R-22

Front view of a new container of R-22 refrigerant

Definition

R-22 is a common refrigerant used in home AC systems. Since 2004 it’s production and use has declined because of bans over concerns of its toxicity and environmental effects. Since 2020, use of R-22 in the US must rely on recycled or stockpiled quantities. Many older model home ACs still run on this refrigerant, so many homeowners either replace or retrofit the system.

Synonyms

Freon, refrigerant, Chlorodifluoromethane, Difluoromonochloromethane, Monochlorodifluoromethane, HCFC-22, Genetron 22, Freon-22, Arcton 4, Arcton 22, UN 1018, Difluorochloromethane, Fluorocarbon-22, Refrigerant 22

Related Terms

Expansion Valve

Expansion Valve

Controls how much refrigerant is allowed to flow into the evaporator coil

R-12

R-12

Common type of refrigeration used in older home AC systems

Freon

Freon

Brand name for a type of refrigerant used in air conditioning systems

Tags - R-22

Need help?