Do chlorofluorocarbon (CFC) refrigerant damage the ozone layer?
Yes. An international protocol limits future worldwide production and consumption of the fully halogenated CFC's 11, 12, 113, 114, and 115.
Virtually all of the refrigerants used in residential central air conditioning systems is called HCFC-22, which has some ozone depletion potential, but only one-twentieththat of CFCs. This is because HCFC-22
