Refrigerant (or gas): the working fluid for air-conditioners. R22 or R410A is usually used but R22 is being gradually phased out due to the Montreal Protocol, which seeks to end production of HCFCs (hydrochlorofluorocarbons). R410A is more energy-efficient and environment friendly in comparison.

As a homeowner considering a purchase, it’s important that you understand the difference so you can make the best decision for your system. We’ve outlined below the main differences and why they matter.

R-22

Often referred to by a brand name like Freon®

As of 2010, R-22 was discontinued for use in new air conditioning systems

R-22 is a hydro-chlorofluorocarbon (HCFC) which contributes to ozone depletion

R-410A

Often referred to by a brand name like Puron®

Has been approved for use in new residential air conditioners

Is a hydro-fluorocarbon (HFC) which does not contribute to ozone depletion

Will become the new standard for U.S. residential air conditioning systems