SEMA eNews Vol. 13, No. 46, November 18, 2010

EPA Approves Substitute A/C Refrigerant

The U.S. Environmental Protection Agency (EPA) approved hydrofluoroolefin (HFO-1234yf) as an acceptable substitute chemical for chlorofluorocarbon refrigerants. The chemical is intended to replace R-134a since it is believed to have far less global-warming potential.  However, “1234yf” may only be used in new motor vehicles. The EPA did not approve use by “do-it-yourselfers” to recharge vehicle air conditioners pending further review on whether there is a toxic chemical exposure risk via inhalation. The agency is also considering a proposal to allow 1234yf to be used as a substitute for R-12 in new motor vehicles. 

Questions may be directed to Stuart Gosswein.

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