Commercial HVAC

Galileo Technologies CEO - Jesus Grande believes the business’s unique set of gas solutions have the potential to play a key role in the global energy transition going forward. This is due to the fact that the world is currently struggling to reach its climate change targets and move away from the use of dirtier fuels. Global energy transition Galileo Technologies addresses one of the most urgent challenges of the time To make the most out of gas, rather than dirtier fossil fuels such as oil and coal, US based Galileo Technologies have developed a number of solutions that are designed to help the global energy transition by making natural gas and biogas more accessible and commercially viable for communities and businesses worldwide. Through these innovative, modular solutions, Galileo Technologies addresses one of the most urgent challenges of the time: delivering clean, affordable energy to regions disconnected from traditional pipeline networks or burdened by reliance on oil, coal, and diesel. Implementing strategies and improvements Jesús Grande, who has taken on the role of CEO at Galileo Technologies, brings extensive experience in defining and implementing strategies that drive sustainable improvements in results. With a focus on managing talent, processes, technology, systems, and communication, he has built a strong track record in the oil and gas services and operations sectors. Benefits of natural gas and biogas "The world is currently struggling to meet its net-zero targets, so a successful energy transition relies on innovation that breaks barriers, particularly by allowing greater use of gas as a transition fuel," said Jesús Grande, CEO of Galileo Technologies. He adds, "Galileo has pioneered solutions that bring the benefits of natural gas and biogas even to the most remote regions. I believe in this vision because it’s a tangible, scalable path to a cleaner future. This is why I’ve taken on this challenge — because the stakes are high, and Galileo has the technology and the commitment to make a difference." Galileo’s innovative virtual pipeline model Galileo Technologies is now pioneering the charge in advancing U.S. energy technology Galileo Technologies is now pioneering the charge in advancing U.S. energy technology, while contributing to the global energy transition. The company envisions a future where its cutting-edge solutions play a pivotal role in delivering clean energy to regions with limited infrastructure. By going beyond traditional pipeline networks, Galileo’s innovative virtual pipeline model transports natural gas via cryogenic iso-tanks to remote areas, including sub-Saharan Africa and Brazil. How Galileo brings clean energy to areas One of the most striking examples of Galileo’s impact is in Roraima, Brazil. Here, the company has transformed previously unviable sites, producing 500 tons of LNG daily using 40 Cryobox stations. This "virtual pipeline" model exemplifies how Galileo brings clean energy to areas far removed from conventional networks, showcasing its commitment to scalable and transformative energy solutions. In-house design and manufacturing capabilities With in-house design and manufacturing capabilities, Galileo Technologies ensures rapid deployment and compliance with global standards, offering tailored solutions based on the combination of standard equipment, to address the unique energy challenges of each region. "The world needs energy solutions that are clean, adaptable, and scalable," said Jesús Grande. Reducing emissions Jesús Grande adds: "The main reason I joined Galileo was that I could see that the unique technologies the business has developed are designed to meet these needs, while reducing emissions and improving access in areas that have been left behind." He continues, "Galileo Technologies is pioneering the charge to ensure natural gas plays a critical role in bridging the gap to a sustainable future."

Air-Con International, a pioneering provider of reliable HVAC solutions, is proud to announce significant upgrades to the TOSOT product line, delivering advanced climate control solutions for both residential and commercial customers. The enhancements feature improvements in energy efficiency, performance, and smart home integration, reaffirming Air-Con’s commitment to providing the most advanced heating and cooling solutions on the market. TOSOT latest product lineup TOSOT, a globally recognized brand manufactured by GREE Electric Appliances, is known for its commitment to innovation, quality, and energy efficiency. The latest product lineup builds on this legacy, offering improved performance, durability, and smart technology integration. The TOSOT Cardinal Heat Pump Mini Split Series now features advanced inverter DC technology, enabling rapid and precise cooling and heating. Energy Star certification and SEER2 ratings WiFi connectivity allows for convenient remote control through the Gree+ app or via voice commands The system is engineered to perform efficiently in extreme climates, operating reliably from −22°F to 118°F. With Energy Star certification and SEER2 ratings up to 21, these systems help homeowners reduce energy consumption and operational costs.  WiFi connectivity allows for convenient remote control through the Gree+ app or via voice commands with Alexa or Google Home, enhancing user convenience and integration with modern smart homes. TOSOT Starling Heat Pump Series The TOSOT Starling Heat Pump Series continues to deliver versatile and energy-efficient comfort for a wide range of applications. Like other TOSOT systems, it leverages inverter technology for precise temperature control and energy savings. Starling units are designed for durability and feature quiet operation, with indoor noise levels as low as 24 dB, ensuring a peaceful environment for occupants. TOSOT All-Match Multi-Split System For larger homes, the TOSOT All-Match Multi-Split System provides flexible comfort solutions For larger homes and commercial spaces, the TOSOT All-Match Multi-Split System provides flexible comfort solutions. These multi-zone systems can connect multiple indoor units to a single outdoor unit, allowing for customized climate control in various rooms. The compact and flexible design simplifies installation and makes the system suitable for both new construction and retrofit projects. Key electrical components Across the TOSOT product line, durability and safety are prioritized. Outdoor units feature Blue Fin shielding to protect against rust and corrosion, making them suitable for coastal and challenging environments. Key electrical components are housed in fireproof boxes to enhance safety and reliability. Intelligent defrosting technology ensures optimal performance in cold weather by automatically adjusting the defrost cycle based on real-time conditions.

American Air Filter Co. Inc., a member of the Daikin Group and global pioneer in air filtration solutions, introduces the BioCel® VXL RC and VariCel® VXL RC V-Bank Class of air filters, ushering in a new generation of high-performance air filters designed to perform better, last longer, and reduce maintenance time and total cost of ownership. Designed for use in HVAC systems in hospitals, schools, manufacturing plants, hotels, and other commercial facilities, the VariCel VXL RC and BioCel VXL RC each feature an 8-panel design with multiple recessed, mini-pleat media packs assembled into a series of V-banks, allowing them to contain up to 50 percent more media than standard rigid cartridge filters.   This increased media area provides greater airflow capacity and reduces initial resistance by up to 20 percent compared to conventional V-Bank filters, lowering overall energy usage and extending filter life. Near-HEPA filtration The BioCel VXL RC is AAF’s highest performing MERV 16/16A HVAC filter with near-HEPA-level filtration efficiency and a low initial pressure drop, making it an excellent choice against airborne biological contaminants in hospital critical areas as well as in food and pharmaceutical processing plants. The BioCel VXL RC allows for an easy high-efficiency upgrade of existing rigid-style filters without requiring special frames or latches, making it a perfect solution for air handling systems that require the highest level of ASHRAE-grade efficiency. The BioCel VXL RC filter offers greater than 99% average efficiency on 1.0µ to 5.0µ particles, which encompasses the sizes of most bacteria harmful to human health, weighs significantly less, and is much easier to handle and install when compared to traditional 12"-deep, box-style ASHRAE-grade filters with metal cell sides, saving valuable change-out time and money. Best Efficiency in Its Class The VariCel VXL RC is the most efficient v-bank air filter in its class The VariCel VXL RC is the most efficient v-bank air filter in its class, dramatically reducing airflow resistance to enable systems to operate using less energy. It is specially designed to deliver consistent air quality even in challenging operating conditions, including variable air volume systems, turbulent airflow environments, repeated fan shutdown scenarios, and moderate to high humidity settings. The VariCel VLX RC’s dual-density design allows dirt particles to be collected throughout the entire depth of the media pack, utilizing the full filtering potential of the media and maximizing dust holding capacity, extending the life of the filter while minimizing operating costs. VariCel VLX RC Additional features The VariCel VLX RC also features a strengthened frame for added durability with industry-pioneer burst pressure resistance is available in single- and double-header models, with MERV 15/15A, MERV 14/14A efficiencies, and meets LEED® Project Certification efficiency requirements. "Facility managers are under tremendous pressure to improve indoor air quality while reducing energy consumption," said Kent Mertz, product manager at AAF International. "These new V-Bank filters represent AAF's commitment to lowering our customers' total cost of ownership without compromising air quality, health, and safety. By combining reduced resistance, extended filter life, and ease of installation, we've created filtration solutions that deliver immediate and long-term value, while improving the air quality at facilities that use them." Easy Installation Both the VariCel and BioCel offer indentions on the top and bottom of the filter header for easy installation, are lightweight, are available in antimicrobial versions, and are fully incinerable. All models are available today through AAF International's distribution network. 

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

The HVAC industry stands at a critical juncture, facing substantial regulatory pressures aimed at reducing its environmental impact through the phased elimination of high Global Warming Potential (GWP) refrigerants. Driven by international agreements and local environmental guidelines, manufacturers, suppliers, and service providers are swiftly transitioning towards more sustainable alternatives. This shift is fundamentally reshaping compressor technologies, retrofitting procedures, and lifecycle management strategies for HVAC systems. Newer refrigerants Refrigerants such as R410A, widely used for decades, are rapidly being replaced by alternatives Globally, regulatory bodies like the U.S. Environmental Protection Agency (EPA), the European Union's F-Gas Regulation, and international environmental protocols, such as the Kigali Amendment to the Montreal Protocol, mandate a significant reduction in refrigerants with high GWPs. Refrigerants such as R410A, widely used for decades, are rapidly being replaced by alternatives like R32 and R454B, recognized for their markedly lower environmental impact. These newer refrigerants are not only less environmentally impactful, but they are also in increasingly high demand because of their role in meeting regulatory compliance. Adapting Compressor Technologies For HVAC companies, adapting to these changes requires significant investment and strategic planning. Compressor technology is a critical area demanding immediate attention, as the chemical properties of low-GWP refrigerants differ substantially from traditional refrigerants. To effectively utilize these new refrigerants, compressors must be meticulously redesigned or swapped out for a new system, to ensure system efficiency and performance is maintained. Industry best practices recommend thorough evaluations of compressor efficiency, reliability, and compatibility with the new refrigerants. Companies are encouraged to prioritize high-quality compressors, sophisticated electronics like Printed Circuit Boards (PCBs), and precisely calibrated controls that optimize energy consumption and cooling efficiency. The goal is to achieve a sustainable balance among affordability, performance, and environmental responsibility. Transitioning existing HVAC systems Industry pioneers advocate for wide technician training programs as an vital strategy Transitioning existing HVAC systems introduces significant complexities, as retrofitting requires substantial modifications to components, controls, and infrastructure. The retrofit process can be both technically challenging and costly. Industry pioneers advocate for comprehensive technician training programs as an essential strategy for managing these challenges. Such programs empower HVAC professionals with critical knowledge about refrigerant handling, retrofitting techniques, and adherence to new standards. Participating in robust training programs and utilizing essential tools—such as manifold gauges, refrigerant recovery tanks, and adapters—is vital for facilitating a smooth transition industry-wide. Those looking to get ahead should also look to partner with a targeted consultation and technical support services, helping businesses evaluate specific needs and make informed decisions about retrofits. This personalized approach significantly enhances the likelihood of successful system upgrades and regulatory compliance. Comprehensive Lifecycle Management Sustainability extends well beyond refrigerant selection, encompassing all aspects of HVAC system management—from manufacturing to end-of-life disposal. Partnering with HVAC suppliers that have obtained certifications such as Energy Star and AHRI guarantees the products meet stringent standards for energy efficiency, reliability, and environmental performance. Companies are increasingly adopting sustainable manufacturing practices, including the use of recycled materials, reducing waste during production, and minimizing carbon emissions through efficient manufacturing processes. Effective lifecycle management also involves proactive maintenance strategies that extend the operational life of HVAC systems, minimizing the frequency and scale of necessary replacements. Partner with certified recycling facilities Companies can partner with certified recycling facilities to ensure the proper handling and disposal Furthermore, readily accessible replacement parts ensure rapid repairs, reducing downtime and preventing premature system disposal. Proactively managing refrigerant supplies, including responsible storage and accurate tracking of refrigerant usage, prevents leaks and reduces emissions.  At the system’s end-of-life, promoting responsible recycling practices for components like compressors, coils, and electronics significantly minimizes environmental impact. Companies can partner with certified recycling facilities to ensure the proper handling and disposal of these materials, further driving towards holistic compliance with sustainability standards. Importance of proactive preparedness and agility Historical shifts, like the transition from R22 to R410A, have highlighted the importance of proactive preparedness and agility. Companies anticipating regulatory changes and proactively adapting their processes and products are better positioned to lead and provide compliant, reliable solutions. Such proactive measures demonstrate the value of having the necessary tools, resources, and training well-established before further regulations take effect. Future Outlook and Emerging Trends HVAC industry must remain vigilant regarding evolving rules and technical advances The HVAC industry must remain vigilant regarding evolving regulations and technological advancements. Ongoing monitoring and adaptation to standards on refrigerants, energy efficiency, and environmental sustainability are crucial. Companies embracing innovation and continuous education will effectively stay ahead of regulatory developments, offering superior value to clients. Emerging trends indicate an increased focus on integrated technologies and smart HVAC systems that maximize efficiency and minimize environmental impact. Companies investing early in such technologies will likely see enhanced market positioning and customer satisfaction. Air-Con’s extensive industry experience Air-Con International exemplifies industry best practices in transitioning to low-GWP refrigerants. Through proactive compliance measures, advanced compressor technology selection, and sustainable lifecycle management, Air-Con showcases its leadership and preparedness. The company's early adoption of EPA-approved refrigerants, such as R32 and R454B, demonstrates its strategic foresight in navigating complex regulatory landscapes. Moreover, Air-Con’s extensive industry experience provides HVAC professionals with critical expertise and tools required for effective system retrofits and maintenance. Their robust consultation services further assist businesses in customizing HVAC solutions to align with evolving standards and specific operational needs. Air-Con International’s dedication Air-Con International’s dedication to sustainability across its product lifecycle is evident via its Energy Star Air-Con International’s dedication to sustainability across its product lifecycle is evident through its Energy Star and AHRI-certified products. For instance, Air-Con’s Serene Plus Series features R32 refrigerant, inverter technology, and integrated Wi-Fi controls, showcasing Air-Con’s commitment to innovation, efficiency, and environmental responsibility. Additionally, the Saturn Front Return Series offers flexible, high-efficiency solutions tailored specifically for residential applications, merging environmental benefits with operational efficiency. Sustainable growth in an evolving market landscape As regulatory changes mandate the shift toward low-GWP refrigerants, HVAC industry members must adopt proactive strategies encompassing technological innovation, comprehensive education, and lifecycle management. Air-Con International sets a prime example of how careful planning, strategic technological investments, and robust support systems facilitate compliance, drive innovation, and ensure sustainable growth in an evolving market landscape.

As demand continues to grow for sustainable, energy-efficient solutions in refrigeration and heating, both Europe and North America are navigating a rapid transition toward natural refrigerants. There is a strong demand for new CO2 systems, including heat pumps and various other applications. Higher capacity compressors with larger operating envelope, such as Danfoss’ Bock HGX56 CO2 T series, will play a critical role in supporting this growing need. Air to water heat pumps As shown in Figure 1 and Figure 2 below, the larger operating envelope of up to 77°F and 65 bar on the suction side can improve the COP by approximately 15% for applications with higher heat source temperatures – for example, air to water heat pumps in summer conditions. Transcritical CO2 figure. Larger operating envelope of up to 77°F and 65 bar on the suction side. Figure 3 below shows a typical layout of a CO2 transcritical air-to-water heat pump for large systems, designed with features to boost efficiency. Such systems are already being built in Europe, with the largest compressor options, and used in heating capacities of up to 2.5 MW per rack. Layout of a CO2 transcritical air-to-water heat pump for large systems. Cooling and Heating Working Together Transcritical supermarket applications with heat reclaim are very suitable for improving the version Transcritical supermarket applications with heat reclaim are very suitable for improving the overall refrigeration system performance. It is a highly efficient and resilient solution that provides simultaneous heating and cooling by recycling waste heat energy within the store. More than 2,000 installations across Europe and in other parts of the world have shown that the traditional CO2 weaknesses in refrigeration applications, such as high temperatures and pressures, can be turned into profitable advantages when adding heat reclaim to the system. In fact, the operational costs can be reduced by more than 20% by replacing conventional heating sources with heat reclaim, and the pay-back time of the heat reclaim installation is typically short, less than 2.5 years. At the same time, huge carbon savings can be made when the system is installed and maintained correctly. Additional Applications Transitioning to CO2 CO2 is increasing in popularity for cold storage and food processing, due to some challenges of using ammonia in states with a large number of regulations, as well as the desire for distributed systems when expanding plants and the advent of larger CO2 compressors. Some estimates show a 10% market transition to CO2 from ammonia and HFCs for systems up to 250 tons (880 kW). An example would be a cold storage facility requiring variable temperatures with stability/efficiency at partial load for garlic processing, storage and pre-cooling. The requirements for pre-cooling are 40°C/39.20°F, but for processing and final storage, −100°C/140°F is required. CO2 System Examples Single-stage transcritical CO2 applications are used in the field of medium temperature refrigeration Single-stage transcritical CO2 applications are used in the field of medium temperature refrigeration. They can be operated very efficiently, if the high pressure is operated in the subcritical range over a long period. Using the high-pressure side, it is appropriate to use the application in the transcritical range in combination with refrigeration, due to a large temperature glide and a relatively high discharge end temperature for specific heat pumps and the heat recovery. In CO2 applications in low and medium temperature refrigeration, so-called booster systems are used. High-pressure CO2 gas from the low-temperature compressor is discharged directly to the suction side of the second compressor stage. Different plant constructions of these Booster applications are used, for example, in supermarket applications. In a cascade system, different refrigerants are used in an application. They are combined in two refrigerating circuits that are separated from each other. The high temperature stage is used as a condenser in the CO2 application. It is possible to use different refrigerants like hydrocarbons, ammonia, and HFCs like R-134A. Keys to a Successful Installation Proper oil levels, adequate space for maintenance and ventilation, environmental conditions and surface setup with sufficient load-bearing capacity are all critical initial items to consider. Once these items have been considered and addressed properly, then you need to take extreme care during the soldering - cooling the valve body during and after and only using inert gas to inhibit oxidation products. The actual required pipe cross-section must be matched to the output. The tube must be sawed at a right angle with the angular tolerance being ±10. Pipes and system components must be clean and dry inside and free of scale, swarf and layers of rust and phosphate. Only use hermetically sealed parts. Lay pipes correctly. Suitable vibration compensators must be provided to prevent pipes being cracked and broken by severe vibrations. Ensure a proper oil return and keep pressure loss to an absolute minimum. Suction and discharge should be depressurized prior to connecting to the refrigerant system. Proper layout of the suction and pressure lines directly after the compressor is integral to the smooth running and vibration behavior of the system. Oil return function To ensure the oil return function will work reliably no matter what kind of system configuration you are using, Danfoss recommends incorporating oil separators or oil level monitoring equipment. For systems with long pipes and higher degree of contamination, a filter on the suction-side is recommended. When attaching accessories with an electrical cable, a minimum bending radius of 3x the cable diameter must be maintained for laying the cable. Voltage and frequency values Compare the voltage and frequency values with the data for the mains power supply Connect the compressor motor in accordance with the circuit diagram (see inside of terminal box). Compare the voltage and frequency values with the data for the mains power supply. Only connect the motor if these values are the same compressors marked in this way are suitable for direct or part winding start.  The motor winding is divided into two parts: part winding 1 = 50 % and part winding 2 = 50 %. This winding division reduces the start-up current during a part winding start to approx. 50 % of the value for a direct start. Reversed fields of rotation In the factory, as shown below in Figure 4, the motor is switched for direct starting (YY). For part winding start (Y/YY), remove the bridges and connect the motor feed cable according to the circuit diagram. The motor is switched for direct starting (YY). Failure to comply results in reversed fields of rotation and can cause motor damage. After the motor has started up with part winding 1, part winding 2 must be switched on after a maximum 1-second delay. Failure to do so can be detrimental to the service life of the motor. Ensure that power is supplied via QA2 to winding 1 (50%) (1U1/1V1/1W1) and via QA3 to winding 2 (50 %) (2U1/2V1/2W1). The motor contactors (QA2/QA3) are each to be rated for approx. 50% of the maximum operating current. Danfoss BOCK compressors Transcritical CO2 compressors, like the Danfoss BOCK product line, offer a wide span of capacities with up to 162 kW of cooling capacity (14°F/95°F/18R/60 Hz) and 420 kW of heating capacity (41°C/77°C (100 bar)/18R/60 Hz) for many different product applications, including food retail, heat pumps, district heating, industrial refrigeration and process heating, reversible chiller/heat pumps for HVAC, cold storage, chillers, and data centers. Low and medium temperature levels are available, with high stand still pressures. This high capacity reduces the need for multiple compressors, simplifying system design and reducing investment costs. The Danfoss BOCK compressors also feature a high-pressure rating of 130 bar in operation/150 bar at stand still on the high side and 65 bar in operation/100 bar at stand still on the low side.

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.

With a reputation for uncompromising integrity, HDG Legacy is an experienced voice in the hospitality industry for those looking to build, own, and operate hotels. As both a respected developer and preferred management company, the Legacy team employs its core values of teamwork, communication, innovation, leadership and resourcefulness, and has an established reputation for positively impacting the hospitality sector. Currently, Legacy manages and maintains nine hotels that it owns, with its tenth opening July 2025. Rising energy and water costs  A commitment to improving and innovating hotels means that Legacy is alive to the economic challenges facing hoteliers, not least in operational challenges because of rising energy and water costs. With profit margins often razor-thin, even small innovations can mean the difference between profit and loss, so it was no surprise that Legacy looked to Anacove’s unique AI- and Cloud-powered Smart Thermostats, Leak Detection and Asset Management systems to help give its hotel clients the edge in their energy and water management. Anacove’s Smart Thermostats  “One of my core beliefs is that operating a business that respects the environment in terms of how resources are utilized is important just because that's the right thing to do – but there's also an economic benefit,” explained Navroz F. Saju, Founder and Principal at HDG Legacy. “We initially tested Anacove’s Smart Thermostats across our express properties, before piloting them in one of our larger hotels, and we were so impressed with the results (we actually have the data showing the savings for 2024-25 thus far – very impressive!) that we are looking to roll out the solutions across our other properties.” Electricity consumption reduced He continued, “We started using Anacove Smart Thermostats in July 2024 at the Holiday Inn Express Crystal River, and based on historical data and usage, electricity costs on our utility bills are 35.94% lower per occupied room.” “The Holiday Inn Express & Suites Silver Springs-Ocala’s electricity costs were 33% less than what we’d budgeted for per room, with the Holiday Inn Express & Suites Inverness-Lecanto coming in at 43% lower than budgeted in electricity usage.” Features of Smart Thermostats  Anacove’s Smart Thermostats are innovative IoT devices with advanced sensors Anacove’s Smart Thermostats are innovative IoT devices with advanced sensors that monitor temperature, humidity, air quality, barometric pressure, current weather conditions, daylight conditions and guest presence. They seamlessly integrate with HVAC systems through existing hotel WiFi infrastructure, allowing for centralized control throughout the hotel. This enables continuous optimization of each room, regardless of occupancy status, leading to immediate and sustained cost savings. Unlike other occupancy-sensing thermostats, Anacove Smart Thermostats remain active even when guests are asleep or have left their pet in the room. Optimizing HVAC Cycles  Learning from each room’s thermal behavior – heating and cooling coefficients – the thermostats optimize HVAC cycles, resulting in reduced peak energy consumption, and maintenance of guest comfort with less energy usage. “I have been very pleased with the transition to Anacove Smart Thermostats, and we will continue to replace older, less efficient thermostat technology with Anacove thermostats,” added Saju. “They are easier to operate – for staff and guests – and install than others on the market – irrespective of their superior energy-saving performance – and are incredibly responsive.” Anacove’s staff and support Such was their ease of use that Legacy’s skilled maintenance staff installed the Anacove Smart Thermostats themselves, but Saju is keen to point out how engaging Anacove was throughout the process. “Their support has been excellent. Even though the thermostats are easy to install and operate, if there is ever a question that needs answering the Anacove team is there to back us up very quickly and in a very expert way,” he said. “I've been very comfortable with their price point – I actually think that their thermostat pricing is the most competitive I have found – and with their after sales service and the technology’s ease of use they are very customer-centric indeed.” Anacove’s AI-enabled water management systems  In addition to rolling out Anacove’s Smart Thermostats incrementally across his hotels, Saju is also deploying the company’s AI-powered, cloud-maintained Toilet Leak Detectors and Asset Tracking Systems. The AI-enabled water management systems go beyond basic leak detection. While sensors installed in water tanks or behind walls detect even the tiniest leaks, it’s the AI that identifies anomalies, pinpoints problem areas, and alerts maintenance teams before the issue escalates – saving water, money, repair costs, and mitigating guest inconvenience. Anacove’s Asset Management System  Anacove’s Asset Management System equips hotel assets such as luggage carts, rollaway beds, cribs, housekeeping trollies and other movable items with location tags, which, thanks to the cloud-maintained AI system, helps to track down missing items, triangulating their exact positions, streamlining retrieval, reducing loss, and improving overall resource management. “We all expect a lot from our hotel’s front desk,” said Saju. “They’ve got to check people in, the phone's ringing, someone wants a bandage and then suddenly someone will check in and say, ‘where's the luggage cart?’” “The fact that they're immediately able to log in to the Anacove cloud dashboard on their phone and see exactly where the cart is – usually in a guest’s room – is an incredible time-saving benefit, enabling them to locate the cart’s exact location so that they can repurpose the cart for another guest’s use. In the past they would have to ring around guests’ rooms to find it – a waste of time and valuable resources.” Anacove AI cloud brain The performance of all four Anacove technology services (thermostats, toilet leaks, staff and asset trackers) are monitored and analyzed by the company’s AI cloud system, effectively a brain hovering over key operational areas of the hotel that make intelligent decisions. This ‘Anacove AI cloud brain’ – the only system of its kind – looks at the whole hotel as a single living entity, autogenerating reports that allow hoteliers to clearly see the return on their investment. The AI-enabled, cloud-connected energy management solution uses one inclusive dashboard, with a data-rich, monthly ‘flash report’ that provides a summary of how much energy has been saved, what's going on in terms of potential toilet leakage, etc. Easy and energy efficient  Overall, Saju is delighted with not only Anacove’s innovative, unique, AI-powered, cloud-connected devices, which are exceeding Anacove’s own expectations, but also by the company’s service and support. “They advertised a saving of about $12.00 per-room per month for the Smart Thermostats, which was pretty significant, but we're beating those numbers,” he explained. “Overall, all their technology is easy to install and use. There are huge savings, and – importantly – our general managers are very happy!” “Anacove’s after-sales service has also been second to none, and they have been incredibly receptive in helping us adapt the systems to our own requirements. I am a huge fan of Anacove and the team there; they're good people and I'm so glad that we're able to work together.”

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.

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?

Building design and HVAC are interdependent aspects of creating a comfortable, healthy, energy-efficient, and functional indoor environment. How important is collaboration as architects and HVAC engineers seek to ensure that a building's form and function are harmonized with an efficient and effective HVAC system? We asked our Expert Panel Roundtable: How does building design impact HVAC systems – and vice versa?

In today's smart homes, traditional climate control meets modern automation and connectivity. Technologies such as smart thermostats, home automation platforms, sensors, zoned heating and cooling, and artificial intelligence are combining to yield new levels of comfort for homeowners who embrace the smart home concept. We asked our Expert Panel Roundtable: How is the changing smart homes market impacting HVAC systems?