Join Date: Aug 2007
Location: Staunton, VA - USA
Be careful with that assertion. I'll agree in so far as there is no need to change the compressor/evaporator/condenser but one must change out several things in addition to the refrigerant: receiver/dryer, system oil. and seals (in some cases).
These conversions are relatively straightforward, but they are not just changing the refrigerant.
It also takes less R134a by weight compared to R12 (about 85 to 90%) to get the same cooling. It's better to underfill, do your air temperature checks, and add a bit more if needed.
Also, it is R134a.
For anyone who has an R12 system that still functions and doesn't leak, there are shops that can and do work on them, they're just not out there "everywhere" and don't exist at all in some states.
The opposite of a correct statement is a false statement. But the opposite of a profound truth may well be another profound truth. ~ Niels Bohr