r-22 conversion to 421a choice refrigerant (3 Posts)
N/ANovember 3, 2012@ 1:58 AM
r-22 conversion to 421a choice refrigerant
fellas this is the replacement for r-22, no many parts house carry it, but you have a EPA card and are a legitimate business I will sell it to. I have used it for years to years there is no decrease if eff, no oil changes required.