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Re: HC-12A... Is it legal to use and who is inforcing the law??
Posted to HVAC Forum on 8/24/1998

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Scott, 1. Under the Clean Air Act, it is illegal to replace R-12 with HC-12a or any other flammable refrigerant. It is not illegal to sell the stuff however, just to USE it. 2. The Clean Air Act doesn... Login to read more.