HVAC/R

How Was Refrigeration Discovered?

]Modern refrigeration is a big deal, and it’s not a stretch to say it’s one of humanity’s greatest achievements. It prevents bacteria, yeast and mold, which extends the life of food items, medical specimens and chemicals. Refrigeration technology has improved food safety, expanded seasonal food production, fueled medical research, refined print production and powered industrial […]

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6 Reasons to Become an HVAC Technician

A lifelong career in heating, ventilation and air conditioning (HVAC) is waiting for you right now. We need more men and women to fill positions in the manufacturing and construction industries.  Why? The skilled labor shortage in the United States is hitting these industries hard. Not enough people are entering them to fill jobs in […]

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What Does a Heat Exchanger Do in an HVAC System?

Any HVAC technician worth their salt will tell you that HVAC equipment doesn’t create cold energy. Rather, it transfers thermal (heat) energy from one location to another. Heat flows from areas of high temperature to areas of low temperature, according to the Second Law of Thermodynamics. The HVAC system is responsible for reversing this natural […]

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What Is a Cooling Load?

The process of cooling doesn’t involve pumping cool air into a room—it’s all about removing the heat. When an HVAC technician installs an HVAC system into a building, they need to figure out how much cooling a building actually needs. This is call the cooling load. So what’s it all about? Let’s dive into how […]

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What Is Evaporative Cooling?

Nearly half of residential energy costs are from HVAC units. Evaporative cooling can be less expensive to purchase and typically require less energy that other types of refrigeration. This technology has been commonly used in commercial settings like industrial kitchens, laundries, dry cleaners, greenhouses, loading docks, warehouses, factories, construction sites, workshops, and kennels. HVAC technician […]

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What Is Variable Refrigerant Flow?

Variable refrigerant flow (VRF) system installations are increasing as the heating and cooling source in hotels, schools, and multifamily residential buildings. The VRF industry is expected to grow by 10.8 percent from 2016 to 2021. 1 What is VRF and why is its popularity increasing? Introduction to Variable Refrigerant Flow Unlike traditional central air conditioners, […]

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Air Balancing an HVAC System

There are regulations for many industries including HVAC. Air balancing an HVAC system is one of them. Let’s examine the importance of air balancing in HVAC. What is air balancing? Simply put, air balancing is a process of checking that an HVAC system is running efficiently enough for the occupants to be comfortable. There are […]

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What Is Geothermal HVAC and How Does It Work?

When it comes to environmentally friendly HVAC systems, geothermal heat pumps are a promising and increasingly popular option. Baby boomer customers are attracted to the energy savings geothermal HVAC systems offer. Millennials consider going geothermal because it’s better for the planet. 1 In fact, geothermal is expected to supply 10 to 20 percent of the […]

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HVAC Professional Conduct and Code of Ethics

As an HVAC technician, you obviously need to have technical expertise. You may also need good “soft” skills like interpersonal skills, especially when you work closely with customers. Depending on your range of responsibilities, business acumen and administrative knowledge may be vital, too. Another aspect that is very important in HVAC is overall professional ethics. […]

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