When to replace R12 freon with R134a Freon?
When to replace R12 freon with R134a Freon? This next step is important because it is time to recharge the system. The rule of thumb is that the replacement R134A Freon is about 80% of the R-12 charge. If you charge the same amount as originally installed the system will not function properly. Next you’ll want to run an AC performance test on your new retrofitted air conditioning system. How to convert an R12 to 134A air conditioner? Convert auto r12 system to r134a jeep grand wagoneer r 12 to 134a rv air conditioning service converting ac system from r12...