility into system functionality. They called on Olsen to conduct a pilot program, retrofitting sixteen VRF units in the Jacksonville Beach, FL Springhill Suites with the Airzone Aidoo Pro control solution. The Solution For the pilot, the Olsen Group outfitted each VRV unit in the loop with an Aidoo Pro controller The Jacksonville Beach Springhill Suites is a 156-room hotel with a state-of-the-art Daikin VRV rooftop chiller system. The Airzone Aidoo Pro ships preconfigured for the specific HVAC unit model, reducing the possibility for errors during initial installation. For the pilot, the Olsen Group outfitted each VRV unit in the loop with an Aidoo Pro controller. This 1:1 system design simplifies operations and troubleshooting: Any issue can be immediately traced back to a single unit, minimizing the scope and duration or repair downtime. “The Airzone Aidoo Pro offered two key upgrades as a VRV control solution,” says Olsen. “First, the dipswitches are recessed, making them much harder to trip accidentally. Second, Aidoo makes the system much easier to service. We can read error codes, run tests, and diagnose issues remotely, without ever needing to disrupt a guest’s stay.” Airzone’s expansive library This advanced remote management is enabled by Airzone’s expansive library of manufacturer protocols. “Because of our close relationship with HVAC manufacturers, Aidoo Pro can provide the proprietary control signals the central management system is expecting to see,” says Borja Fernandez, Director of OEM Solutions, Airzone. “That preserves all the features of the HVAC unit and thermostat, while also eliminating persistent false error codes. With Aidoo Pro, the central management system can function as a single-pane-of-glass HVAC monitoring and control solution for the building, as intended.” Results and Next Steps The pilot program is expanding to new builds around the globe, including projects in the UK Olsen reports that Springhill Suites is happy with their upgraded VRV system. “They have more visibility into the system and fewer services calls,” says Olsen. “When there is an issue, we can diagnose it remotely for faster resolution and less guest room downtime. It’s a much better customer experience overall.” Verdant is encouraged as well. This pilot program is expanding to several new builds around the globe, including projects in Central America, the Caribbean, the UK, and the EU. HVAC energy savings “There is a massive untapped market for energy-efficient HVAC upgrades in the Caribbean region,” says Olsen. “Energy costs there can exceed a dollar per kilowatt hour. Cost-effective devices like Verdant thermostats and the Airzone Aidoo Pro pay for themselves very easily in that scenario.” Verdant and the Olsen Group have built global brands by helping commercial properties realize significant HVAC energy savings. Through the Airzone Aidoo Pro pilot program, they are continuing to innovate, enabling reliable integration and enterprise-grade control on highly efficient VRF units. “The demand for commercial VRF control is definitely there,” says Olsen. “With Verdant and Airzone, we can deliver it with ease.”

With 53 men on the Jacksonville Jaguars roster, practicing 5 to 6 days per week for 10 to 12 hours a day, the demand for hot water must be enormous. As the choice for the team’s practice facility’s hot water storage and water heating capabilities, we happen to have the deets. How about 1,880 gallons of storage capacity and 2,400,000 btu/hr heating the water?  Miller Electric Center The Miller Electric Center is a new state-of-the-art practice facility in downtown Jacksonville that serves as the Jaguars’ football operations headquarters. The 120 million dollar facility is 125,000 square feet and includes locker rooms, training and medical facilities, office space, and a draft room. It also features two full-size grass practice fields and one indoor field, along with shaded public viewing stands, concession areas, and a team store.  Big men need big spaces  Armor’s SMART TOUCH operating control makes adjusting parameters and troubleshooting a breeze Luckily, Lochinvar’s Armor Condensing water heaters are up for the job. The Armor’s stainless steel heat exchanger delivers hot water at 98% thermal efficiency and modulates at a 10:1 turndown ratio. That means the units can fire as low as 10% of their total capability and modulate up to 100% when the demand is greatest. The Jag’s facility has 3 of the AWH0800NPM units installed providing the ability to cascade which ensures the units operate with equal runtime and extends the life of the heaters. The Armor’s SMART TOUCH operating control makes adjusting parameters and troubleshooting a breeze – which is nice in Florida. Lock-Temp Round Jacketed Storage Tank With a proven storage vessel like the Lock-Temp Round Jacketed Storage Tank, making sure the stored hot water is ready for delivery is a given. These tanks have the exclusive Lock-Temp baffle that keeps water evenly stratified and the 80% draw factor allows almost the entire capacity to be used at the designated temperature.  installation and commission With the help of a local manufacturers’ rep firm, Harry Warren, the installing contractor, Touchton Plumbing out of Jacksonville reported that the whole experience went off without a hitch. “The installation went extremely well, and the units have been working without fail through the first year of the facility being in use,” said Parker Touchton, project manager. The equipment was installed and commissioned according to schedule and is said to be performing as promised and at the end of a 12-hour practice, there’s no room for disappointment. 

In facilities with high volumes of foot traffic, the constant opening and closing of doors not only lets in chilly air but can cause heating problems for the entire building. Cold drafts bring the temperatures down, so while main rooms benefit from the warmth of the building’s primary heating system, many other areas are left to deal with the arctic side effects. Vestibules, lobbies, entranceways, and hallways are frequently populated, so it’s imperative that facilities hunker down and counteract the cold drafts left behind by those entering and leaving buildings.  Opt for electric ceiling heaters To help neutralize these blustery winds, facilities should consider fan-forced wall heaters that provide continuous comfort through optimized airflow. Such units are ideal for entryways and other spaces where short bursts of heat are needed – providing a tremendous advantage over gentle heating sources that may not be powerful enough to provide the desired amount of warmth. However, if wall and floor space is minimal, facilities can instead opt for electric ceiling heaters. Mounted flat or recessed to the ceiling, these heaters are ideal not only for entryways but also in conference rooms, waiting areas, bathrooms, and lobbies. No matter the case, both products move heated air with a fan to quickly heat the room from the wall or ceiling. Once the heater turns on, the air is moved over a heating element and circulated into the space, making certain that residents are met with warmth and comfort from the time they enter the building until they leave.  Specialized heating units Specialized heating units are designed to stop drafts in their tracks before they laid throughout a building Whether it’s through vents, unsealed windows or cracks and crevices in the building’s foundation, cold air will creep into facilities any way it can. This cool air can make indoor temperatures uncomfortable for occupants and reduce the overall heating efficiency of the facility. Specialized heating units are designed to stop drafts in their tracks before they spread throughout a building.  Fan-forced wall and ceiling heaters with an automatic delay feature eliminate cold drafts on start-up and discharge residual heat from the heater body during the shutdown, helping attack drafts at their source, making the best use of available heat and prolonging the life of the heater. Equipped with integrated thermostats To maintain desirable comfort levels, facilities should consider fan-forced wall or ceiling heaters equipped with integrated thermostats or BMS connections for easy adjustment of room temperatures. A hotel’s vestibule, for example, may experience high amounts of foot traffic during check-in and check-out hours. Because fewer people are coming and going outside of these times, the adjustable thermostat feature allows facilities to alter their heating output needs to ensure heat is not misused and temperatures remain comfortable. For commercial fan-forced wall heaters with striking designs and contemporary looks, Berko® and QMark® offer units to match any room’s décor while supplying an appropriate amount of warmth no matter the time of year. Safety First Fan-forced wall or ceiling heaters are built with easily accessible power on/off switches for safety Safety and style go hand-in-hand. While selecting a heater that fits a building’s esthetic is important, opting for a high-quality product that protects against common safety risks should be a top-of-mind priority. Fan-forced wall or ceiling heaters are built with easily accessible power on/off switches for added safety during maintenance. Tamper-proof plugs for thermostat holes prevent unwanted changes to the temperature and keep children and pets from getting into places they shouldn’t.  All fan-forced units also come with thermal overheat protectors that disconnect power in the event of accidental dust or debris blockages to mitigate the risk of injury. Additionally, heaters that include permanently lubricated and enclosed fan motors are shown to have longer lives, require less maintenance and gently administer heat throughout a space. Keep in mind that some heaters are noisier than others, so make sure to choose one powerful enough to negate drafts but quiet enough to prevent disturbances from interrupting daily activities.  Maintaining Warmth and Comfort Drafts bring cold air and a lasting chill into heated spaces every time a door opens, especially during the colder months. To offset the frigidness, consider installing a fan-forced wall or ceiling heater to regain suitable levels of warmth and comfort for all building occupants. Berko and QMark’s commercial fan-forced wall and ceiling heaters provide the strongest, safest sources of heat for those chilly spaces.

Nearly Bergamo, Italy, there is a weather station that collects meteorological data and monitors air quality. Its operation requires professional equipment that, however, works without a permanent power supply or the presence of staff. Such conditions put the equipment and other assets at risk. In fact, the station had already suffered from several intrusion attempts and needed a security system to be put in place. Challenge Protect a remote object without a permanent power supply Like many remote objects, the weather station does not have a permanent power supply and cannot afford a full-time presence of staff members on the site. After several intrusion attempts, the client needed to secure an area of 600 square meters, prevent equipment theft, and put an end to the damage made to the agricultural produce growing on the site. They looked for a professional security system that could operate outdoors without mains power and was easy to manage remotely.  Solution Wireless outdoor security system with flexible power options and remote control The implemented security system consists of 11 Ajax devices, coupled with a third-party solar panel, battery, and case In response to the challenge, Von Wunster Next s.r.l. configured a solution for securing the object that has no permanent power source or staff on-site but has extensive sun exposure. The implemented security system consists of 11 Ajax devices, coupled with a third-party solar panel, battery, and case. At the core of the system, there is a Hub 2 (2G) Jeweller control panel with a low-voltage PSU 6V. The latter allows the hub to operate from an external 7 A h battery for years. The battery, in turn, is charged via the 25 W solar panel (10 A). If the external power supply fails, the hub switches to a built-in battery and continues to protect the object for up to 16 hours or even 60 hours if the Battery Power Saver feature is enabled. The client and central monitoring station of the security company instantly receive a notification about the power issue to be fixed. The company has enough time to get to the remote object for restoring power without compromising its security. A SIM card (2G) ensures connection with the network, so Von Wunster Next s.r.l. won’t miss a thing. StreetSiren DoubleDeck Other elements of the security system are wireless outdoor Ajax devices that operate with pre-installed batteries for up to 3 years. Several MotionCam Outdoor Jeweller cover the perimeter and detect movement within seconds. The device’s photo-by-alarm feature allows minimizing expensive patrol dispatches to false alarms and gives the client peace of mind. StreetSiren DoubleDeck activates the sound of up to 113 dB and bright LED indicators in response to an alarm to deter and expose intruders. Communication with the wireless devices is provided via Ajax proprietary radio protocols Jeweler and Wings at a distance of up to 2,000 m. It’s perfect for covering large areas such as that of the station. Ajax SpaceControl Jeweller key fobs Dealing with the security system is as easy as it gets for both the client and the security company The client can control security modes effortlessly. There are four end users with different rights, and they can manage the system in the Ajax app on their phones and with wireless Ajax SpaceControl Jeweller key fobs. Von Wunster Next s.r.l., which installed the system and conducts monitoring, can track the devices’ status and take care of their configuration and maintenance remotely in the majority of cases.  Dealing with the security system is as easy as it gets for both the client and the security company. All the devices are either weather-resistant or reliably hidden in the case to withstand the impacts of the environment. Constant exposure to rain or sun does not affect the security system. Why Ajax Flexible power supply options. Ajax's product portfolio includes PSUs designed to connect the system to a low-voltage power supply even when no permanent power source is available. Wireless Ajax devices operate with pre-installed batteries for up to 3 years. Visual alarm verification. With photo verification, system users and monitoring company operators can promptly verify whether an alarm is real and save costs on patrol dispatches. It is a particularly important feature for remote objects. Remote system management. The system can be managed, configured, and maintained through Ajax apps with no people present on-site, which is a cost-effective solution for a remote object. Products Hub 2 (2G) Jeweller - Security system control panel with support for photo verification MotionCam Outdoor Jeweller - Wireless outdoor motion detector with a photo camera to verify alarms 6V PSU for Hub 2/Hub 2 Plus/ReX 2 - Power supply unit for operation of the device from portable battery StreetSiren DoubleDeck Jeweller - Wireless outdoor siren with a clip lock for a branded faceplate Ajax SpaceControl Jeweller - A key fob for controlling security modes

Installing HVAC equipment is not as simple as plugging in an appliance. Installers often face many hurdles, including complex system design, space constraints, accurate sizing and load calculation, and proper ductwork installation. But what are we forgetting? We asked our Expert Panel Roundtable: What is the most overlooked factor when installing HVAC systems?

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