Efficiency

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

In the face of rising energy costs and stringent environmental regulations, industries are increasingly exploring innovative solutions to maintain operational efficiency while reducing their carbon footprint. In the thermal management space, especially for industrial applications, one of the most practical solutions is hybrid cooling—an approach that, while not entirely new to the industry, is being refined and adapted to achieve more significant energy savings, reduce operational costs, and minimize environmental impact. Understanding Hybrid Cooling Free cooling, or passive cooling, harnesses cooler ambient air to dissipate heat from inside industrial enclosures Hybrid cooling combines two distinct methods—free cooling and active cooling—into a unified system designed to optimize energy efficiency. Free cooling, or passive cooling, harnesses cooler ambient air to dissipate heat from inside industrial enclosures without relying on large energy-consuming entities, like a compressor. Active cooling, on the other hand, employs a conventional refrigerant cycle utilizing a compressor to manage internal enclosure temperatures actively. At the heart of hybrid cooling is the intelligent integration of these two approaches. Typically, the system prioritizes free cooling whenever ambient conditions permit, thus reducing the need for energy-intensive compressor operation. Active cooling segment When temperatures rise or cooling demand escalates beyond the capacity of passive cooling alone, the active cooling component engages seamlessly, maintaining optimal operating conditions within the enclosure. In hybrid cooling systems, passive cooling is implemented using an exchanger filled with refrigerant. This refrigerant remains in a liquid state at the exchanger's base, absorbing heat from the hot enclosure air and boiling upwards. Cooler external ambient air then condenses the refrigerant, cycling it back down. This process passively dissipates heat, leveraging environmental conditions to minimize energy consumption. The active cooling segment uses a compressor, which utilizes the same refrigeration cycle mentioned here. Advantages of Hybrid Cooling Systems The benefits of hybrid cooling in industrial settings extend well beyond basic energy savings The benefits of hybrid cooling in industrial settings extend well beyond basic energy savings. By combining passive and active cooling, systems like Pfannenberg's DHS Hybrid Series provide built-in redundancy. This ensures operational continuity even if one system component experiences downtime. For instance, if the compressor in the active cooling segment were to fail, the passive cooling system could continue providing partial cooling. This feature of hybrid cooling systems reduces system downtime and safeguards critical operations. Hybrid cooling solutions are especially beneficial in environments characterized by fluctuating cooling demands or variable ambient temperatures. Benefiting substantially from passive cooling Facilities operating in cooler climates or those maintaining climate-controlled environments are particularly suited to hybrid systems. A beverage manufacturing plant, for example, may have shifts running at partial capacity overnight, generating less heat and thus benefiting substantially from passive cooling alone during these periods. This adaptability allows hybrid cooling systems to optimize energy consumption effectively, translating into significant operational savings and sustainability benefits over time. Addressing Modern Industrial Challenges Hybrid cooling addresses several contemporary industrial challenges, such as energy efficiency Hybrid cooling addresses several contemporary industrial challenges, such as energy efficiency, carbon emissions and sustainability, and equipment reliability. The ideal hybrid cooling solution significantly reduces energy consumption compared to conventional cooling solutions while adapting to shifting environmental needs. This intelligent operation ensures the active cooling system’s compressor runs less frequently, not only lowering energy bills but extending the system’s component lifespan, resulting in fewer maintenance needs and a higher system life expectancy. Pfannenberg’s DHS Hybrid Series When it comes to sustainability and emissions, some hybrid cooling systems, like Pfannenberg’s DHS Hybrid Series, utilizes R-513A or other lower GWP refrigerants, compliant with upcoming environmental regulations due to its lower Global Warming Potential (GWP). This makes hybrid cooling not only an energy-efficient but also an environmentally conscious choice, as systems align with increasingly stringent climate policies and sustainability goals. Future of Hybrid Cooling Technologies Hybrid cooling systems are likely to evolve with even greater emphasis on reducing energy usage As global industries increasingly prioritize sustainability and energy efficiency, hybrid cooling technologies are poised for substantial growth. Companies like Pfannenberg, committed to "Protecting People, Machines, and the Environment," are at the forefront of developing solutions that balance performance with environmental responsibility. Looking forward, hybrid cooling systems are likely to evolve with even greater emphasis on reducing energy usage, integrating smarter controls, and adhering to stricter environmental standards. Modern hybrid cooling solutions are moving away from complex and costly components, favoring straightforward designs that rely on standard compressors activated only when passive cooling is insufficient. This simplicity enhances system reliability, reduces maintenance costs, and ensures minimal downtime-key factors for industries seeking operational continuity. Distinctive interpretation of hybrid cooling Variable-speed fans are increasingly being used to optimize performance, further improving system efficiency and adaptability to varying cooling demands. The ease of maintenance and repair, enabled by easily replaceable components, is a critical consideration that supports ongoing industrial productivity. Variable-speed fans are increasingly being used to optimize version, further improving system efficiency Pfannenberg's DHS Hybrid Series serves as a forward-looking example of how industrial thermal management can evolve, offering a distinctive interpretation of hybrid cooling that balances proven engineering principles with a commitment to sustainability.  As environmental regulations continue to tighten, innovative cooling solutions like hybrid systems will become not just merely advantageous but essential for responsible and efficient industrial operation. New standard for future developments Hybrid cooling systems offer industries a practical, efficient, and environmentally friendly solution to thermal management challenges. By intelligently combining free cooling and active cooling, these systems not only reduce energy consumption and carbon emissions but also enhance operational reliability while reducing overall lifecycle costs, setting a new standard for future developments in industrial thermal management.

Situated just nine miles south of Edinburgh, Rosslyn Castle is a true hidden gem among Scotland’s many historic sites. Though not as widely known as the capital’s fortress, Rosslyn Castle is a stunning sight all the same, offering panoramic views over the River Esk below from its promontory on the cliffs of Roslin Glen. Fortifications have stood on the site since the 14th century, and the stronghold has survived numerous fires and military campaigns over the centuries, though today the castle serves an altogether different purpose. Following a period of restoration instigated by the Earl and Countess of Rosslyn, the fortress’ primary function changed over to that of holiday accommodation in 1985. Heating Up History Heating was set to be provided by six ASHP systems, which would be located in the second level After nearly 40 years serving holidaymakers, the site’s owners decided that another restoration project would be necessary in order to successfully bring the Category A listed building into the 21st century. Commencing in 2022, the ambitious £4 million repair and restoration programme, which would come to be recognized with a GOLD award from the Scottish Design Group, planned to fit the castle’s great hall and tower with a permanent roof for the first time since 1650, while also ensuring that the entire site was Net Zero ready. Heating was set to be provided by six air source heat pump (ASHP) systems, which would be located in the second level of the castle’s vaults. This would help reduce the impact of any noise within both the castle and the glen below, while the thermal mass of the vaults would help maintain efficiency during cold weather. Building’s heat and hot water consumption James Cameron, Associate Director of electrical consultants Harley Haddow, explained: “The installation of six ASHPs would allow the site to transition from fossil fuels to entirely renewable means, with the inclusion of four large thermal stores helping to maximize efficiency and provide additional resilience." “This was estimated to reduce the building’s heat and hot water consumption by 67% compared to the previous system, saving over 17 tonnes of CO2 every year. We believe that this may be the oldest building in the world using ASHPs.” Navigating the Past Heat and hot water was set to be distributed around the building via a combination of UFH and radiator circuits Heat and hot water was set to be distributed around the building via a combination of underfloor heating (UFH) and radiator circuits. However, working within the confines of such a historic building would naturally invite its own challenges that required careful consideration, which is where REHAU was called upon to assist with the specification and delivery of the heating system. Scott McDonald, Area Sales Manager at REHAU, explained: “From the moment we were brought on board, it was apparent that this was going to be a project with an extremely unique set of challenges. Fitting a heritage site with a modern heating system always requires a great deal of planning, and I don’t think any site exemplifies this more than Rosslyn Castle. However, through a combination of our own technical expertise and that of Harley Haddow, we were able to come up with an ingenious solution.” Benefit from energy-efficient heating REHAU’s UFH would be selected for its ability to evenly heat the space, which was a crucial consideration for large open areas such as Rosslyn Castle’s great hall.  Moreover, the use of an UFH system would also allow the building to benefit from energy-efficient heating without compromising its historic aesthetic. The installation would be completed using a combination of diffusion plates and a screed rail system, depending on the available space within individual rooms of the castle. REHAU diffusion plate system and pipework The installers used a unique, eco-friendly, recycled glass fiber Geocell insulation base for the screed rail system To install the former, the original oak floorboards were carefully lifted, labeled, and stored while the REHAU diffusion plate system and pipework were fitted in the castle’s rooms and hallways, with the floorboards attentively put back in place afterwards. In the great hall, the installers used a unique, eco-friendly, recycled glass fiber Geocell insulation base for the screed rail system, which was covered with a mesh grid to cradle REHAU’s UFH pipework within the finished floor. Pipework’s innate flexibility For the radiator circuits, the castle’s historic walls and floors provided minimal room for maneuver, while minimizing damage to the listed building’s fabric was also critical. Here, REHAU’s RAUTITAN MLCP would prove paramount to overcoming this challenge while still ensuring a high-quality installation. The pipework’s innate flexibility would allow it to be easily bent by hand into the required shape and installed within the building’s narrow channels. RAUTITAN’s signature lack of O-rings RAUTITAN’s signature lack of O-rings also guaranteed that the pipework would remain leak-proof once installed RAUTITAN’s proven compression sleeve jointing system also negated the need for any hot works that would have posed a threat to the building’s fabric, and would have also been difficult to complete in the space provided.  Lastly, RAUTITAN’s signature lack of O-rings also guaranteed that the pipework would remain leak-proof once installed, offering maximum peace of mind to both installers, Lothian Heating, and the castle’s owners. Castle’s outdated heating system Angus Liston, Director at Lothian Heating Services Ltd, said: “Getting a building such as Rosslyn Castle Net Zero ready is no mean feat, but has been made possible through the hard work and collaboration of REHAU, Harley Haddow, and our own experienced team, led by Scott Clouston." "Overhauling the castle’s outdated heating system was a key element in the owners’ latest restoration project, and has gone a long way to providing the site with a new lease of life, preserving this historic building for a whole new generation of visitors to enjoy.”

The data center market has shown robust growth over the past five years, with significant increases in capacity and electricity usage. According to the International Energy Agency (IEA), global data center electricity consumption was approximately 460 TWh in 2022, and it is projected to rise to over 1,000 TWh by 2026. This growth is driven by the increasing demand for digital services and the expansion of artificial intelligence (AI) workloads. In 2025, the total capacity demand for data centers is expected to reach 82 gigawatts (GW), with AI workloads accounting for 44 GW and non-AI workloads for 38 GW. By 2030, this demand is projected to increase to 219 GW, with AI workloads making up 156 GW. This significant growth underscores the importance of sustainable practices in the data center industry. Alternative Off-Grid Power Sources To meet the growing energy demands, data centers are increasingly turning to alternative off-grid power sources. These include solar power, wind turbines, micro-hydro power, and biogas generators. These renewable energy sources not only reduce the carbon footprint of data centers but also enhance their resilience by providing reliable power in remote locations.  Green hydrogen, produced by electrolysis using renewable energy, also offers a sustainable alternative to traditional cooling methods, with the potential to significantly reduce greenhouse gas emissions. Continued Compute Growth and Liquid Cooling Nvidia's use of direct-to-chip liquid cooling and closed-loop systems has shown a 300x improvement The rapid growth in compute power, particularly with the introduction of platforms like Nvidia's NVL-576 600 kW, has significant implications for data center cooling.  This platform, designed for high-performance AI workloads, requires advanced cooling solutions to manage the heat generated by such dense compute environments. Nvidia's use of direct-to-chip liquid cooling and closed-loop systems has shown a 300x improvement in cooling efficiency. Google's fifth-generation cooling distribution unit (CDU), known as Project Deschutes, is another example of innovation in this space. This CDU sidecar power rack supports up to 1 MW per rack, leveraging high-voltage DC power distribution to enhance efficiency and cooling capacity. Energy-Efficient Cooling Technologies Energy-efficient cooling technologies are critical for the sustainable operation of data centers. Some of the most promising technologies include: Direct-to-Chip Liquid Cooling: This method involves applying liquid coolants directly to the processors, providing superior heat dissipation and enabling servers to operate at optimal performance levels. Hybrid Rear-Door Heat Exchangers: These systems combine air and liquid cooling to manage heat more efficiently, particularly in high-density rack environments. Heat Reuse The elevated temperatures made by liquid cooling can also be harnessed in industrial processes Liquid cooling provides an additional opportunity to reduce energy consumption while enabling data centers to become contributors to community energy systems. Unlike traditional air cooling, which disperses heat into the atmosphere, liquid cooling captures heat more effectively, allowing the heat to be repurposed for the heating needs of nearby residential or commercial buildings. Heat pumps can be employed to raise the temperature of the excess heat to the temperature required by heating systems, resulting in greater energy efficiency. The elevated temperatures produced by liquid cooling can also be harnessed in industrial processes that require specific heat levels, such as pasteurization, drying or chemical processing. By utilizing this heat, industries can reduce their reliance on external energy sources, which in turn lowers operational costs and emissions. However, most areas in the U.S. lack the infrastructure to support district heating. Significant investment is required to develop the infrastructure needed to transport and utilize the heat, such as pipelines for district heating or retrofitting industrial processes. Depending on the region, there may also be legal or regulatory barriers to overcome. Policy and Community Engagement There is strong support for AI growth, with alliances involving companies like OpenAI and Meta Within the current U.S. administration, there is strong support for AI development, with partnerships involving companies like OpenAI and Meta. OpenAI, Meta, SoftBank and Oracle have joined forces for the Stargate Project, which aims to build AI data centers in the U.S. This project includes significant investments to create infrastructure that supports AI development. The Trump administration has identified 16 sites on federal land for the development of AI data centers. These centers are intended to provide the necessary processing capacity for machine learning, cloud storage, and AI systems. Heat reuse offers a powerful tool for sustainability and community engagement. By capturing and repurposing the waste heat, data centers can significantly reduce their environmental impact while providing tangible benefits to surrounding communities and industries. This approach not only supports decarbonization efforts but also fosters stronger ties between data centers and the communities they serve, creating a more sustainable and resilient future. Benefits and integration of data centers  Data centers support local economies by creating jobs, providing reliable internet services Educating the community about the benefits of data centers is crucial to ensure the successful integration of data centers into local communities. Data centers support local economies by creating jobs, providing reliable internet services, and enabling technological advancements that improve quality of life.  By highlighting these benefits, data centers can build stronger community support and enhance their social license to operate. The effort should combine outreach with online educational initiatives, collaborations with industry, academia, NGOs and multiple sources of in-the-field insight. Conclusion The data center market is poised for continued growth, driven by advancements in technology and increasing demand for digital services. By focusing on sustainability, heat reuse, and energy-efficient cooling technologies, the industry can meet this demand while minimizing its environmental impact. Engaging with communities and educating them about the benefits of data centers will further support the sustainable growth of this vital industry.

Heating, ventilation, and air conditioning (HVAC) systems aren’t just essential to controlling temperatures and air quality inside buildings — they could contribute towards massive global savings. An ‘Efficient cooling scenario’ proposed by the International Energy Agency (IEA) suggests that doubling the energy efficiency of air conditioning could reduce investment and running costs in these systems by nearly $3 trillion by 2050. Here, Chris Johnson, Managing Director of bearing specialist SMB Bearings, explains how one way to make HVAC systems more efficient is through the better use of advanced sealed bearings. Integrity of components HVAC systems operate in harsh environments where dust, moisture, and contamination threaten the integrity of components.  Those components include bearings, which are essential in the fans, motors, and compressors used in commercial air handling units, industrial refrigeration systems, and large-scale ventilation systems. These systems are commonly found in factories, hospitals, and office buildings. Safety risks as overheating components Eventually, the motor will struggle and consume more energy to maintain its performance Take an HVAC system in a large commercial building, for example. If bearings begin to fail, then friction increases, which causes components to overheat. Over time, the excessive heat can lead to the misalignment of shafts and fans. As this misalignment worsens, vibrations can increase and place further stress on the system. Eventually, the motor will struggle and consume more energy to maintain its performance. If left unchecked, the motor can seize entirely, halting airflow and disrupting climate control. These issues not only result in higher energy costs, but can present safety risks as overheating components can lead to fire hazards or breakdowns. Reliability of HVAC systems For example, during heat waves in Ghaziabad, India, extreme temperatures have caused HVAC systems to overheat and ignite, leading to a rise in air conditioner fires. According to The Times of India, many of these fires are due to poor maintenance, overloaded circuits, and aging components. Fortunately, sealed bearings — bearings enclosed with seals or shields to prevent contamination and retain lubrication — can address some of these challenges. They not only enhance the reliability of HVAC systems, but can also reduce the frequency of maintenance interventions. This leads to an overall lower total cost of ownership (TCO). Optimising bearing procurement using TCO A common mistake when procuring bearings for HVAC systems is to focus solely on the initial cost A common mistake when procuring bearings for HVAC systems is to focus solely on the initial cost. This can be misleading, as bearings with a lower upfront price could result in higher maintenance requirements and replacement costs over time. Instead, buyers should adopt a TCO approach that considers the entire lifecycle costs of the bearing, including purchase price, installation, maintenance, and potential downtime. Let’s use the example of gearboxes and geared motors, which are integral to many HVAC systems and provide the necessary torque and speed control for various components. Bearings within these systems ensure smooth operation, reduce frictional losses, and increase the HVAC system’s overall efficiency. integrity of lubricants and protecting internal components Sealed bearings are especially suited to gearboxes, because they prevent the ingress of lubricants and contaminants that would otherwise compromise the gearbox’s performance. Sealed bearings contribute to the longevity and reliability of gearboxes and geared motors By maintaining the integrity of lubricants and protecting internal components, sealed bearings contribute to the longevity and reliability of gearboxes and geared motors, and ultimately improve the performance of the overall system. Sealed bearings also offer significant cost savings over time. Their ability to resist contamination reduces the need for frequent lubrication and maintenance, thereby extending service life and enhancing system reliability. Sealed bearings in HVAC systems Lubrication is critical for sealed bearings in HVAC systems as it minimizes friction, dissipates heat, and prevents wear. Sealed bearings can come pre-lubricated, in order to require minimal maintenance. However, in demanding environments or high-load applications, periodic relubrication may be necessary to maintain the bearing’s performance and extend its service life. Ensuring safety and compliance in explosive environments Certain HVAC applications operate in environments where explosive gases or dust are present Certain HVAC applications operate in environments where explosive gases or dust are present. In such settings, it is paramount to ensure that all components meet safety and compliance standards. Bearings used in these environments must meet stringent standards, like ATEX 2014/34/EU, a European Union regulation for the use of equipment and protective systems in potentially explosive atmospheres (ATEX) where a mixture of air, gases, vapors, mists, or dusts can ignite under certain operating conditions. There is also the international IEC System for Certification to Standards Relating to Equipment for Use in Explosive Atmospheres (IECEx). Choosing the right bearings Selecting the appropriate bearings for HVAC systems involves considering factors such as load capacity, speed, operating environment, and maintenance requirements. Sealed bearings for HVAC systems come in three main types: contact seals, non-contact seals, and metal shields. Selecting the appropriate seal type ensures HVAC system efficiency, longevity, and reliability Contact seals provide superior protection against dust, moisture, and contaminants; but they can also increase friction and reduce speed. Non-contact seals offer a balance with good contamination protection and minimal impact on speed, which makes them ideal for high-speed HVAC components. Meanwhile, metal shields prevent larger particles from entering, and are suitable for applications where speed and temperature resistance are critical. Selecting the appropriate seal type ensures HVAC system efficiency, longevity, and reliability. IEA’s Efficient cooling scenario The IEA’s ‘Efficient cooling scenario’ highlights the need for more efficient air conditioning solutions to prevent excessive electricity demand growth. It projects that doubling the energy efficiency of air conditioning by 2050 would prevent global electricity demand from growing by 1,300 gigawatts and save up to 2.9 trillion USD. High-performance components, like sealed bearings, already play a vital role in achieving these efficiency gains. By preventing contamination, minimizing maintenance and improving reliability, bearings can support the global drive for energy savings.

This year’s Clean Air Day falls on Friday the 19th June.  In its eighth year, Clean Air Day has become the UK’s largest campaign dedicated to raising awareness of air pollution and its impacts on health and the environment. It also encourages individuals and organizations to take practical steps to reduce pollution and protect public health, both inside and outside buildings. Air quality should be a concern for everyone, but certain sections of society are disproportionally impacted than others, children in particular, which is why this year on Clean Air Day we are urging policymakers, educators, and building professionals to prioritize clean air in and around our schools and homes. Children Face a Greater Risk Children are particularly susceptible to the harmful effects of air pollution Children are particularly susceptible to the harmful effects of air pollution. Unlike adults, their lungs and immune systems are still developing, and their smaller body size means they breathe in more air relative to their body weight. This increased inhalation rate, coupled with greater time spent outdoors—especially during commutes to and from school—results in elevated exposure to pollutants like nitrogen dioxide (NO₂) and particulate matter (PM). Serious health consequences for children 15,000 children under the age of five were admitted to London hospitals with breathing difficulties in 2023 The effects of breathing in polluted air can have serious consequences for children.  Clean air campaign group Mums for Lungs revealed that 15,000 children under the age of five were admitted to London hospitals with breathing difficulties in 2023. Although it’s not possible to determine how many of the admissions are directly linked to air pollution, a study by the University of Dundee found that children are significantly more likely than adults to be hospitalized due to respiratory issues caused by air pollution. Mental effects of air pollution Air pollution is not only linked to physical ailments such as asthma and bronchitis but also to decreased attentiveness and slower cognitive response times in classrooms. What's also very concerning is that the damage to children’s lungs is often irreversible. The Royal College of Paediatrics and Child Health has called for "bold but necessary policies" to protect young people and improve air quality, particularly around schools and hospitals. Unfortunately, many new schools are being built in areas that exceed World Health Organization air pollution limits. Between 2017 and 2025, 147 new schools in England—86% of all planned or constructed—will be in such zones. Surprisingly, there is no legal obligation to consider air quality in school planning, despite children spending up to 35 hours a week in these environments. Identifying the Invisible Threat Indoors However, indoor air pollution is an equally serious, yet often overlooked, issue When we talk about air pollution, the conversation often focuses on outdoor sources like vehicle emissions. However, indoor air pollution is an equally serious, yet often overlooked, issue—especially in schools and homes. Recent research from Birmingham University at a Cardiff high school found that particulate matter concentrations inside classrooms were influenced not just by outdoor pollution, but also by indoor activities, classroom location, and even flooring materials. In homes, sources of indoor pollution include cleaning chemicals, cooking emissions, and even everyday items like candles or air fresheners that release volatile organic compounds (VOCs). Without adequate ventilation, these pollutants accumulate, leading to poor indoor air quality (IAQ) that can affect children's health and ability to learn or sleep well. Schools, which typically include a variety of spaces such as classrooms, kitchens, sports halls, and even swimming pools, present their own set of ventilation challenges. Each of these environments requires specific ventilation solutions to ensure a safe and healthy atmosphere. The Role of Ventilation in Healthier Environments Effective ventilation is one of the most important tools we have in the fight against indoor air pollution. Properly specified and maintained ventilation systems can significantly improve IAQ by removing pollutants and regulating CO₂ levels. In classrooms, balanced mechanical ventilation with heat recovery—such as the Nuaire XBOXER XBC range—is ideal. These systems are capable of ventilating multiple rooms and come equipped with filters to remove incoming pollutants, offering both health and energy efficiency benefits. School ventilation challenges challenges Sports halls present different challenges, particularly with high CO₂ levels and odours Sports halls present different challenges, particularly with high CO₂ levels and odours. Packaged Air Handling Units are well-suited to these environments, offering high-volume air movement and the option of occupancy or CO₂ sensors to control the system efficiently based on use. For indoor swimming pools, where humidity and chlorine levels are high, Air Handling Units are also ideal, although will need to be corrosion-resistant. Meanwhile, in school toilets—frequent sources of unpleasant odours and bacteria—twin fan technology ensures continuous extraction, even if one fan fails. Kitchens benefit from bifurcated fans, which position the motor outside the airstream to prevent grease build-up and reduce maintenance needs. These tailored solutions demonstrate how smart ventilation can enhance IAQ across varied school settings. A Call to Action This Clean Air Day Clean Air Day is more than a date on the calendar—it’s a call to action. Road transport is a key contributor to NO₂ emissions, and efforts to promote walking, cycling, and public transport are important. However, tackling indoor air pollution is equally critical. We must recognize that protecting children from air pollution is not optional; it is a moral and public health imperative. No child should have to breathe polluted air simply to learn, play, or sleep. By investing in targeted ventilation strategies and supporting evidence-based policy, we can give every child the clean air they deserve—and build a healthier future for all.

Homes should provide a healthy sanctuary for their occupants, and HVAC can achieve that goal by providing better air quality and a constant flow of fresh and filtered air. However, better air quality comes at a cost. “We have a lot of solutions to improve air quality, but we have to be able to communicate the value of indoor air quality (IAQ) to get people to pay the added cost,” says Panasonic’s IAQ expert, Ken Nelson. “Anything that raises the price of a house diminishes the sale.” Value of indoor air quality The value of indoor air quality is not in dispute but getting that message across is a challenge For example, a system that ensures indoor air quality would increase the price of a new house, but the builder or realtor would likely be unable to articulate the value of the system to a new homebuyer.  A system to ensure better air quality would be invisible to a potential homeowner, and the value would not be obvious unless it is carefully communicated. The value of indoor air quality is not in dispute but getting that message across is a challenge. Solution to improve air quality “The challenge is that any solution to improve air quality has to be sold, and it’s a function of understanding the balance of cost, price and value,” says Nelson. “It’s a sellable concept to the buyer, but you have to be able to explain it, bring it up, put it out there. Whose job is it to make sure everybody in the purchase chain has an understanding of air quality?” As group sales manager of ventilation at Panasonic Eco Systems, North America, Nelson has a stake in promoting a higher level of communication about the value of indoor air quality. He also sells a solution to meet the challenge, a system that can also help homebuilders stand out in the real estate market. Panasonic OASYS HVAC and indoor air system Panasonic OASYS HVAC and indoor air plan ensures a even indoor temperature throughout the home Designed for highly airtight and insulated houses, the Panasonic OASYS HVAC and indoor air system ensures consistent indoor temperature throughout the home.  The system combines a ductless mini-split air conditioner with a continuous heat exchanger and an energy recovery ventilator (ERV), which exchanges stale indoor air with fresh outdoor air while also transferring heat and moisture between the two air streams. The ERV reduces the load on the air conditioner and suppresses PM2.5 (fine inhalable particles). The OASYS system takes in fresh outdoor air, filters it, tempers it to the homeowner’s temperature setting, and then circulates it constantly throughout the house for approximately four air changes per hour while continuously monitoring the air for comfort. DC motor-driven ventilation fans Pushing air through six-inch ducts throughout the house are small, DC motor-driven ventilation fans, which are quieter and use less energy. Constant air flow controls humidity throughout the house with perpetual air movement and ventilation to help prevent excess moisture and mold. Smaller fans drive air throughout the house, and perhaps 25 supply fans might be used in a typical house, and each fan has its own 6-in. duct. Supply air is filtered to a MERV 13 standard in case there are PM2.5 particulates from surrounding sources. OASYS system features In contrast, a conventional home HVAC system might use a large, central fan that pushes air through a larger trunk line, typically located in the attic, and then through smaller ducts to each room. In a conventional system, fans operate intermittently based on heating or cooling cycles, while the OASYS system features continuous air flow 24/7. OASYS, which has been deployed extensively in Japan and throughout the world, recently entered the U.S. market. Worldwide, 10,000 to 15,000 houses per year are built using the system. Conventional home HVAC system might use a large, central fan that pushes air via a larger trunk line. OASYS system concept The 2,700-square-foot home is being used to exhibit the OASYS system concept and to offer an experience In January 2025, Panasonic opened the OASYS concept home in Houston, Texas. The 2,700-square-foot home is being used to exhibit the OASYS system concept and to offer firsthand experience to business-to-business customers such as builders. Panasonic seeks to expand its central air conditioning business in the U.S., leveraging a competitive strength in ventilation fans, and to promote initiatives to optimize home energy management in the future, such as linking the system to other energy-saving devices. OASYS installations The OASYS design team works with builder and design partners and energy-raters to help them understand how the system works and what is required. For example, a tight-envelope, high-performance house is needed. Globally, many OASYS installations involve residences in the 1,200-square-foot range, which highlights opportunities to use the technology in multi-tenant housing applications in the U.S. The strategy is to work with “OASYS-certified” builders to ensure the concept is deployed effectively. Negative health effects OASYS is not an easy retrofit because it requires additional pathways through and between the floors OASYS is not an easy retrofit because it requires additional pathways through and between the floors, and because existing housing may not be sufficiently airtight. During the height of the COVID pandemic, IAQ briefly became top-of-mind, but awareness has waned since then, and many lessons learned from the pandemic have been pushed aside. Today, there is less concern about how an aerosolized microbe might get into the lungs with negative health effects, for example. Greater awareness is needed, says Nelson. Superior indoor air quality Failing to provide superior indoor air quality has consequences, but they may not be obvious or immediate, he says. Rather, they will become obvious over time. For example, a single burning candle might emit a PM2.5 particulate, which would pass through a resident’s bloodstream without obvious effect. However, the consequences of 10 years of burning candles, or the equivalent of other contaminants, would likely create adverse health effects. Better ventilation is key. “Instead of heating and cooling driving the ventilation, we have ventilation driving the heating and cooling,” says Nelson.

As the skilled workforce retires, college costs rise, and demand grows for hands-on careers, there has never been a better time for apprenticeships in industries like HVAC. As more people seek alternatives to traditional four-year degrees, vocational training offers a faster, more affordable path to meaningful work, and apprenticeships can play an important role. Apprenticeships come in many different forms, but all programs strive to build knowledge and skillsets for employees. Apprenticeships provide a long-term solution to labor shortages by developing a workforce that is trained, engaged, and aligned with industry needs. Ziehl-Abegg apprenticeship program The success of the Ziehl-Abegg training program suggests options to embrace a similar approach In the HVAC market, fan manufacturer Ziehl-Abegg offers an apprenticeship program that is a structured, rotational experience designed to prepare individuals for long-term careers in ventilation and advanced manufacturing. The success of the Ziehl-Abegg apprenticeship program suggests opportunities to embrace a similar approach throughout the HVAC industry. At Ziehl-Abegg, apprentices receive hands-on training across core business functions, including engineering, operations, sales, logistics, and assembly. The immersive approach ensures they not only develop technical skills but also understand how departments work together. Benefit from apprenticeships “The program strengthens retention, builds internal expertise, and aligns with our long-term growth goals,” says Layel Burton, Ziehl-Abegg’s Apprenticeship Coordinator. “By training apprentices in-house, we cultivate a workforce deeply familiar with our products, systems, and culture — creating highly capable employees who can grow with us as we expand our North American operations.” Businesses benefit from apprenticeships by gaining talent trained to meet specific needs, while communities gain a more resilient workforce. At Ziehl-Abegg, apprenticeships have helped to bridge labor gaps and to scale with confidence. With proper investment, apprenticeships can reduce unemployment, drive innovation, and help rebalance the economy by elevating careers that are essential but often underrecognized. Front lines of HVAC performance Contractors should understand how a fan or system was designed and tested at the manufacturing level Installers and contractors are on the front lines of HVAC performance, and well-structured apprenticeships can give them the technical depth and context needed to excel. When contractors understand how a fan or system was designed and tested at the manufacturing level, they are better equipped to install and troubleshoot it correctly, Burton contends.  “Our apprenticeship program teaches the ‘why’ behind the ‘how,’ which is something the entire HVAC chain can benefit from,” says Burton. “Manufacturers, service companies, and distributors alike should invest in mentoring programs to create field professionals who are not only capable but confident and connected to the bigger picture.” Skilled roles in ventilation and advanced manufacturing The Ziehl-Abegg program exposes apprentices to every major department — from engineering and logistics to quality and production. This cross-functional experience prepares them to step into skilled roles in both ventilation and advanced manufacturing. “Apprentices graduate not only with technical skills but also a deep understanding of our business, making them agile, dependable team members who are ready to support growth in the HVAC sector,” says Burton. Apprentice programs offer a range of benefits at any level of the HVAC supply chain. Structured partnerships Structured alliances among schools, firms, and rules ensure even training and smooth workforce entry Ziehl-Abegg is a German company, and in Europe, apprenticeships are deeply embedded in the education system and viewed as a respected career path—not an alternative to college, but a parallel track. Structured partnerships among schools, businesses, and government ensure consistent training and smooth workforce entry. In the U.S., apprenticeships are gaining momentum, but still lack the widespread infrastructure and cultural normalization seen in Europe. “At Ziehl-Abegg, with roots in Germany, we have adapted that model to our North American operations,” says Burton. “The U.S. can learn from Europe’s commitment to workforce alignment by promoting apprenticeships early, building stronger industry-education pipelines, and removing the stigma from vocational training.” Proficiency, thinking, and collaboration skills How can a company find great apprentice candidates? “A good apprentice brings curiosity, reliability, and a willingness to learn,” says Burton. “At Ziehl-Abegg, we look for individuals who show interest in hands-on work, ask questions, communicate well, and have a strong work ethic.” While technical knowledge is helpful, attitude and drive matter more, he notes. “Our program helps build confidence and competence by exposing apprentices to real responsibilities and rotating them through engineering, production, and logistics.” This experience develops technical proficiency, critical thinking, and collaboration skills. Apprentices leave the program not only prepared to take on a skilled role—but also with the mindset to grow into future pioneers. Aptitude and ambition to learn Baxley was a good match for the program because he had the aptitude and ambition to learn and work Joshua Baxley, Ziehl-Abegg Technical Sales Rep, Global Key Accounts, was an apprentice before joining the team full time. “I was drawn to apprenticeships because I was uncertain of what I wanted to do with my career,” says Baxley. “The apprenticeship program with Ziehl-Abegg provided an excellent opportunity to discover what type of career and profession I wanted to pursue by providing me the opportunity to work in all the departments at the company while paying for my education.” Baxley was a good match for the program because he had the aptitude and ambition to learn and work hard each day. These attributes helped him become knowledgeable of the company and the products as well as building strong relationships with colleagues. Four years of on-the-job experience The program allowed Baxley to get his foot in the door and gave him the opportunity to gain four years of on-the-job experience by the time he graduated. “All of this gave me the confidence each day to interact with customers and become well-versed in the world of engineering and sales,” he says. “The unexpected benefit I received from the program are the relationships and connections I was able to build throughout the company and the industry.”  “The apprenticeship at Ziehl-Abegg provided me with like-minded people my age that I created close friendships with while also building relationships with the people in each department I worked in,” says Baxley. “I highly suggest anyone to join apprenticeships if they have any uncertainty on their career path or if they can find an apprenticeship that matches their career choice and interest.”

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.

PSR Mechanical, a pioneering commercial HVAC service provider in Seattle, has partnered with ECM Technologies, a national pioneer in HVAC operational efficiency and energy conservation, to bring ThermaClear® to the local market. This groundbreaking HVAC treatment significantly improves system performance and extends equipment life. The first Seattle treatment took place at The Museum of Flight, the world’s largest independent, nonprofit air and space museum, housing more than 150 aircraft and spacecraft on its 23-acre campus.  optimizing system performance The programs deliver immersive, user-driven affairs around the subjects of aviation and robotics The Museum plays a vital role in community aerospace education, offering immersive STEM programming for K-12 educators and students. The programs deliver immersive, user-driven experiences around the subjects of aviation, space and robotics. By reducing energy use, optimizing system performance and lowering operating costs, ThermaClear frees capital for new exhibits and programs, safeguards delicate artifacts with reduced equipment downtime and delivers greater year-round comfort for the Museum’s guests and staff.  Several HVAC units The initial treatment was completed on several HVAC units within the Museum’s Aviation Pavilion, and PSR Mechanical is scheduled to treat an additional 282 tons throughout the rest of the campus within the coming months. Among the treated units is the system that cools the historic first jet Air Force One, used by Presidents Eisenhower, Kennedy, Johnson, and Nixon.   Declining HVAC performance ThermaClear is a one-time therapy that eliminates internal oil fouling, a joint but often overlooked ThermaClear is a one-time treatment that eliminates internal oil fouling, a common but often overlooked cause of declining HVAC performance. The treatment works by displacing oil buildup on heat exchanger coils, restoring maximum energy efficiency and allowing optimal heat transfer. It also super-lubricates compressors, reducing wear and tear and lowering the risk of failures. By forming a permanent protective barrier inside the system, ThermaClear prevents future oil fouling and the efficiency losses that come with it. This leads to fewer repairs, reduced operating costs and greater reliability with less system downtime.   ThermaClear Preferred Service Network The introduction of ThermaClear in Seattle follows a national partnership between ECM Technologies and Service Logic, the largest privately held commercial HVAC service provider in the United States. As a Service Logic company, PSR Mechanical is now one of a limited number of North American providers in the ThermaClear Preferred Service Network. This exclusive designation allows PSR to offer ThermaClear as part of its ongoing commitment to building performance and reliability.  Range of preventive maintenance programs “Adding ThermaClear to our service and project offerings allows us to combine our deep expertise in preventive and predictive HVAC maintenance with a cutting-edge technology that restores lost efficiency and protects systems long term,” said Greg Hagen, vice president of PSR Mechanical.  PSR Mechanical currently offers a full range of preventive maintenance programs designed to keep HVAC systems running efficiently and reliably. Over time, neglected maintenance issues can contribute to energy loss and premature equipment wear. With the addition of ThermaClear, PSR can help clients restore HVAC systems to peak performance and maintain long-term efficiency. 

Mitsubishi Electric Trane HVAC US LLC (METUS), a pioneering supplier of all-electric, all-climate Ductless and Ducted Mini-split and Variable Refrigerant Flow (VRF) heat-pump and air-conditioning systems, shared a customer success story on Weber State University, an energy-conscious school that uses all-climate heat pumps throughout its campus buildings. VRF solution from Mitsubishi Electric Weber is also using a ductless, water-source VRF solution from Mitsubishi Electric The Ogden, Utah-based university has installed a ductless, water-source Mitsubishi Electric Hybrid VRF™ heat pump system in the SkySuites, a building that houses the Weber State Athletics Department, coaching staff offices, press box, 26 suites, 150 club seats, and a study area for student-athletes. Weber is also using a ductless, water-source VRF solution from Mitsubishi Electric in the Noorda Engineering building. These solutions allow Weber State University to further its goal of reaching carbon neutrality by 2040. Conventional HVAC systems “Replacing our conventional HVAC systems has improved the comfort of students, faculty, and other staff, and it has significantly reduced our energy costs,” said Justin Owen, Interim Director of Operations for Weber State University. “We’re now exclusively installing Mitsubishi Electric all-climate heat pump solutions across campus because of their performance, functionality, easy-to-use thermostats, and warranties.” Key advantage of VRF and Hybrid VRF technology Weber State also cites zoning as a key advantage of VRF and Hybrid VRF technology Weber State also cites zoning as a key advantage of VRF and Hybrid VRF technology. Zoning provides more personalized comfort and improves efficiency. Each space has its own thermostat, allowing occupants to heat or cool their space to their comfort level. The Hybrid VRF system also pairs well with a variety of indoor unit options, including ceiling cassettes and wall-mounted units, to match the school’s different needs. Key technology in modernizing buildings Weber State University’s buildings have historically been cooled with chilled water from a central water plant and heated with steam from a central steam plant, both of which are energy-inefficient compared to modern systems. Plans are underway to convert the entire campus to Mitsubishi Electric Hybrid VRF solutions, which use water instead of refrigerant indoors and are a key technology in modernizing buildings. Approximately half of the HVAC systems on campus are fully electric now. Climate heat pump technology Approximately half of the HVAC systems on campus are fully electric now “Weber State University’s use of next-generation, all-climate heat pump technology make it a prime example for other universities looking to take steps toward future-proofing their buildings,” said David Archer, Vice President of Commercial Business at Mitsubishi Electric Trane HVAC US LLC. “Not only are Mitsubishi Electric VRF and Hybrid VRF systems energy-efficient, but they also allow university facility operators to customize and enhance comfort for faculty, staff, students, and visitors campuswide.” Water-source VRF solutions In addition to using all-climate heat pump technology to heat and cool its buildings, Weber State is also educating younger generations about these HVAC systems. Most parts of the Noorda Engineering building’s ductless, water-source VRF solutions are on display to students, with parts labeled and exposed. This setup empowers faculty to use the HVAC system as a teaching tool for students in its electrical engineering, mechanical engineering, and energy engineering programs.

Northwell Health, New York’s largest healthcare provider and private employer, has been at the forefront of sustainability efforts and energy efficiency for years. With 23 hospitals, more than 16,600 credentialed physicians, 18,900 nurses and 5,000 volunteers, Northwell Health serves as a vital resource to New York City, Long Island, Westchester and other communities across the state.  In 2018, Northwell launched an Energy Steering Committee to oversee energy use and implement initiatives to reduce its carbon footprint. One such initiative, a partnership with American Plant Maintenance (APM Steam), focuses on steam system maintenance, aiming to optimize efficiency and reduce energy consumption, while maintaining high-quality patient care. The Challenge Many of Northwell Health’s facilities rely on complex steam systems for heating, sterilization Many of Northwell Health’s facilities rely on complex steam systems for heating, sterilization and other critical operations. Maintaining these systems is essential to attain operational efficiency and patient safety. Yet, steam traps — essential components that remove condensate without losing steam — are prone to failure over time. A single leaking or plugged trap can cause substantial energy loss and increase carbon emissions, while driving up operational costs. With hundreds of steam traps across multiple hospitals, identifying and addressing failures required a proactive and scalable solution by the hospital team. The Solution In 2019, Northwell Health partnered with APM Steam, Woburn, Mass., to implement an annual steam system maintenance program. This program involves surveying steam traps across the hospital network, identifying issues and performing necessary repairs. APM Steam manages the utility incentive process, ensuring that Northwell receives available rebates APM Steam’s comprehensive approach includes inspecting steam traps, replacing or repairing faulty components, installing insulation to reduce heat loss, and descaling heat exchangers to attain optimal performance. Importantly, APM Steam manages the utility incentive process, ensuring that Northwell receives available rebates while providing detailed data to guide maintenance decisions and prioritize high-impact improvements. Reducing CO2 emissions Haneef Khan, a member of Northwell Health’s Energy Steering Committee, explains the value of this approach: "The energy and cost savings were staggering. Combine that with incentive funding for energy reduction by National Grid and ConEd, we can achieve payback in well under 12 months by proactively maintaining steam traps, system insulation and heat exchangers across our hospital portfolio." He adds, "We’re reducing our impact on the planet by reducing our CO2 emissions. The dollars we save in energy can be used to improve the quality of services we offer the communities we serve." Results The partnership has delivered substantial results for Northwell Health. Since January 1, 2022, APM Steam has surveyed 9,817 steam traps across the hospital network, resulting in remarkable savings: $2,403,672 in gas and electric savings 946,500 Natural Gas Therms saved $1,162,551 in utility incentives secured These efforts have yielded an overall return on investment (ROI) in just 1.4 years. The reduction in natural gas consumption not only translates to cost savings but significantly reduces Northwell Health’s carbon footprint. These results support the hospital network’s broader sustainability goals, while improving operational efficiency and freeing up budget for other critical improvements. Ongoing support from APM Steam Northwell Health has prioritized energy efficiency by participating in incentive programs Over the years, Northwell Health has prioritized energy efficiency by participating in incentive programs offered by National Grid and ConEdison.  These incentives have been instrumental in offsetting project costs and accelerating payback periods. With ongoing support from APM Steam, Northwell ensures that its steam systems operate safely and efficiently — minimizing waste, maximizing savings, and maintaining reliability across its hospitals. Conclusion The success of Northwell Health’s steam system maintenance program underscores the importance of proactive, data-driven maintenance in reducing energy consumption and operational costs. By partnering with APM Steam, the hospital network has demonstrated that regular maintenance and strategic use of utility incentives can drive significant financial and environmental benefits. Moving forward, Northwell Health remains committed to expanding these efforts across its portfolio of hospitals, ensuring that energy savings can be reinvested to improve patient care, enhance infrastructure and better serve the communities that depend on them.

The HVAC industry impacts virtually every aspect of modern life, from our comfort and health to economic productivity and environmental sustainability. However, the HVAC industry is not without its challenges, whether related to people, equipment, regulations, or the economy. We asked our Expert Panel Roundtable: What is the biggest challenge currently facing the HVAC industry?

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?

Digitalization is the integration of digital technologies into everyday life. In the context of HVAC, digitalization refers to the use of digital technologies to improve the efficiency, performance, and control of heating, ventilation, and air conditioning systems. Considering that digitalization is a major trend relating to HVAC, we asked our Expert Panel Roundtable: How does the digitalization of HVAC enable adaptation to evolving technologies and newer applications?