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