How much does it cost to switch from R12 to r134?
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 bad to mix R12 with r134?
R134a systems operate at higher discharge-side pressures than R12, which can cause compressor seals to leak. Bottom line, R134a simply doesn’t cool as well as R12. The advantage of ester oil is that it works with both R12 as well as R134a, so you can fill the system with it and then use either refrigerant.
When retrofitting a system from R12 to R 134a 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 happens if you mix R12 with R134a?
R134a systems work at higher discharge-side pressures than R12 systems, which could lead to compressor seals leaks. Additionally, since R134a is composed of much smaller molecules, it has a greater chance of leaking from an R12 system.
What happens if you put r134 in an R12 system?
What is the best 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.
When retrofitting an AC system from R12 to R-134a 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.
Is it illegal to release R-134a into the air?
Working with and around cars, it’s commonly accepted that it’s illegal to release refrigerant into the atmosphere, and people will say “don’t just open the system and drain it, it’s illegal and dangerous”. Shops commonly spend big money on certified recovery gear.
Is it illegal to release R134a into the air?
What happens when you convert R12 to R134a?
As a result, a system that is retrofitted from R-12 to R-134a will have lower capacity (run longer) and will probably develop higher head pressures (not enough condenser area). Check out the entire discussion here.
When did they start using R-134a refrigerant?
Since 1996, original equipment manufacturers have been using R-134a in all automotive air conditioning systems. R-134a is now the refrigerant of choice. This short article will help you learn proper safety procedures regarding the use of R-134a.
Which is lighter R12 or R134a refrigerant?
The volume of r134a refrigerant is lighter than the same amount r12 refrigerant. This not only is important to know for commercial refrigeration units, but it also is vital when making repairs on HVAC equipment and even cars.
What’s the difference between a R12 and are 134a heat exchanger?
In order to do the same job, an R-134a system will need a larger compressor and larger heat exchangers. As a result, a system that is retrofitted from R-12 to R-134a will have lower capacity (run longer) and will probably develop higher head pressures (not enough condenser area).