Ozone Protection - EAc4 Implementation HVAC&R Equipment with No HCFCs Requirement achieved through EAp3 Ozone-depletion and global-warming potentials of refrigerants Refrigerant ODP GWP Building Applications Chlorofluorocarbons CFC-11 1.0 4,680 Centrifugal Chillers CFC-12 1.0 10,720 Refrigerators, Chillers CFC-114 0.94 9,800 Centrifugal Chillers CFC-500 0.605 7,900 Centrifugal Chillers CFC-502 0.221 4,600 Low-Temperature Refrigeration Hydrochlorofluorocarbons HCFC-22 0.04 1,780 Air Conditioning, Chillers HCFC-123 0.02 76 CFC-11 Replacement Hydrofluorocarbons HFC-23 < 4 x 10-4 12,240 Ultra-Low-Temperature Refrigeration HFC-134a < 1.5 x 10-5 1,320 CFC-12 or HCFC-22 Replacement HFC-245fa ~ 10-5 1,020 Insulation Agent, Centrifugal Chillers HFC-404A ~ 10-5 3,900 Low-Temperature Refrigeration HFC-407C ~ 10-5 1,700 HCFC-22 Replacement HFC-410A < 2 x 10-5 1,890 Air Conditioning HFC-507A ~ 10-5 3,900 Low-Temperature Refrigeration Natural Refrigerants CO2 0 1.0   NH3 0 0   Propane 0 3