International standards

Rubber World Industry LLC, a globally renowned manufacturer of rubber insulation products, is pleased to announce its participation in the Big 5 Expo 2024, where it will unveil its latest Environmental Product Declaration (EPD)-approved product line, including the widely recognized Gulf-O-Flex brand. This marks a significant step in the company’s ongoing commitment to sustainability, innovation, and global expansion. Rubber World Industry is proud to be the nonpareil EPD-approved HVAC&R manufacturer in the GCC region, underscoring its leadership in producing sustainable insulation solutions.  eco-friendly and energy-efficient The Big 5 Expo, the Middle East’s largest construction and building materials event, will be held from November 26-29, 2024, at the Dubai World Trade Centre, attracting industry professionals from across the globe. Rubber World Industry’s new product line will be displayed at Booth No. 4A161, showcasing the company’s dedication to developing eco-friendly and energy-efficient solutions. Gulf-O-Flex insulation solutions Rubber World Industry’s new range, featuring Gulf-O-Flex insulation solutions, complies with stringent global sustainability Visitors will have the opportunity to see first-hand how the company’s innovative insulation products can drive cost savings, enhance energy efficiency, and promote a more sustainable future.  Rubber World Industry’s new range, featuring Gulf-O-Flex insulation solutions, complies with stringent global sustainability standards, earning EPD certification, a testament to its minimal environmental impact and high performance.  EPD-approved product line Mr. Rizwan Shaikhani, Chairman of Rubber World Industry LLC, expressed his excitement for the upcoming showcase, stating "We are proud to introduce our EPD-approved product line at Big 5 Expo 2024. The construction and industrial sectors are increasingly focused on sustainability, and our EPD-certified products are designed to meet these evolving demands." He adds, "Gulf-O-Flex is recognized worldwide for its superior insulation properties and this new product line will further enhance our position as a pioneer in sustainable building solutions."  industrial applications With the EPD certification, these products are globally recognized for their minimal ecological footprint The Gulf-O-Flex insulation products are engineered to enhance energy efficiency across HVAC, plumbing, and industrial applications, contributing to reduced carbon emissions and improved environmental performance.  With the EPD certification, these products are globally recognized for their minimal ecological footprint, making them ideal for green building projects and environmentally conscious industries. energy savings Rubber World Industry LLC recognizes the critical role of insulation in reducing energy consumption and combating climate change. By providing energy-efficient insulation solutions without compromising on quality or safety, the company helps its clients create healthier living environments, while making a positive contribution to global efforts in sustainability. 

Rubber World Industry LLC, a globally renowned manufacturer of high-quality insulation products, is excited to announce that it will be showcasing its latest range of acoustic insulation solutions during the Big 5 Expo 2024, which is set to take place from 26th – 29th November, 2024, at the Dubai World Trade Centre, in Dubai, UAE. The Big 5 Expo, recognized as the largest and most influential construction event in the Middle East, provides an ideal platform for industries to introduce their innovative products to an international audience of industry professionals.  acoustic solutions The new acoustic solutions are part of the Rubber World Industry’s renowned Gulf-O-Flex product line. They are designed to meet the growing demand for soundproofing in commercial, industrial applications, and residential projects. While honoring sustainable design principles, these palettes of acoustic products are engineered to offer exceptional noise reduction, while also maintaining thermal efficiency, making them ideal for creating more comfortable and sustainable environments.   addressing noise pollution Mr. Rizwan Shaikhani, Chairman of Rubber World Industry LLC, expressed his excitement about the upcoming demonstration, "We are thrilled to introduce our advanced acoustic insulation products at Big 5 Expo 2024." He adds, "As the construction industry continues to prioritize sustainability, energy efficiency, and comfort, our Gulf-O-Flex Acoustic Solutions effectively address noise pollution in various applications. We look forward to engaging with industry professionals and showcasing the versatility of our latest offerings."  Key highlights The acoustic solutions are manufactured with environment-friendly materials, contributing to LEED, EPD, etc Key highlights of Rubber World Industry’s acoustic solutions include Energy Efficiency, Sustainability & prime supercilious noise reduction. The acoustic solutions are manufactured with environment-friendly materials, contributing to green building certifications such as LEED, EPD, etc. Noise reduction capacity is designed to absorb and block sound transmission, making it ideal for use in HVAC systems, industrial plants, and sound-sensitive areas, such as offices, hotels, and hospitals. In addition to noise reduction, these products offer excellent thermal insulation properties, ensuring optimal energy efficiency and comfort. energy efficiency requirements The company’s technical experts will also be available to offer insights into how these products can be integrated into a wide range of projects to meet both noise control and energy efficiency requirements. Visitors can find Rubber World Industry at Stand No - 4A161, where they can explore the latest innovations and discuss customized solutions for their specific needs.

The need for clean, renewable energy sources requires exploring carbon-neutral fuels and their combustion behaviors. This is typically done using single-cylinder (SC) engines. The advantages of this process are to make quick hardware changes such as replacing the head or piston, or to change the fuel composition, which provide fuel cost savings compared to a multi-cylinder engine. Combustion control strategies, various air-fuel ratios, and the impact on emissions are studied using the simulation platform, GT-SUITE, and its real-time engine plant model solution, GT-POWER-xRT.   turbocharger interaction Control strategies applied to the SC cannot be applied one-to-one for the MC engine Based on this research, multi-cylinder (MC) engines are designed, simulated and manufactured. The main problems that can result from this methodology are the differences in behavior between a single-and multi-cylinder engine due to the cylinder-to-cylinder and turbocharger interaction. These interactions are not represented in the SC engine. Therefore, control strategies applied to the SC cannot be applied one-to-one for the MC engine. MC simulation results To mitigate this problem, engine simulations of a MC engine using combustion data from a SC engine are carried out to test and develop control strategies in the time before the multi-cylinder engine is built and available on a test bench. The other drawback is the time between taking SC measurements and applying it to the MC model, which can be weeks or even months.  It is not uncommon to find issues or at least determine some data are questionable after analyzing MC simulation results. If possible, SC measurements are taken again, or the project is continued based on assumptions that might or might not be good. Using Simulation to Model Varied Engine Configurations   A solution to problems is running the MC model in parallel and in real time when measuring SC data A solution to both problems is running the MC model in parallel and in real time when measuring SC data. The real SC engine provides the combustion data, which then can be applied to all cylinders in the MC model. The differences in gas exchange for each cylinder, such as varying trapped gas and residual fractions, are captured, and the same is true for the interaction with the turbo. Fuel composition and air-fuel ratio The MC provides engine speed, crank-angle resolved intake/exhaust pressures, and average intake temperature. The SC needs to be equipped with fast-acting valves (e.g., 10 kHz) on the intake and exhaust side to impose the conditions that come from the MC.  Similarly, changes in fuel composition and air-fuel ratio (AFR) can easily be studied, and control strategies for the MC can be developed.  Why are Carbon Neutral Fuels Different?  Combining measurements and simulation for combustion/control developments is especially interesting for hydrogen/natural gas or methane blends. Combustion characteristics like the laminar flame speed strongly depend on the actual concentration, especially for hydrogen. Hydrogen’s ability to burn at very lean conditions, combined with the fact that nitrogen oxide (NOx) formation reaches its peak at relative air-fuel ratios (‘lambda’) of ~2.0, make it useful to run at quite lean conditions. charging system requirements The charging system must be able to deliver high boost pressure levels with low exhaust energy Current trends in engine development are finding that operation at lambda 3 is not uncommon and some research indicates that this could even go higher. This requires a different approach determining the charging system requirements compared to conventional fuels like gasoline, diesel, or natural gas. The charging system must be able to deliver high boost pressure levels with low exhaust energy due to low combustion temperatures caused by excess air.  Power generation applications Therefore, optimized turbos, electric turbo (eTurbos) and/or electric compressors (eCompressors) are considered, especially for on-highway applications.    For power generation applications, the time-to-torque is essential. Coupling SC and MC enables control strategy development accounting for transient effects like turbo lag or fueling for non-direct injection (DI) applications.  HiL Systems to Run the Real-Time Model  Depending on the test cell infrastructure, the MC model can be executed on the test bench machine Depending on the test cell infrastructure, the MC model can be executed on the test bench machine. There is no need for a HiL system. The MC model can be linked directly to ETAS INCA, Vector CANape or any system simulation tool that supports FMUs, like Synopsis Silver. If combustion data are not already available from the SC test cell software, three pressure analyses (TPA) in GT-SUITE can be integrated into the process.  MC model cylinders A TPA model typically consists of a single cylinder representing the test cell hardware. Dynamic intake, exhaust, and cylinder pressures are used as model inputs. For this application, intake and exhaust pressures plus intake temperatures are extracted from the MC model. The output of the TPA model is a burn rate that describes how fuel and air burns. This combustion profile can be directly imposed in the MC model cylinders.  Combustion and Controls Simulation Capabilities  If they are interested in applying this technique to the development process or have questions on the process, please contact them for specific comments or questions. Learn more about GT-SUITE and the propulsion systems applications. 

Delta, a global pioneer in power management and a provider of IoT-based smart green solutions, will debut at SC24 with its broad spectrum of energy-efficient power, thermal management, and infrastructure solutions for AI and high-performance computing (HPC) data centers. Unique features of the showcase include highly innovative liquid cooling plate systems and the 1.5 MW Coolant Distribution Unit (CDU), cutting-edge ORV3 power shelf systems, and high-performance power and cooling solutions for GPUs. Delta’s superior capabilities Austin Tseng, President of Delta Electronics (Americas), emphasized, "By investing over 8% of its annual revenues into R&D, Delta constantly develops cutting-edge solutions to help its customers improve the energy efficiency and productivity of their operations." "With AI workloads pushing the limits of data center capabilities, our integrated power and cooling technologies will demonstrate Delta’s superior capabilities to enhance energy conservation all across AI data center ecosystems." Significant thermal challenges Delta is introducing a comprehensive suite of liquid cooling and air cooling solutions that tackle the significant thermal challenges presented by high-density, AI-driven data centers. Liquid Cooling Cold Plates and Air Cooling 3D Vapor Chamber with Fan Array: Delta presents highly efficient cold plates designed for the latest generation GPU/CPU and network switches, it also features the advanced 3D Vapor Chamber and Fan Array for the air cool options, Delta boast of industry-leading liquid and air cooling solutions tailored for AI servers and switches. In-Rack CDUs: Delta’s latest liquid-to-liquid In Rack CDU boasting of over 135kW cooling capacity in 4U form factor, also featuring are the liquid-to-air CDUs. Delta’s comprehensive In Rack CDU line-up, is ideal for transitioning air-cooled data centers to liquid-cooled operations, ensuring efficient thermal management in dense AI environments. Air-Assisted Liquid Cooling (AALC): The Liquid-to-Air solution offers 40 to 144kW of cooling capacity. Its closed-loop architecture eliminates the need for raised floors or piping. It’s perfect to upgrade for existing air cooling systems. With a cooling fluid flow rate of 1.5 LPM/kW, the system is tailored to meet the thermal demands of high-end GPU servers. 1.5 MW Coolant Distribution Unit (CDU): The Liquid-to-Liquid cooling solution provides up to 1.5 MW of cooling capacity. This solution is specifically designed to handle the thermal challenges of multiple high-density racks, each exceeding 100kW, ideal for AI-driven workloads. Energy Saving EC Technology High Power Air Mover for Facility Cooling: Delta’s High Power Air Mover (HPAM) fan series, equipped with advanced EC (Electronically Commutated) technology, delivers significant energy savings for data center facility cooling equipment, such as air handling units (AHUs) and chillers. These fans are engineered to reduce the energy consumption of facility cooling infrastructure while maintaining high cooling performance. AI Data Centers with ORV3 and Next-Gen Technologies At Supercomputing 2024, Delta will present a range of innovations designed to optimize power delivery, enabling data centers to meet the growing power demands of AI while minimizing energy consumption. These solutions provide the foundation for building AI data centers with improved energy efficiency and performance. Power Capacitance Shelves (PCS): This innovative power solution mitigates the GPU dynamic load reflections to the AC grid, such as AI server EDPP and Idle mode transitions. The PCS is able to perform fast charge and discharge power transitions due to the advantages of the Lithium-Ion Capacitor (LIC). The LIC provides high power density and long hold-up time (15-second/20kW load) to ensure a stable power supply for AI and cloud computing servers and, therefore, increase the power system reliability. The PCS is now available for 19” (1RU) and the latest 21” (1OU) ORV3 standard racks. 33kW Power Shelves: Available in 19” and 21” form factors and featuring 5+1 redundancy and hot-swappable modules, the 33kW power shelves deliver industry-leading efficiency at 97.5%. It also offers advanced smart power management via integrated Power over Ethernet (PoE) for seamless operation in AI-accelerated environments. Battery Backup System: The 33kW battery backup system with a 2OU compact size is an ideal solution for an AI data center. With 97.5% efficiency and UL9540A-certified, it ensures reliability and significant OPEX and carbon savings. Network Security Appliance: Delta’s Network Security Appliances provide a high-performance platform with x86 Server Grade CPU, up to 2T DDR5 memory capacity, and flexible PCIe 5.0 expansion slot to support various commercial 100G/400G Ethernet, high-performance GPU PCIe cards, fulfilling various applications such as Firewall, VPN, Security gateway. Empowering AI Acceleration with High-Density Power Solutions Delta’s high-performance power solutions are designed to maximize efficiency in GPU-accelerated data centers, supporting the intense demands of AI and HPC. High-Density Power Chokes: The power chokes incorporate patented designs and specialized materials that deliver excellent saturation current and low power loss. These high-density power chokes are ideal for voltage conversion in AI accelerators, ensuring maximum performance with minimal energy waste. 8,000W DCDC Power Distribution Board for GPUs: Delivering up to 98.2% efficiency, it powers AI servers with peak loads of 14.4kW, providing the energy needed for advanced AI processing with minimal energy loss. GPU Cooling Solutions: Delta’s 3D Vapor Chambers, combined with a highly efficient DC fan array, deliver cooling capabilities for GPUs below 1,200W. In addition, Delta’s liquid-cooled cold plates support the latest GPU architectures, offering a cooling capacity exceeding 1,200W. Attendees of SC24 are welcome to visit Delta Electronics Americas at booth #1251 from November 19-21, where the company will showcase a diverse product portfolio, demonstrating how Delta’s solutions can seamlessly integrate to deliver superior energy efficiency and performance in modern data centers.

Mitsubishi Heavy Industries Air Conditioning Europe (MHIAE) is expanding its FDT range with the introduction of the New FDT ceiling cassette unit. This latest model offers improved performance, together with automatic anti-draft control and motion sensor options, to optimize airflow for maximum comfort and energy efficiency. Overall performance of the FDT The unit’s energy efficiency has been enhanced with the integration of a newly designed impeller and flow path, which optimizes its aerodynamic performance.  Additionally, the use of a denser heat exchanger with smaller copper piping further improves the overall performance of the FDT, making the unit highly efficient. New FDT model A new function called 'Automatic anti-draft control' is implemented that provides optimal airflow Equipped with an optional corner-mounted motion sensor, the new FDT model detects human presence and activity within the room. A new function called 'Automatic anti-draft control' is implemented that provides optimal airflow from each outlet based on occupant location for enhanced comfort. When increased activity is detected, the air conditioning system adjusts its performance accordingly ensuring optimal comfort. For energy efficiency, it automatically shifts temperature settings based on activity levels, entering standby mode when no movement is detected. To further conserve energy, the system shuts off entirely after 12 hours of inactivity, minimizing unnecessary power use. Draft Prevention Panel The FDT unit offers a Draft Prevention Panel, a carefully designed feature that allows precise adjustment of each of the four flaps in any operational mode for customized airflow management.  Using a remote control, users can adjust the flap positions quickly and easily to ensure optimal comfort and airflow direction. This feature is especially beneficial in cooling mode, as it prevents the discomfort of direct exposure to cold air. Smart M-Air app With an optional control module, the new FDT unit now offers wireless connectivity, enabling users to manage and monitor their system through the Smart M-Air app on a smartphone or tablet. Users can also set notifications for reminders, such as turning off the air conditioner if left running. Whether heading to the office or running errands, users can pre-cool their space for a comfortable return - or, if forgotten, switch it off remotely from anywhere. The FDT unit is available throughout Europe via MHIAE’s extensive network of distributors.

Resideo Technologies, a global provider of solutions for home comfort, energy management, safety, and security announced the Honeywell Home FocusPRO® series: a new enhanced thermostat design and user-friendly interface to elevate home comfort and control. Unveiled at Resideo’s CONNECT 2024 Customer Event, the new Honeywell Home FocusPRO thermostats address HVAC contractor needs, delivering simplified installations with a sophisticated design and feature-rich portfolio. FocusPRO thermostats "Our FocusPRO thermostats have been trusted by HVAC installers for nearly two decades, and our new assortment offers a larger display that's easy to read from across the room and familiar features our HVAC contractors expect from the Honeywell Home brand," said Mark Behar, Senior Product Director of Comfort and Indoor Air Quality at Resideo. He adds, "Our new smart, programmable, and non-programable thermostats bring streamlined installation and equipment compatibility to our FocusPRO line." Features and Benefits The thermostats feature an easy-to-read display and an air filter replacement reminder that can help with indoor air quality and ensure the system runs efficiently. The series also offers several key benefits for HVAC installers: Broad System Compatibility: To meet the needs of the changing HVAC equipment landscape, the new FocusPRO series includes the first Honeywell Home non-programmable thermostats to support dual-fuel and 3H/2C heat pump applications. The FocusPRO series also supports up to 3H/2C heat pumps, 2H/2C conventional systems, and single-stage 1H/1C models. Easy Installation: Each thermostat in the series is outfitted with the familiar Honeywell Home (UWP) wall-mounting plate that ensures installation is easy and future upgrades to another Honeywell Home device are even easier. The installation for the smart model is streamlined by the Resideo Pro app for easy setup. Private Label Installation: HVAC companies can order interchangeable, snap-on accent pieces with their logo or contact information to support customer retention and recurring business. ENERGY STAR-certified products Its 4.8 square-inch display is easy to read from across the room, and users can control the comfort With more ENERGY STAR®-certified smart thermostats than any manufacturer, Resideo added the new Honeywell Home FocusPRO® S200 to its portfolio of ENERGY STAR-certified products that are compatible with many local energy programs and can help lower energy costs and balance the electric grid during periods of high demand. Its 4.8 square-inch display is easy to read from across the room, and users can control the comfort, setpoints, and schedules via the First Alert app. Energy-saving "Nearly half of Americans have discovered the benefits of using smart home products, and those looking to upgrade to a smart thermostat want features that help them manage their energy use," said Mark Behar. He adds, "Properties with smart technology can save 18-20% in energy costs. The Honeywell Home FocusPRO S200 smart thermostat offers these energy-saving benefits at an accessible price point from a trusted brand, making it a win-win for both HVAC professionals and their end users." The FocusPRO series is available in non-programmable, programmable, and smart options through participating Johnstone Supply and Ferguson U.S. locations.

Devastating wildfires sweep across the US each year, leaving a trail of destruction in their wake. Aside from the immediate damage that fire causes to property and land, the additional impact that wildfire smoke has on air quality creates a serious but often overlooked threat to human health. This threat from poor air quality includes people in the workplace.  IAQ management As wildfires increase in frequency and intensity, facility managers must be proactive to protect occupants inside their buildings. This article will explore how facility managers can manage indoor air quality during wildfires, focusing on the role and importance of HVAC systems and continuous IAQ monitoring. Huge Economic Losses to Business and Property The effects of wildfire smoke on air quality also have far-reaching consequences for businesses Wildfires cause massive destruction, with US workers suffering an annual average loss of $125 billion in pay. The broader economic impact is estimated to cost the US between $394 and $893 billion annually. While some of these costs result from direct fire and smoke damage, the effects of wildfire smoke on air quality also have far-reaching consequences for businesses regarding the “knock-on” effects, such as sick days caused by respiratory issues, productivity, and general well-being. Managing indoor air quality to keep building occupants safe, such as office workers, school students, and staff, is therefore becoming an essential part of a facility manager’s job. The Health Risks from Exposure to Wildfire Smoke The Invisible Invaders: Wildfire smoke carries a range of harmful pollutants, including fine particulate matter (PM2.5) and volatile organic compounds (VOCs). These microscopic particles can penetrate the lungs, causing respiratory and cardiovascular problems. As Professor Jeffery Siegel explained in a recent webinar hosted by Airthings, wildfire smoke also contains volatile and semi-volatile compounds and inorganic gas-phase compounds, many of which can pose significant health risks to people, such as eye, nose, and throat irritation, and, in more serious cases, cancers, immune suppressions, reproductive problems, and dementia Beyond the Obvious: The effects of wildfire smoke extend beyond the immediate vicinity of the fire. Smoke can travel hundreds of miles, infiltrating buildings and compromising indoor air quality even in distant areas. The Silent Threat: While staying indoors may seem like a haven, wildfire smoke can easily seep into buildings through windows, doors, and ventilation systems. Without proper IAQ management, the air inside can become as hazardous as the outside air. HVAC Systems: an Essential First Line of Defense Facility and building managers have challenging roles at the best of times When an area is affected by wildfire smoke, properly functioning HVAC systems and their filters, alongside strategies such as automating BMS to close dampers or increase ventilation when PM2.5 levels rise above a certain level, become critical for keeping people inside a building safe. Facility and building managers have challenging roles at the best of times, so how can optimizing HVAC systems support them in keeping building occupants safe during the difficulties posed by wildfires? Continuous IAQ Monitoring: The Key to Informed Action Preparing a building to cope with the risks posed by wildfire smoke is virtually impossible without knowing the baseline of what’s “normal” for your building’s HVAC performance, alongside demonstrating how a building might have performed during a previous wildfire and whether past mitigation strategies worked. Case Study: A customer we spoke to recently realized that their building’s reception area was particularly affected by dangerous levels of PM2.5 during a wildfire due to the simple fact that the outside door was regularly opening and closing.  This insight led to targeted interventions, such as installing an air curtain, to improve IAQ in that area. However, IAQ data from deeper inside the building determined that PM2.5 levels were safe, showing that the HVAC system and plan for sealing the building were working. Had PM2.5 levels been high across the building, this would indicate that the HVAC systems were not performing as they should. The customer now knows that their strategy works and can rely on it in the future.  IAQ Monitoring: Beyond Pollutant Detection System Performance: IAQ monitors can help assess the effectiveness of HVAC filtration and ventilation systems. By tracking changes in pollutant levels, facility managers can identify areas where additional measures, such as localized air purifiers, may be needed. Occupancy Patterns: Some IAQ monitors also measure occupancy, providing valuable information about which areas of the building are most frequently used. This data can guide ventilation strategies and optimize air quality in occupied spaces. Top Tips for Facility Managers Keeping People Safe During a Wildfire As discussed, facility managers are integral to maintaining safe indoor air during a wildfire. The following are some tips for how facility managers can help keep people safe inside a building during a wildfire: Install Air Quality Monitors: Use IAQ devices that continuously measure PM, VOCs, and CO2. These devices provide real-time and historical data to inform decisions about ventilation and filtration. Understanding indoor air quality conditions allows facility managers to respond promptly to any changes, ensuring that air quality remains within safe limits. Proactively Maintain HVAC Systems: Upgrade or Replace Filters: Use high-efficiency filters, such as HEPA filters, that can capture fine particles and replace them regularly to maintain their effectiveness. Filters should be checked frequently during wildfire season, as they can become clogged with smoke particles more quickly than usual, reducing their effectiveness. Regular maintenance of HVAC systems is crucial to ensure they operate efficiently.  Seal Buildings: Ensure that doors, windows, and other openings are properly sealed to prevent outdoor pollutants from entering. Use weather stripping and caulking to seal gaps around doors and windows, and consider installing air curtains in entryways to stop smoke from seeping deeper into a building.  Limit Outdoor Air Intake: Adjust HVAC systems to minimize outdoor air intake when smoke levels are high. While fresh air is generally beneficial, it can introduce harmful pollutants into indoor spaces during wildfires. Use recirculation settings in HVAC systems to keep indoor air moving without drawing in contaminated outside air. However, if outdoor air intake is still necessary, ensure that high-efficiency filters that control PM and gaseous chemicals are fitted. Communicate Risks and Actions: Educate building occupants about air quality risks. Clear communication helps alleviate concerns and ensures everyone understands the importance of maintaining IAQ. Provide regular updates on air quality conditions and any changes to building operations. Encourage occupants to participate in IAQ efforts, such as keeping windows closed and reporting any issues with air quality. Conclusion Monitoring IAQ and Proactive Maintenance Key for Protecting People During Wildfires To conclude, ensuring that the air inside a building is safe during a wildfire is essential for protecting people and productivity.  An approach that includes proactive HVAC maintenance, continuous IAQ monitoring, and also general preparedness regarding the necessary steps to take during a wildfire is crucial for keeping the people inside a building safe even when the air outside might be compromised.

The HVAC market is forecasted to grow at a projected compound annual growth rate (CAGR) of 3.9%, with a prediction to reach $370 billion by 2030. But in reality, the HVAC and plumbing industry is changing rapidly, with operators facing new challenges like never before. Whether it’s rising costs, the uncertain economy, increasing competition, or the workforce shortage, there’s no doubt the HVAC and plumbing market is evolving. So how do you adapt? That’s the key question. My take is that we can’t predict the future, but we can adjust based on the facts on the field. That’s why now is the time for industry operators to focus on strategies that elevate growth, relationships, and longevity. Here are three ways to tackle today’s market. 1. Diversify Service Offerings With the rising costs of customer acquisition and market competitiveness, it is increasingly challenging to build a successful, resilient trade business by just offering one service — especially if it’s a seasonal specialty. While one-service shops were the norm historically, things have changed in the market. The contractor’s relationship with the customer has never been more valuable, and offering multiple trades allows operators to keep relationships within the four walls of the company – without referring valuable leads (or the potential to lose a customer entirely) to the competition. While one-service shops were the norm historically, things have changed in the market By adding more services to your HVAC and plumbing line-up, you become the one-stop, go-to source for essential home services in your market. For the long-term sustainability of the business, it is crucial to ultimately offer the essential three services: electrical, plumbing/sewer, and HVAC. Additionally, when you provide a variety of services your business will experience less seasonal or cyclical highs & lows because it’s well-rounded, diverse, and, ultimately, healthy. 2. Build Scale through Investment It’s a fact: The home services market is highly fragmented, with over 100,000 contracting businesses active in the United States. It also continues to churn out profits — making it a quality investment for home services investors and private equity sponsors. The fragmented market dynamic is an ideal opportunity for consolidation – and there is more investment capital flowing into the market than ever before. Owners with ambitions to grow can be aggressive with tuck-in acquisitions to offer differentiated services Nationally, scaled Platforms backed by investors or large franchisors service ~20% of the market in a metro area. The benefits of scale are significant: substantial purchasing power (especially on equipment), robust digital/traditional marketing capabilities, programmatic recruiting/training functions, breadth of service offerings, and robust balance sheet to fund growth and investment – just to name a few. However, not every investor is the same. Many employ business practices inconsistent with the culture of founder/owner-backed businesses, which smart entrepreneurs/operators can use to their advantage. Owners with ambitions to grow can be aggressive with tuck-in acquisitions to offer differentiated services and build breadth/new skills in their businesses. Alternatively, businesses struggling to make it on their own or with owners approaching retirement, can partner with larger service providers so they can keep practicing their trade without having to run the day-to-day business – just be careful with selecting the right investor to protect your people and legacy. 3. React in Real Time One thing the HVAC and plumbing industry has proven over the last few years is its resilience – especially for the best operators. No matter what the economic climate is, homeowners still need to protect and stay comfortable in their most valuable asset. That should provide a sense of job security to HVAC and plumbing professionals — but also motivate you to go the extra mile to attract and retain business. Just because the HVAC and plumbing industry has shown signs of being recession-resistant (for now) does not mean it can’t be impacted by the economy. That’s why it’s crucial to manage the business daily – especially pricing and the components of gross margin. The best operators review cost inputs with their teams weekly and adjust mid-month, which ultimately helps the business maintain its health and profitability. As we head into the back half of 2024, it will be interesting to see how the rest of the year plays out for the industry, and I continue to be optimistic about a bounce back after a tough 2023. We will have to wait and see-but with the strategies above, businesses can position for success no matter what happens in the future.

The demands of HVAC professionals are unique, often requiring them to work in extreme conditions that necessitate gear that can keep up. Every day, these workers face fluctuating temperatures and a variety of hazardous environments. As such, the development of their uniforms has become a critical focus in the industry, with the goal of transforming them from basic work wear into high-performance apparel that meets the unique challenges of the HVAC work environment. Modern HVAC technicians’ uniforms now integrate materials that resist wear and tear while providing flexibility and comfort. They also incorporate safety features to protect against common on-site risks, such as electrical hazards and extreme heat. Integrating these technologies elevates comfort and enhances the protection of HVAC professionals, ensuring they can perform at their best. This article focuses on the latest innovations in HVAC uniforms, focusing on the materials and technologies that are enhancing both comfort and safety for professionals in the field. The Role of Safety and Comfort in HVAC Work Comfort and safety are vital for HVAC professionals, who regularly handle extreme conditions and complex tasks. On the one hand, comfort is crucial because HVAC work often involves long hours in tight, uncomfortable spaces or in harsh outdoor climates. The job also requires frequent bending, lifting, and climbing. High-visibility options ensure workers are easily seen in low-light states, reducing the risk of mishaps Uniforms that offer adaptive comfort, such as those made from breathable fabrics that regulate temperature, can prevent overheating in the summer and provide insulation in the winter. Furthermore, durable and flexible uniforms prevent common injuries related to overexertion and repetitive motion, thereby safeguarding workers’ long-term health. This adaptability allows technicians to focus more on their work and less on the discomfort caused by their environment. Safety is equally crucial because the environments in which HVAC technicians operate are laden with potential hazards, from electrical risks to exposure to harmful chemicals, refrigerants, and gasses. Safety-focused uniforms that include features like fire-resistant materials and reinforced padding can protect against burns, cuts, and other injuries. High-visibility options ensure workers are easily seen in low-light conditions, reducing the risk of accidents. Key Materials Enhancing the Performance of HVAC Uniform Here, we explore some of the key materials that are transforming HVAC workwear: Moisture-wicking fabrics: Moisture-wicking materials are integrated into HVAC uniforms to keep technicians dry and comfortable. These fabrics draw sweat away from the body to the exterior of the clothing, where it can evaporate quickly, maintaining body temperature and reducing discomfort. Ripstop nylon: Ripstop nylon in HVAC uniforms prevents tears and abrasions from sharp objects and rough surfaces. This material ensures the uniform's longevity and the wearer's safety. Thermo-regulated textiles: These textiles help maintain a stable body temperature by incorporating materials that adapt to temperature changes. They cool the body in hot environments and insulate it in cold conditions, providing year-round comfort. Antimicrobial treatments: Antimicrobial treatments are applied to HVAC uniforms to prevent the growth of bacteria and odors. This feature is particularly important as it helps maintain hygiene and freshness, even during long working hours. Flame-resistant materials: These materials are handy when electrical hazards are present. Flame-resistant materials protect against sudden flashes of heat or direct flames, Reflective materials: These are incorporated into uniform designs for increased visibility in low-light conditions. They are essential for ensuring the safety of technicians working in dimly lit or night-time settings. Spandex blends: Spandex is often blended with other fabrics for enhanced mobility. This addition allows for a greater range of motion, which is crucial for technicians who must navigate tight spaces or perform complex maneuvers. Innovative Technologies  Innovative Technologies in HVAC Uniforms for Enhanced Safety and Comfort The following technologies are ensuring HVAC workers perform their tasks with increased efficiency and reduced risk: Smart Fabrics Smart fabrics have sensors to monitor environmental conditions and adjust the uniform's properties accordingly. This can include changes in the fabric's permeability to increase breathability or the activation of thermal elements during sudden temperature drops. Reinforced Padding Strategically placed padding protects wearers from injuries related to impacts or falls. This padding is often lightweight and designed not to restrict movement, allowing for safe and comfortable mobility even in tight spaces. UV Protection For technicians who work outdoors, UV-protective fabrics shield them from harmful ultraviolet rays, preventing sunburn and long-term skin damage. This technology is crucial for maintaining skin health during prolonged outdoor exposure. Anti-Static Features Static electricity can pose a significant risk in environments dealing with flammable substances and electrical components. Anti-static technologies in HVAC uniforms prevent static electricity buildup, reducing the risk of sparks and enhancing safety in potentially explosive atmospheres. Stretch Technology Stretch technology is often used in HVAC fabric production to ensure that uniforms do not restrict movement. This allows for greater flexibility and mobility, which is essential for HVAC technicians who must maneuver in tight spaces or adopt various postures during work. Potential Future Trends in HVAC Uniforms Here are some anticipated trends that could redefine the standard for HVAC workwear: Smart textiles: Textiles embedded with sensors and wearable technology will become more prevalent, providing real-time data on environmental conditions and the wearer's health status. This can include monitoring temperature, heart rate, and other vital signs to prevent heat exhaustion or other health-related issues. IoT connectivity: Future uniforms might include IoT connectivity to monitor vital signs or the environmental conditions surrounding the technician. This technology can send alerts if unsafe conditions are detected or if a health parameter goes beyond safe limits. Eco-friendly materials: As sustainability becomes a priority, we can expect a shift toward eco-friendly materials in HVAC uniforms. Enhanced durability: New materials and manufacturing techniques will likely improve the durability of HVAC uniforms, making them resistant to tears, abrasions, and extreme conditions. HVAC Innovation A Move Towards HVAC Innovation that Balances Comfort and Safety Comfort and safety in HVAC uniforms are crucial, given the challenging environments in which technicians operate. Fortunately, current innovations in materials and technologies specifically address these critical aspects, enhancing the daily work lives of HVAC professionals. While significant strides have been made, there remains ample opportunity for further advancements. Areas such as IoT connectivity, smart textiles, and eco-friendly materials hold the potential to revolutionize HVAC workwear even further, promising a future where uniforms proactively support the health and efficiency of technicians. This forward-thinking approach ensures that as the HVAC industry advances, the workwear of its professionals will keep pace.

Johnson Controls’ Advanced Development Engineering Center (JADEC) in New Freedom, PA., about 25 miles from Philadelphia, highlights and demonstrates the company’s capabilities related to development, testing and manufacturing.  The 357,000-square-foot facility is an advanced engineering and testing facility for water-cooled chillers, air-cooled chillers, air handlers, compressors, and heat pumps. Much of the development in the facility centers on advancements in a critical vertical market for the HVAC industry – data centers. Big challenge  Data centers are a big challenge – and a huge opportunity – for the HVAC industry. “You cannot ignore the tremendous growth opportunity in this vertical,” says Todd Grabowski, president, Global Data Center Solutions for Johnson Controls. Unlike other verticals that are more dominant in certain geographic regions, data centers are growing everywhere globally – and at a breathtaking pace. “As a growth company, it is critical that we have solutions to handle the growth and serve the customers in the data center market,” says Grabowski. Performance of various components Testing options at JADEC include testing the performance of various components Testing options at JADEC include the ability to test the performance of various components in a controlled environment that approximates how they will operate in the customer’s real-world setting. There are more than 20 testing labs available at the JADEC campus, covering some 250,000 square feet.  “We want everyone to understand the unique position Johnson Controls is in to use our technology and our manufacturing scale to accomplish desired outcomes,” said Grabowski. Non-compressor solution  JADEC displays the full breadth of what they offer, including a non-compressor solution using direct evaporative cooling and an air-cooled unit that uses a screw compressor or a magnetic-bearing centrifugal compressor. Also included are various water-cooled chillers.   Johnson Controls owns, develops, tests, and manufactures all the compressors on display. Customers are assured of getting a fully engineered and supported solution from Johnson Controls (e.g., no third-party compressors). Johnson Controls owns, develops, tests, and manufactures all the compressors on display. Colocated data centers  Grabowski emphasizes that each customer installation has site-specific needs that require unique solutions that Johnson Controls seeks to fulfill. The company works closely with data centers, including those operated by “hyperscalers” such as Amazon, Microsoft, Apple, and Meta, and colocated data centers that rent space and capacity to customers based on their growth and needs. Colocated data centers come in a variety of sizes and types; some of them are operated by companies such as Equinix and NTT. Data center solutions Sustainable methods include the use of refrigerants with ultra-low GWP The sustainability of data center solutions is a bigger issue than ever, given the sheer volume of data centers being built to handle the world’s growing computational needs. Sustainable approaches include the use of refrigerants with ultra-low GWP, and water-free systems that do not require higher costs or create higher demands on a locality’s water infrastructure. Magnetic bearing centrifugal compressors are more energy-efficient because no friction is lost in the compression; also, the equipment is quieter. Impact on global electricity demand “Sustainability has always been an important aspect, and now it is critical in 2024 and beyond,” says Grabowski. Because data centers are huge consumers of energy, they can put more strain on the electricity grid and have a big impact on global electricity demand. Lowering energy usage helps to address the challenge.  “We want to contribute to energy efficiency, be good stewards of water, and reduce noise,” says Grabowski. Increasing the challenges are the proliferation of new artificial intelligence (AI) chips, more common in newer data centers, which need more power and create more heat than older chips.   Advantages of water cooling  The liquid contained in a cold plate on top of the chip is denser than air and accept more transferred heat Closed-loop liquid systems are used to cool individual chips, an application that does not cause a strain on local water supplies. The liquid contained in a cold plate on top of the chip is denser than air and can accept more transferred heat.  However, chillers and cooling towers lose water through evaporation and can strain local water supplies. Johnson Controls is researching and testing systems that provide the advantage of water cooling without losing excess water to evaporation. Air-cooled systems  In contrast, air-cooled systems can cool chips to a point, but may not provide enough cooling for high-density chips. Johnson Controls provides air-cooled machines up to 600 tons and water-cooled systems up to 4,000-plus tons.  “As chip technology evolves, the way you cool, secure and automate the entire data center changes as well,” says Grabowski. “Companies such as Johnson Controls must keep up with evolving trends and provide unique solutions.” As chips become denser from a heat-generation perspective, systems must be optimized from a footprint and energy standpoint.  JCI provides air-cooled machines up to 600 tons and water-cooled systems up to 4,000-plus tons. Technological solutions “As chip density increases, we will have technological solutions ready for the next generation of chips when they come out,” adds Grabowski.  Johnson Controls is also involved in developing new approaches to managing the heat from data centers, such as the possibility of recapturing the heat and circulating it into a district-heating system for a nearby community, university, or hospital. A more widely deployed approach in Europe, the concept of district heating is gaining acceptance in the U.S. market. {##Poll1725623180 - What is the biggest challenge the data center market presents to the HVAC community?##}

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

Humidity can influence employee health and productivity in the workplace. Humidity, temperature, and ventilation all work in concert to create a healthy indoor environment that supports overall occupant well-being. “Dry indoor air can cause discomfort in the form of dry skin, eyes, and throat for staff and visitors,” says Jennifer Montville, Director of Marketing at DriSteem, a manufacturer of humidification systems. Air-related health issues “There are real costs associated with health-related issues caused by dry air, including a higher occurrence of infections and increased rates of staff absenteeism?”  Maintaining a comfortable work environment, including the correct humidity levels, prevents respiratory issues and reduces the spread of illnesses, ensuring a healthy working environment and boosting productivity and efficiency, says Montville.  humidity levels Humidified spaces help keep facility costs down by improving thermal comfort at lower temperatures Maintaining humidity levels between 40% and 60% RH is ideal for mitigating virus transmission, she comments. Humidified spaces feel warmer and are more comfortable for employees, which in turn increases their productivity with improved concentration and less fatigue. It also helps keep facility costs down by improving thermal comfort at lower temperatures.  dehumidifiers Employing dehumidifiers to keep humidity levels from rising above that 60% RH threshold is also important. Removing excess moisture from the air reduces distraction from unpleasant smells or health issues caused by mold, mildew, or fungi that thrive in moist environments. All the ways that proper humidity levels affect employee health and productivity in the workplace also contribute to increased customer satisfaction in office and retail spaces, says Montville.  preventing product issues “We all prefer to spend time in places where we feel physically comfortable,” she says. “Customers in offices and retail spaces are no different. When physical comfort is not an issue, we are likely to spend more time and engage more deeply.” Well-managed humidity levels also help to prevent product issues such as shrinkage, warping, or degradation due to moisture fluctuations. Food quality is particularly impacted by humidity levels. In a retail store, this can translate to spending more time shopping in a store and a more positive opinion of the products being considered.  recommended indoor relative humidity level Keeping relative humidity levels within the range ensures the health and safety of building occupants The recommended indoor relative humidity level ranges from 30% to 60% RH, according to guidelines published by the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE). Keeping relative humidity levels within this range ensures the health and safety of building occupants without promoting mold growth or other indoor air quality issues.  air quality goals With that said, the type of indoor space, air quality goals, and how the space is used will determine the best relative humidity levels for each facility, according to Montville. Machinery and sensitive electronic equipment are vulnerable to low or fluctuating moisture levels. Static electricity buildup and electrical malfunctions are among the potential consequences of inadequate humidity control.  precise humidity control Many industrial processes depend on the consistent quality of materials, and fluctuations in relative humidity (RH) can result in less-than-ideal inputs which in turn impact the quality of final products. From preventing mold growth, spoilage, and texture deterioration in food processing to safeguarding medication stability, efficacy, and safety of pharmaceuticals, precise humidity control is critical to achieving intended results.  Optimal RH levels Adequate humidity also supports the body's natural defense mechanisms, enhancing the effectiveness Maintaining appropriate humidity levels is essential for infection control. Optimal RH levels can inhibit the growth and transmission of airborne pathogens, such as viruses, bacteria, and fungi. Adequate humidity also supports the body's natural defense mechanisms, enhancing the effectiveness of respiratory tract mucous membranes in trapping and neutralizing pathogens. Conversely, dry indoor air impairs these defenses, increasing susceptibility to respiratory infections.  humidity control systems Investing in commercial humidity control systems, such as those offered by DriSteem, can effectively regulate RH levels within facilities. “These systems provide flexibility and precision in catering to specific humidity needs across different areas within the facility,” says Montville. Whether integrating humidity control solutions in existing structures or implementing them in new buildings, factors such as the type of indoor space, energy source, required maintenance, and capacity determine the best technology for each building, she says.

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

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

To offset the cost of tenants’ monthly electric bills and provide prospective residents with high-quality HVAC upgrades that prioritize comfort and performance, Samuels Associates, owner of the Fenway Triangle luxury apartments, sought a new, building-wide heating solution that was not only cost-effective but also added a modern touch to the building’s extravagance. QMark® MUH-Pro+ and CU900 electric heaters with SmartSeries® Plus (SSP) digital BACnet thermostats from Goodyear HVAC Sales proved to be the ideal solution. Heat in a contemporary design “From their energy efficiency, quiet operation and low maintenance to the fact that they can be controlled individually for personalized comfort, electric heaters offer several benefits in apartment buildings,” explained Andrew Martin, Manager of Product Management with Marley Engineered Products® (MEP). “Delivering supplemental comfort heat in a contemporary design, these heaters are ideal for a variety of spaces including school hallways, church vestibules, transportation terminals, stairwells, entrances, lobbies, mechanical rooms and more.”  Installing Heaters while Maintaining esthetics Buildings boast modern frills and discreet and esthetically good HVAC plans that act quietly Steps away from the iconic Fenway Park, the Fenway Triangle is an 891,000-square-foot complex comprising more than 570 luxury apartment units, as well as an eclectic mix of national and local retailers, restaurants, shops and green spaces. Since opening in 2006, the building needed to address issues with its HVAC systems and controls, which were leading to high monthly electric bills. The culprit? More than 50 outdated competitor electric terminal heaters, which offered only on/off controls and needed to be operated manually. If the maintenance team forgot to shut off the heaters, "The Fenway" would incur the cost of each heater running at full capacity at a rate of about 27 cents per kilowatt-hour. Another challenge facing Fenway Triangle: The emergence of new luxury apartment complexes. These buildings boast modern amenities and discreet and esthetically pleasing HVAC systems that operate quietly. They pose significant competition for “The Fenway”, as tenants increasingly prioritize indoor air quality (IAQ) and HVAC performance when selecting their luxury residences. To remain competitive in the luxury apartment market, investing in HVAC upgrades to replace outdated equipment is imperative. QMark MUH-Pro+ and CU900 electric heaters  Heaters were installed in elevator banks, stairwells, worker lounges, hallways, and facility To combat the rising cost of heating each unit within the building, MEP’s local Sales Representative, Goodyear HVAC Sales, worked with HVAC distributor Equipment Direct Sales, Inc. (EDSI) to provide the client with energy-efficient QMark MUH-Pro+ and CU900 electric heaters from Marley Engineered Products. Designed to maintain occupant comfort and a comfortable environment, the heaters were installed in various elevator banks, stairwells, employee lounges, hallways and inside the building’s recently upgraded building management system (BMS) room.  “Equipped with SSP digital thermostats that provide connections to BACnet MS/TP BMS for easy control and monitoring, the MUH-Pro+ and CU900 units only run when directed by the internal schedule of the BMS,” said Matthew Goodrich, President of Goodyear HVAC Sales. “Use of the BMS saves time and reduces personnel costs by eliminating the need to travel to the heater site. And, if a BMS is not available, the maintenance team can simply use the built in seven-day programmable scheduling feature.”  New electric heating units Cost-Effective Heat for Unmatched Comfort and Lower Monthly Bills In tandem with EDSI, Goodrich and his team installed several brand-new electric heating units in The Fenway’s BMS room to provide cost-effective warmth without taking up floor space or creating a tripping hazard.  “Innovation and collaboration converged as we tailored a custom heating solution, seamlessly blending functionality and aesthetics,” explained Goodrich. “In fabricating this solution for the client, our dedicated team and the coordination of skilled contractors transformed this building into a space that harmonizes comfort and elegance and exemplifies the blending of form and function.”  Full control of the entire heating system The thermostats include features that allow the building’s maintenance team to monitor each heater The success of the project resulted in an extremely satisfied customer. Already, the SSP thermostats have provided cost savings by turning on the heaters only when needed, resulting in less electricity usage throughout The Fenway. Additionally, the thermostats include features that allow the building’s maintenance team to monitor each heater individually from within the BMS room, granting them full control of the entire heating system and eliminating the daily trips previously needed to turn each heater on and off.  “We’re already seeing the savings associated with the upgraded controls,” said John Belmonte, Head of Trilogy Operations for the Fenway Triangle. “Being able to control over 40 heaters locally allows our team to focus on tenant needs without being bogged down by the time it takes to touch each individual unit. We’re eager to work further with the Goodyear team on other buildings in the neighborhood.” Innovative approach and exceptional achievements To acknowledge the innovative approach and exceptional achievements demonstrated by the Goodyear team in overcoming the challenges faced during this project, Marley Engineered Products awarded Goodrich the 2024 Jim Herring Memorial Silver Fox Award at its recent national sales meeting. “This award for excellence in solution design embodies the spirit of Herring, who left a lasting legacy of designing creative solutions for specialized applications, was always up for a challenge and most happy when solving a unique heating or ventilation problem,” said Sean Pesce, Director of Sales for Marley Engineered Products. “Matthew and his team at Goodyear perfectly captured Jim’s talent for finding creative solutions to the most complex issues and left a lasting impression on the client.”

Tucked into the rolling hills of northern Kentucky just 15 miles south of bustling Cincinnati, the city of Independence offers its 28,000 residents access to urban amenities in a picturesque, rural setting. The landscape is dotted with farmhouses, but one 200-year-old home on a sprawling 150-acre property has a unique story.  Originally a log cabin in the 1700s, the house has been transformed over the centuries, with structural elements, updates, and modern comforts added along the way. The renovations, including a large expansion in the1920s and a handful of recent modernizations, have kept the home livable throughout the generations. historical integrity with comfort The current owner, Dr. C.J. “Jay” Hellmann, was 6 years old when he moved into the house. His fond memories of growing up on the farm are coupled with memories of sweating through the summer months. With its historic charm and cherished family memories from across the decades, the home means everything to him and his family, who value the farmhouse’s historical integrity but also require modern comfort. Efficient and effective cooling and heating Hellmann focused on making the house more comfortable by finding effective and efficient ways to heat and cool As Hellmann prepared the home for his daughter and son-in-law to move into, he focused on making the house more comfortable by finding effective and efficient ways to heat and cool the living areas. “The family had an oil furnace. They’re very expensive to run, not very efficient, and [produced] dirty air. The next generation moved in and wanted something a little more comfortable and cleaner,” said Josh Williams, Sales Manager, Corken Steel Products. Project highlights The farmhouse had both a rich history and antiquated infrastructure. It was steam-heated by a large, inefficient oil furnace in the basement and did not have ductwork or an air conditioner. Hellmann and his family felt the lack of air conditioning acutely during Kentucky’s humid summer months, which frequently see temperatures over 90°F. The family sought an HVAC solution that would fit their needs without compromising the farmhouse’s historic aesthetic. Inverter technology As the owner of Call Now Heating and Cooling, an Independence-based HVAC contracting business, Hellmann was familiar with LG but hadn’t considered the brand’s inverter technology until he met an LG sales representative at a local event.  The two discussed the benefits of heat pump technology and how an LG system could suit the home’s needs. Shortly after, Hellmann scheduled a walkthrough of the house, which helped determine the best comfort solution to condition the home evenly and efficiently while preserving its charm. Quality and availability Hellmann and his team collaborated with Corken Steel and LG to design an energy-efficient solution “I have an HVAC business and I can pick any equipment I want,” he said. “I picked LG for a few reasons, including the quality of the equipment that we looked at, the availability, and that it matched, it looked good in the home. The support from LG was also a key part of my decision.” Hellmann and his team at Call Now Heating and Cooling collaborated with Corken Steel, a ductwork fabricator and HVAC wholesaler, and LG to design an energy-efficient solution that tackled the challenges of bringing modern HVAC products into a coveted older home. Challenges Older homes can pose significant heating and cooling challenges due to inadequate insulation, uneven heat distribution from existing systems, and a lack of ductwork. With traditional systems, this combination of obstacles can lead to expensive and invasive installations where large units take up valuable space. Hellmann sought a solution that would avoid these disruptions and involve fewer adjustments to the home’s footprint and architecture. He found that an all-electric inverter heat pump system from LG addressed all these challenges. Solution The team decided on a whole-home solution using two Multi F Max withLGRED° units to deliver customized comfort to every part of the house. One low-static ducted unit can heat and cool the first level, and six low-wall ductless console units can condition the second floor. After selecting the system, the team began installing it in harmony with the farmhouse’s environment, which required hiding the equipment wherever possible. Together, they determined how to work around steam pipes, where to run lines and drains, the layout of units, and where to place the equipment to maximize airflow. Given the farmhouse’s historic nature, this was not a simple installation; it required the team’s ingenuity and dedication to maintaining the integrity. Refrigerant and power/communication lines The first-floor units use minimal duct runs installed through the floors and into the basement The first-floor units use minimal duct runs installed through the floors and into the basement, where the old boiler system was located. Rather than installing multiple ducted systems for heating and cooling throughout the farmhouse, the team ran refrigerant and power/communication lines discretely through the attic for the low-wall console units in the upstairs rooms and sunroom and utilized an old, unused, laundry chute to run lines into the basement and outdoor units. Comprehensive solution “Our representative from LG made it exceptional to work together. He always answered when we had a question, and if he didn’t know the answer, he told us who to call to get what we needed,” said Brad Helton, HVAC Technician, Call Now Heating and Cooling. The strong relationship between Call Now Heating and Cooling, Corken Steel, and LG made it possible for Corken and Call Now to design a comprehensive solution to fit Hellmann’s needs, streamline installation, and create benefits they hadn’t originally anticipated. Result Ultimately, the team’s main priority was met, the new HVAC system complemented the home’s aesthetic and preserved its historic charm, efficiently heating and cooling. The LG low-wall units’ appearance blended nicely with the farmhouse’s style and their flexibility and small footprints meant they could be placed with consideration for the rooms’ designs. Aesthetics aside, the Hellmann farmhouse reaps many additional benefits from the LG system. The homeowners now enjoy consistent, customized comfort along with reduced noise, improved indoor air quality, and greater energy efficiency. All-electric heating All-electric heating means Hellmann no longer pays for oil to heat the home in Kentucky’s cold winters “The system has better air quality, it’s easier to and the units put out a very hot heat and very cool air compared to a normal heat system,” said Casey Whalen, Installation Manager, Call NowHeating and Cooling. All-electric heating means Hellmann no longer pays for oil to heat the home in Kentucky’s cold winters. This is a significant contributor to energy savings. Zoned comfort control With the old furnace, he’d spent nearly $1,500 every 30-40 days for oil. Now, with the all-electric LG system, he pays about a quarter of that, even in the coldest months. Zoned comfort control offered by the LG system also contributes to energy savings. Using thermostats, remote controls, and smartphone applications, the family can set each zone in their home to a different temperature or even turn units off altogether, depending on the room’s use and occupancy. All-electric LG inverter heat pump “Having a new LG system in this home is very exciting,” shared Hellmann.“We’re able to have cool air in a house that’s 200 years old and has never had cool air before. This was the first summer that you could sit in here and be comfortable, have fresh air, and comfortably use different rooms like the porch. It has made the house more livable, much more useful, and much more comfortable.” Breathing new life into a centuries-old home is a tough task. For the family, the fix has been renovations and modernizations over the years. And Hellman says none stands to benefit the family more or give them a greater return on their investment than the all-electric LG inverter heat pump system. LG HVAC Products Multi F Max with LGRED° Low Wall Console Low Static Ducted Distribution Box Y Branch Connector Wi-Fi Module with LG ThinQ Compatibility Standard III Wired Remote Controller

Water and energy efficiency company Cenergist has been appointed by Ashford Borough Council to provide a nutrient neutrality solution for a new 1,000 home development using its patented Control Flow technologies. The site is within a nutrient-sensitive area that requires any new development to mitigate against increased localized waterway pollution.  Cenergist’s patented Control Flow products are pressure-independent flow controllers that provide long-term reductions in water wastage and nutrient emissions from homes as well as improve the performance of existing gas boilers. By eliminating the fluctuations in the water supply caused by system pressure changes, Control Flow provides a steady precise water flow to the home.  Control Flow installations By installing in existing homes in the area, Control Flow creates the headroom for new builds Performance tested in both the UK and Europe, Control Flow has been shown to reduce water and energy bills by up to £360 per annum with a 98% customer satisfaction rating. By installing in existing homes in the area, Control Flow creates the headroom for new builds.  Under the contract, Cenergist will determine the precise number of Control Flow installations required to offset all the nutrient emissions from the new development at Ashford. Working with the council, it will then contact and persuade householders of the benefits of the technology and then carry and complete the installations and provide the necessary assurance to allow Natural England to sign off on the development. The project follows on from the use of Control Flow to unlock a development in Crawley that had previously been held up due to water scarcity concerns. Nutrient neutrality strategies Paul Mckenner, head of strategic projects at Ashford Borough Council, said: “The retrofitting works is part of a series of measures to unlock approximately 1,000 new dwellings which the Council has a vested interest in.” In England, waterways including lakes, rivers and estuaries are protected under the Conservation of Habitats and Species Regulations 2017. Natural England has mandated that developments located near vulnerable watercourses require nutrient neutrality strategies to prevent negative ecological impact." Caroline Gray Mason, business development director at Cenergist commented: “Nutrient neutrality is a significant challenge facing developers as they look to deliver much-needed housing in a sustainable, responsible way. It is essential to be on the front foot with nutrient mitigation measures to minimize the environmental impact of new developments in vulnerable areas. Securing this contact with Ashford Borough Council is a testament to Control Flow’s role to mitigate nutrient pollution by reducing the level of emissions from existing homes.”

Hospital air handler restoration saves capital budgets for Tampa Bay healthcare facility! This project profile examines how HVAC restoration saves time, money, and energy compared to replacing aging equipment. The Challenge: A large suburban hospital located in Tampa Bay with a 479-bed facility offers comprehensive healthcare services for the region. Recently, SiteLogIQ was working with the hospital on energy/performance surveys to improve facility operations. During the study two air handler units serving Labor and Delivery rooms in The Women’s Center, The Baby Suites were identified as candidates for replacement due to degraded conditions and performance. The Solution: Due to the units’ location inside the penthouse and replacement costs, including time and facility disruption, it was determined that hospital air handler restoration could be done with WTI | Pure Air Control Services HVAC New Life program. Air handler restoration Hospital Air Handler Restoration with HVAC New Life - HVAC New Life is a series of component services conducted over consecutive nights. These phased services effectively cleans, refinishes, and restores performance to an AHU without loss of supply air during normal operating hours. CCV readings were also taken after the cleaning to monitor improvements PURE-Steam AHU and Coil Cleaning - The first step was to HEPA-vacuum the interior of the AHUs. Next, airflow resistance readings were taken across the cooling coils. This is known as a Coil Cleanliness Verification test, or CCV. Second, the interior of the unit was masked off and sanitized with WTI Pure Air’s proprietary PURE-Steam process. This included a deep cleaning of the cooling coils as well. PURE-Steam utilized bio-enzyme treatments and high temperature, low-pressure steam to penetrate through debris that was deeply lodged in the coil. Last, CCV readings were also taken after the cleaning to monitor improvements. In total, this process effectively optimizes AHU performance, cleanliness, and indoor air quality. Air handlers safely High-Performance Coatings - The next step in the hospital air handler restoration process was the refinishing of all the metal components of the units. This included the condensate or 'drain' pans, as well as the exterior. It was done with high-performance, multi-part polyurethane coatings designed and tested for use in HVAC equipment. They are antimicrobial, corrosion resistant, and have a very low odor to extend the useful life of the air handlers safely and effectively. Outside air dampers Outside Air Dampers and Controls - Finally, the AHUs were retrofitted with new outside air dampers which also included upgrades to the control components and system. In conclusion, hospital air handler restoration from WTI | Pure Air Control Services helped SiteLogIQ and the hospital refurbish two AHUs in much less time than replacing and with a significant 76% capital avoidance! Where two brand new AHUs would have cost the hospital $350,000 or more, the hospital saved $266,000 in capital by restoring them with HVAC New life for $84,000. Now the hospital has peace of mind in two restored units with five-year warranties that will provide many more years of service for their patients and staff.

The HVAC market is a rapidly changing environment on a variety of fronts, from the introduction of new refrigerants to the increasing use of artificial intelligence to the embrace of interconnected systems in the Internet of Things (IoT) environment. We asked our Expert Panel Roundtable: How will the HVAC market change in the next five years?

For schools, improving indoor air quality (IAQ) is a basic function of HVAC systems, which also ensures a high comfort level for students, teachers and staff. Schools can be a lucrative market for HVAC systems, but there are challenges, such as long sales cycles and the lingering impact of the COVID-19 pandemic. We asked our Expert Panel Roundtable: What are the challenges for HVAC in serving the education/schools market?

A long list of regulatory and environmental trends is determining the future of the HVAC industry. Some trends will have an immediate impact, while others will come in force years from now, although the complexity of the industry requires that manufacturers and installers start planning now. We asked our Expert Panel Roundtable: What regulatory or environmental trend will have the greatest impact on the HVAC market?