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Re: On Hydrocarbon Refrigerants...
Posted to HVAC Forum on 5/25/2004

Martin,

It is similar here in some respects, but totally different in others. Here in the U.S.A. there are five EPA certifications (that I know of): for MVAC, we have the single 609 Certification (with a 608 exception; see below); for Residential, Commercial... Login to read more.