EPA Approves Substitutes for Ozone-Depleting Hydrocarbon Refrigerants
The Environmental Protection Agency has issued a final rule, effective February 21, 2012, to list isobutane (R-600a) and R-441A as acceptable substitutes, subject to use conditions, for the ozone-depleting substances chlorofluorocarbon (CFC)-12 and hydrochlorofluorocarbon (HCFC)-22 in household refrigerators, freezers, and…
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combination refrigerators and freezers. This final rule also lists propane (R-290) as an acceptable substitute, subject to use conditions, as a substitute for CFC-12, HCFC-22, and R-502 in retail food refrigerators and freezers (stand-alone units only).