Can you replace R134a with R12?

To be able to use R134a in an R12 system, the R12 system needs to undergo a retrofitting so that it’s able to handle and process R134a refrigerant. This also means that some refrigerant conversion needs to be done in order to drop R134a into a R12 system.

When retrofitting a system from R12 to R134a what is required to be done?

Sanden Procedure for Conversion from R-12 to R134a Recover all R-12 refrigerant from the vehicle’s A/C system. Evacuate the A/C system for at least thirty (30) minutes to a vacuum of 29 in. Hg, using R-12 equipment, to remove as much R-12 as possible from the residue mineral oil. Remove all R-12 service equipment.

What is the replacement for R12 refrigerant?

R134a
There are three replacement refrigerant options for R12 systems: R134a, R401a, R401b. R134a is regarded, by manufacturers and adherents to the Montreal Protocols alike, as the best replacement refrigerant.

How much does it cost to convert R12 to R134a?

It will generally cost you about $200 to have a mechanic convert an AC system for you. If you want to replace a vehicle’s AC system, it will cost between $1,500 and $4,000 with an average cost of $2,750. If you decide to have a professional work on your car, you will have several options for where to get the work done.

Is it legal to buy R12 refrigerant?

Is it legal for me to sell? Yes, you can still sell R-12 and other CFC refrigerants. Although these refrigerants can no longer be manufactured, it is perfectly legal to sell to an EPA certified buyer.

When retrofitting an AC system from R12 to R134a what oil should be recommended?

R-134a systems require PAG (polyalkylene glycol) oil of a certain grade. PAG oil is hygroscopic, meaning that it readily absorbs moisture from the air. Never leave the cap loose when storing PAG refrigerant oil. Some manufacturers recommend using less hygroscopic POE (Polyol Ester) oil instead of PAG after a retrofit.

How to convert an R12 compressor to a R134a?

R12 to R134a Conversion steps. The first step is first to make sure that the AC system is empty. Discharge and make sure to recycle it properly. Make sure your AC compressor is in good shape, otherwise replace it. Flush your current system entirely of R12 without leaving any traces of the R12 in it.

When did GM washers start replacing R12 compressors?

Theres a GM TSB somewhere regarding this as starting in 93 ALL trucks wether R-12 or R-134 got the new stepped style hookup. I have yet to see a problem with the GM washers when installed correctly.

What can the R134a air conditioner be used for?

The R134A is now commonly used in the air conditioning systems in vehicles, but it can also be used in fridges, freezers and other coolers similar to the applications of the R12. The R134A is sometimes also used for cooling overclocked computer systems.

When did cars start using R12 instead of R134a?

Many organizations believe that R134A contributes to global warming. Vehicles manufactured before 1994 used R12 for air conditioning. Vehicles older than 1994 started using R134A instead of R12. So what if you have a car that was made in 1994 or even earlier?