Safety standards - Editor's Note

Is wall paint a feasible element in an HVAC system? That’s the supposition that underpins Thermic heat-generating paint, which is applied like conventional paint but then can heat up a room when it is connected to a safe level of 24 volts of electricity. The paint is a water-based, solvent-free and low-pollutant dispersion that provides a wafer-thin carbon specialty coating (about 0.4 mm), which can be connected to a low-current circuit to provide radiant heat. In effect, the product allo...

Closed and cramped environments are especially problematic to the spread of the novel coronavirus that causes COVID-19. A ‘smart’ glass-paneled bus stop shelter, developed in Korea, embodies new approaches to making such spaces safe, including elements of HVAC. Smart shelters The smart shelters are closed-in glass cubes that serve as bus stops in the Seongdong district in northeastern Seoul, South Korea. The local district office collaborated with LG Electronics to develop the futu...

Carrier launched its BluEdge tiered service program after hearing from customers looking for a streamlined experience and a reliable, invested partner throughout the equipment’s lifespan. Carrier conducted a customer survey before launching BluEdge, and the common theme was a need for Carrier to articulate more clearly its value proposition and to simplify its service offering. Carrier launched BluEdge at the end of June in three businesses within the company, including the North America...

As schools work to reopen safely in the midst of a global pandemic, HVAC is at the center of the mission. Adequate ventilation and effective air filtration are critical elements to ensure safe indoor air quality for educational institutions. Many schools are housed in older buildings that may not have been adequately maintained. Transforming them to address the new challenges of minimizing exposure to the novel coronavirus is that much more difficult. In fact, a recent study by the U.S. Governm...

The Tennessee Valley Authority (TVA), the power provider in the United States, is offering incentives to businesses and schools to install UV-C germicidal lights to fight germs in indoor air. Customers that buy from TVA’s Preferred Partners Network can receive a $30-per-ton incentive toward adoption of approved UV-C technologies, which remove viruses and bacteria from indoor air. “Schools and businesses realize they need solutions to purify indoor air, and we want to help them insta...

Building Information Management (BIM) software creates an intelligent 3D model of a design or building project and provides documentation, coordination and simulation through each step of the project’s lifecycle, from planning to design, building to operation and even maintenance. Use of a 3D model enables stakeholders across various disciplines to visualize and understand every detail of a project before it is built, makes it easier to document a project, and facilitates communication amo...

The Wyss Institute at Harvard University has developed an evaporative cooling system that uses a specially coated ceramic to cool air without adding humidity. Researchers say the approach can yield more affordable and environmentally friendly air conditioning systems for the future. ‘cold-SNAP’ system The ‘cold-SNAP’ system uses a water-repellent nano-scale surface coating that is applied selectively to surfaces of a 3D-printed ceramic heat exchange. The result is much...

As the Internet of Things (IoT) has evolved, the need has become obvious for stronger unity among brands and ecosystems to enable products within smart environments to work together more easily. Working to serve that need is the Zigbee Alliance, which seeks to promote collaboration in the Internet of Things by creating, evolving, and promoting universal open standards that enable all objects to connect and interact. Their effort took off when Amazon, Apple, Google and the Zigbee Alliance announ...

Panasonic has conducted research that verifies that hydroxyl radicals contained in water can inhibit the novel coronavirus (SARS-CoV-2). The nano-sized electrostatic atomized water particles are generated by applying high voltage to moisture in the air. The patented technology - brand-named 'nanoe X' - is already used for air and surface purification in Panasonic’s air conditioning systems. The research suggests that the technology might be useful in fighting the coronavirus that causes C...

For HVAC installers, serving the needs of pet owners provides both challenges and opportunities. The consequences of pet ownership can take a toll on the operation and good health of a home’s HVAC system. Addressing that negative impact represents enhanced business opportunities, but maximizing those business prospects may involve scratching a few canine bellies and/or appreciating finicky felines. Just showing up at a service call might translate into a nightmare encounter with a protect...

The California Air Resources Board (CARB) is moving forward with rulemaking that sets limits and deadlines to decrease the use of refrigerants with global warming potential (GWP) in the commercial refrigeration market and in the residential and commercial stationary air conditioning equipment markets. California regulations are widely expected to influence the direction of other states seeking to regulate GWP of refrigerants. Declining to delay planned deadlines because of the novel coronavirus...

A University of Oregon study has found viral RNA from SARS-CoV-2 in the air handling units (AHUs) of a healthcare facility, thus raising new questions about the possible role of HVAC systems in spreading the novel coronavirus. The study collected 56 samples from three different air handling units at the Oregon Health and Science University hospital in Portland, Ore., on four days in May and June 2020. Three areas along the path of airflow were sampled, including pre-filters, finals filters, and...

The Centers for Disease Control and Prevention (CDC) has published guidance for businesses seeking to return to work during the coronavirus pandemic. Guidelines include instructions for businesses to ‘improve central air filtration to MERV-13 or the highest [standard] compatible with the filter rack, and to seal edges of the filter to limit bypass.’ MERV stands for Minimum Efficiency Reporting Value. A MERV-13 rating means a filter is able to catch 90% of particles in the 3-10 micro...

As businesses seek a return to normal following the global pandemic, they also face the prospect of new hurdles if the worst of the virus reemerges. Uncertainty reigns, and businesses do not know whether day-to-day operations will return to normal in six months, a year or two from now – or never. In a survey by the American Supply Association (ASA), 27.3% of respondents expect operations to return to pre-COVID-19 levels in two to three months, and 25% say it will be four to six months. B...

HVAC systems are the most common home repair, representing 19 percent of service incidents facing homeowners. More than half of homeowners (53%) have faced a home repair emergency of some kind in the past 12 months. Furthermore, about a third of homeowners have US$ 500 or less set aside to pay for emergency home repairs, with some 17 percent having no money at all set aside for emergency home repair work. 10th Edition of the Biannual State of the Home Survey These are among the results of the...

A new cloud-based solution enables HVAC professionals to access VRF systems remotely to diagnose service issues and lessen the time and costs of providing service. CoolAutomation’s Remote HVAC Service Solution enables HVAC service providers to remotely troubleshoot issues by analyzing real-time and historic data trends and analysis. They receive automatic error and anomaly notifications in their office or on their mobile phones. “The remote service solution provides the tools that H...

Newer buildings tend to be designed to be ‘green’, but what about older existing buildings, which still represent the largest share of environmental impact? There is more work to be done in the retrofit sector; and improving environmental performance of older buildings often involves ‘deep retrofits’ that are costly and impact multiple factors inside a building. In the COVID-19 era, there is also growing concern about needs such as circulating outside air, increasing hum...

The American Innovation and Manufacturing (AIM) Act of 2019 would provide an orderly national framework to guide replacement of hydrofluorocarbons (HFCs) over the next several years in the United States, with newer refrigerants that have less negative impact on the environment. HFCs are potent greenhouse gases with very high global warming potential. The future of the HVAC industry is tied to the manufacture of next-generation refrigerants and their adoption. Versions of the AIM Act – Sen...

Members of a family were eating lunch in a restaurant in Guangzhou, China, seated at a table below an air outlet and return air inlet for the central air conditioner. At another table sat a family who had just traveled from Wuhan, Hubei Province, China. There was another family seated at a third table. One of the diners experienced the onset of fever and cough later in the day and went to the hospital, later diagnosed with COVID-19. That was on Jan. 24, 2020. By February 5 – some 12 day...

Since the beginning of the COVID-19 pandemic, HVAC systems have been at the center of concerns such as indoor air quality and the need to minimize potential exposure. At the local level, HVAC installers have increased their efforts to keep equipment and supplies clean, and technicians are wearing gloves and masks as protection to keep customers safe. Many HVAC companies have also sought to give back to local communities hard-hit by the pandemic. As an industry, HVAC has remained committed to ma...

The U.S. Environmental Protection Agency has rolled back a standard set under the Obama administration to require leak repair and maintenance for industrial and commercial refrigeration and air conditioning equipment containing 50 or more pounds of hydrofluorocarbons (HFCs). The industry embraced HFCs, which are potent greenhouse gases, as a replacement for ozone-depleting refrigerants such as chlorofluorocarbons (CFCs). The requirements that have now been rolled back merely extended the leak p...

Which measures can lessen the spread of the novel coronavirus, and which can make it worse? As the pandemic continues to unfold, there is an overabundance of advice on the subject as it relates to HVAC systems. For example, one theory goes that air conditioning, by removing humidity from the air, may enable infectious droplets to linger longer than they would outdoors or in another space where humidity is higher. More humidity can weigh down viral droplets as they float through the air. Does i...

Mobile systems are growing in popularity across the HVAC market, driven by convenience and changing demographics of the workforce. For younger employees, smart phones are almost an extension of their hands. As they enter the HVAC workforce, they are eager to embrace mobile systems. However, the simplicity of mobile systems is also attractive to older workers, who may be less inclined to use a complex desktop computer system. In the case of mobile systems, “limitation leads to creativity,&...

When a visionary industrial designer turns his attention to the HVAC industry, it’s probably wise to take note. Recently, technology entrepreneur and philanthropist, Elon Musk expressed his vision for residential HVAC, based in part on a new heat pump his engineers designed for the Tesla Model Y electric compact sport utility vehicle. Efficient, quiet home HVAC system According to several reports, Musk seeks to build an efficient and quiet HVAC system for the home, piggybacking on the te...

Since the coronavirus pandemic began, the ultraviolet irradiation industry has seen an unprecedented surge in demand for germicidal solutions. UV-C light is a short-wavelength, ultraviolet light that kills germs by inactivating a microorganism’s DNA. Germicidal UV-C energy is just one of three proven methods identified by ASHRAE of controlling airborne infection. The other two are ventilation and particle filtration. The pandemic has left no doubt that the 254 nm germicidal wavelength can...

Google’s Nest smart thermostat is testing a new capability that will alert homeowners of problems with the operation of their HVAC systems based on artificial intelligence (AI) algorithms that analyze system performance. The technology will empower Nest Learning thermostats to provide ‘early warning’ of HVAC problems and even direct homeowners to a repair company. The new capability will involve measuring factors such as how long it takes to heat or cool a room. If the requir...

The need to achieve energy efficiency and improve performance propels a lot of business in the HVAC industry. When installing systems, building owners often strive to comply with the latest voluntary standards. However, some cities are taking the lead to make building performance standards mandatory, thus providing additional incentive for customers to invest in new, more efficient and climate-friendly HVAC technologies. Building Energy Performance Standard NYC has deployed its Carbon Mobiliza...

HVAC industry employees are included among “Essential Critical Infrastructure Workers During the COVID-19 Response” as designated by the U.S. Department of Homeland Security (DHS). The guidance memorandum states: “If you work in a critical infrastructure industry, as defined by the Department of Homeland Security … you have a special responsibility to maintain your normal work schedule.” The edict comes from the DHS Cybersecurity & Infrastructure Security Agen...

COVID-19 is a human tragedy for thousands and is having a profound impact on the world economy, including the HVAC market. Many businesses are scrambling to survive even as they address the intense human element of the crisis. A survey by the Air Conditioning Contractors of America (ACCA) gathered insights on the effect the coronavirus pandemic is having on the HVAC industry. More than 70% of survey respondents expect the medical implications of the pandemic to last up to three months. (The sur...

Refrigerants used in cooling systems for homes and businesses are being replaced with alternatives that have less potential for global warming. But the transition comes at a risk: Some of the new refrigerants are flammable.  Although less flammable than gases such as propane, for example, new refrigerants can still ignite and burn with a high intensity under ideal circumstances. The new materials have low-flame velocity and are less easily ignited; however, one byproduct of combustion is t...