Technology & Trends - Air Handling Units

It’s often said the only constant in life is change. In the HVACR industry, that phrase has been especially true. We saw another year of transitions in 2024 that included evolving efficiency and refrigerant regulations, changing corporate net zero targets, the continued emergence of advanced heat pumps, and the impact of artificial intelligence (AI) in building management.  Smart and sustainable Throughout these transformations, the industry continues to overcome challenges and in...

As environmental regulations become increasingly stringent, the HVAC/R industry is turning to sustainable refrigerants to minimize environmental impact. A3 refrigerants—flammable gases with low global warming potential (GWP)—are emerging as a preferred choice. However, their adoption introduces additional regulatory requirements. EPA regulations To address these challenges, the industry is leveraging innovative solutions like enhanced small-diameter copper tubes, which enable com...

Automotive HVAC is a heating, ventilation, and air conditioning system installed in automobiles, such as passenger cars, pickup trucks, and heavy-duty trucks. Like other air conditioning systems, automotive HVAC cools the air by transforming the refrigerant into a liquid or gas. The heating process, on the other hand, is characteristic of automotive HVAC as it uses the heat created by the engine.   HVAC systems in the automotive The adoption of heating, ventilation, and air conditi...

It’s an exciting and challenging time to be an HVACR professional. The industry is rapidly evolving to implement advanced technology and adapt to environmentally conscious regulations all while experiencing a skilled labor shortage. As contractors struggle to keep up, many are turning to HVACR press fittings for their efficiency, safety, and reliability. The demand for these press fittings has nearly doubled in the past five years alone.  unique characteristics While the global sh...

Hydrofluoroolefin (HFO) and so-called “natural” refrigerants have coexisted for more than two decades, with each serving the specific needs of the HVACR industry. However, over the past several years, the proverbial aisle has formed, with pro-HFO voices on one side and “natural” advocates on the other. EU F-gas regulations The debate is getting more “ink” these days, partly due to advances in proposed EU F-gas regulations as well as the acceleration of glo...

College was never the only path to success. There are many other nontraditional avenues to success, and I had the privilege of blindly venturing down one myself. My path included a short stint in college, then trade school, an apprenticeship, a role building a training program, a managerial role running a branch, and ultimately a leadership role running a large region of companies. I started my career as a heating, ventilation, and air conditioning technician, and I didn’t think I’...

This time of year, a lot of planning is underway. Companies throughout the HVACR industry are mapping out the best path to maintain their current level of business, pursue growth while staying in their lane, or expand into a new area based on changing customer needs and industry opportunities. Whether you’re a small family-owned residential HVAC shop, a major player in commercial HVACR service or manufacturing, or anywhere in between, it’s helpful to be aware of the strong dynamics...

Using air conditioners and electric fans to stay cool accounts for nearly 20% of the total electricity used in buildings around the world, according to a report from the International Energy Agency. hybrid work model As a unique mix of key factors, such as the adoption of the hybrid work model and escalating heatwaves in certain regions of the United States keep people indoors for longer periods, this 20% share represents an increasingly costly line item on household budgets. Those within th...

Most consumers choose an HVAC contractor based on their online reviews. Before making a final decision, potential customers actively look for what others have to say about your business, and having plenty of online positive reviews automatically positions you as a top pick. Reviews Reviews also help you rank higher in search results, and buyers are willing to pay more for brands with lots of strong reviews. So how do you get more of them? First, you have to create great customer experiences....

Today’s HVAC contractors are acutely aware that they need visibility on the internet and in their community if they want the phones to ring with requests for new business. As a result, HVAC company leaders have become savvy about marketing and advertising and know that search engine optimization, direct mail flyers, and flashy truck wraps attract attention. Public relations But what they don’t stop to think about is that their competitors likely have a very similar marketing strat...

Poor indoor air quality (IAQ) has been a longstanding problem within educational institutions, where it has been known to affect productivity and performance, as well as mental and physical health. And it’s not just the pupils at risk, with studies finding that this deleterious phenomenon can also compromise teaching performance and delivery, which inevitably affects the quality of the information received. CO2 concentrations This has recently been evidenced in a study conducted by the U...

Achieving carbon neutrality has, once more, become a business priority. Whilst COVID-19 distracted attention away from the drive towards Net Zero, green issues are once more back on the agenda and rising to the top of it. Building specifications The built environment accounts for around 28-40% of global emissions, so there is a collective ambition to start specifying buildings with as low a carbon footprint as possible. This is particularly true of commercial office spaces where operational...

Net-zero is high up on the agenda. And to achieve the UK’s carbon-neutral pledge by 2050 the country’s building stock must be decarbonized. Embodied carbon When we talk about decarbonizing buildings, there are two distinct categories of emissions that come into play. The first is embodied carbon. Here, the embodied carbon of a building includes emissions deriving from the construction materials, the building process, and the fixtures and fittings inside. It also covers emissions f...

Environmental ventilation is an incredibly important element of any building. It uses the natural, external airflow through a building to make the internal climate healthier. When appropriate environmental control is implemented, the benefits include better air quality, reduced CO2 emissions, and lower overhead costs. However, it’s not all sunshine and roses. This presents some issues that must be addressed. Residential buildings often use centralized heating systems, boilers, and ho...

Even though the COVID-19 pandemic is seemingly drawing to a close, living, working and learning at home is set to continue. Under this new normal, home electricity use is expected to double by 2050. Simultaneously, as climate change devastates communities around the world, we are faced with a moral and economic obligation to cut CO2 emissions from houses. Our goal is to build Net Zero houses and we can't get there fast enough. Fossil fuels use in heating systems Many countries continue to rely...

Seasonal transitions are the perfect time to take inventory and inspect a building’s various systems. We’ve been reminded for years that when we set our clocks back, we should also replace the batteries in our smoke detectors. The same thought process can be applied in support of seasonal preventative maintenance for a building’s HVAC system. Now that the cooling season has passed for a large part of the country, it is time to ensure that HVAC systems have been shut down prope...

The development of digital technologies in the Heating, Ventilation and Air Conditioning (HVAC) sector has been transformational for the industry, as well as for those who run HVAC systems. While the electrification and digitalization of machines, and assets has made a lot of operations simpler, it has also meant that the collection of machine data has never been more critical. Given that engineers can now view lots of different metrics on a single screen, including things like heating control...

With the increase in climate protests and UN reports highlighting future net-zero challenges, industries are trying to focus their business practices on principles of sustainable development and responsible investment. In the building sector specifically, landlords are gravitating towards certification schemes such as BREAM, LEED, and WELL (among others) to promote the sustainability of their assets and boost green credentials. Tenants are now demanding that the spaces they live and work in ar...

We visit the doctor for yearly check-ups and take our vehicles to a mechanic for maintenance and oil changes. The same idea applies to an HVAC system. An HVAC system can run around 2,000 hours per year and is a building system that is constantly expending energy. Without preventative maintenance, it is much more likely that a building owner could be overlooking silent issues that could cause a system to break down long before it should. Preventative maintenance is catching on for a re...

In today’s world, we spend almost 90 per cent of our time indoors, in our workplaces, leisure areas and our homes. It is no secret that the built environment has been relatively slow in its embrace of information technology and automation. According to KPMG’s ‘Building a Technology Advantage’ report, fewer than 20 percent of construction and engineering executives, and major-project owners said they are re-thinking their business models, so as to incorporate new technolo...

A quick glance at official COVID-19 mitigation guidance reveals that it promotes increased ventilation air change rates, as the most effective way to keep people safe. Sounds easy, doesn’t it? Just open a window or turn up your ventilation system, if you have one. The fact is, however, that the vast majority of domestic properties in Britain does not have a mechanical ventilation system and rely on natural means for background ventilation, including windows, trickle vents or air bricks. In...

Most people spend about 90 percent of their time indoors. For home owners, indoor environmental quality (IEQ) is the most meaningful differentiator between ‘high-performance’ and ‘code-built’ homes. Indoor environmental quality  IEQ describes how well the indoor environment promotes occupant comfort and health. The components of IEQ include thermal comfort, indoor air quality (IAQ), sound and lighting. Requirements for optimal IEQ vary per occupant and household, d...

With ongoing efforts from governments across the globe to reduce carbon emissions and with an ever greater focus on sustainability, it is vital that the HVAC sector does its part in becoming more environmentally conscious. And, while there have been steps to become more sustainable, there is a huge amount that still needs to be done to make sure that many of the targets that have been set are attainable. In buildings, both large and small, industrial heating accounts for roughly two thirds of i...

The education field was faced with multiple challenges this past year. Not only did the COVID-19 pandemic bring the necessity of online learning, but it has also brought up necessary changes to physical schools and universities, when reopening time arrives. The health and safety of students, staff, and faculty has become a priority for directors of school operations, who have been working to properly adapt school facilities to this new reality we are facing. Ensuring health and safety of studen...

Do HVAC systems help with the spread of COVID-19? No one is entirely sure, but it seems very likely. Especially in the case of enclosed indoor spaces. As soon as the COVID-19 pandemic began, fingers pointed to air-conditioning systems as culprits, and scientists now believe a super-spreader event traced back to a restaurant in Guangzhou, in China, which could have started with an asymptomatic person who just happened to cough close to an HVAC fan. Scientists also believe something similar happe...

Over the last year, we’ve become all too familiar with the risk posed by a deadly airborne virus, but, as we move out of lockdown, there are other airborne hazards we urgently need to fight. However, while advice and guidance are abundant in the use of heating, ventilation, and air conditioning systems in combating the spread of COVID-19, there has been very little said of the risk of using HVAC systems after a prolonged period of inactivity. As those familiar with HVAC systems know, air...

Evolution is key. The lessons learned by navigating the COVID-19 global pandemic over the last 18 months have proven that most companies and industries must be in a constant state of evolution, or risk being left behind in favor of a quicker, more nimble innovation. As the world made strides to adopt “the new normal” across personal and professional lives, such evolution increased tenfold, from stay-at-home orders to social distancing, masks, vaccinations, and now, a slow and steady...

In what can only be described as a very turbulent year, many businesses have had to shut their doors and have all but forgotten about the general upkeep of their sites. With priorities shifted to keeping companies afloat and staff employed, maintenance and servicing has taken a backseat, and many systems will be deteriorating unnoticed. It goes without saying that one of the first tasks that employers will have to tackle when returning to work is a deep clean. As we are still in the throes of a...

HVAC systems have never received more widespread attention and media coverage than they have this year. As researchers determined that air transmission was a major factor in the spread of COVID-19, HVAC systems quickly became an area of intense discussion. Much of the news coverage from outlets like the New York Times, NPR, CNBC, or USA Today focused on air filtration. HEPA and MERV have become acronyms that people recognize, and UV Light and Plasma Ionization air purifiers have almost become di...

Demand for underfloor air conditioning systems, which are far more flexible and adaptable than ceiling-based systems, has risen as developers and landlords scramble to reconfigure office spaces in the wake of the coronavirus pandemic. Experts have predicted a 50% reduction in office occupancy, as millions embrace working from home. What is underfloor air conditioning? A zonal underfloor air conditioning system makes use of the raised floor void as a plenum for the distribution of air. Supply a...