When unitary heat pumps and air conditioners using R-410A were introduced to hvac contractors, many were skeptical. They had been working with R-22 systems for so long, the change seemed unreal. Then ...

What’s happening with the refrigerant blend hydrofluorocarbon (HFC)-410A (R-410A)? To answer that question, let’s start with a little background. Hydrochlorofluorocarbon (HCFC)-22, also known as R-22, ...

When a contractor suggests installing equipment that still uses last year’s refrigerant, you are not just choosing a model year, you are stepping into the middle of a national policy shift on how ...