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.
What happens if you mix 134a with R12?
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.
Is 134a the same as R12?
R12 and
134a
are refrigerants used in car air conditioning systems. R12 was used in most cars and trucks until 1995 when it was replaced with 134a. … The main difference between the two is that R12 is the amount of time they remain in earth's atmosphere, with the newer 134a significantly less than the old R12.
Can you still recharge R12?
No you can not recharge an AC system equipped with R-12 unless you are a licensed technician
. You can convert your AC system to R-134 yourself, once the R-12 is dealt with correctly.
Is there any refrigerant compatible with R12?
There are three replacement refrigerant options for R12 systems:
R134a, R401a
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.
How much is 134a in a R12 system?
Charge with 134a
between 70-80% of the original R12 charge amount
. Note: Hot gas valve will need to be adjusted during the charging process to properly adjust the low side by-pass pressure to 20psi. Replace any O-rings with 134a compatible.
How do I convert R12 to 134a?
- Discard any R12 refrigerant still in the system by taking your vehicle to a licensed air-conditioning professional. …
- Open the engine compartment of your vehicle. …
- Push the high side retrofit R134a fitting over the old fitting and use a wrench to tighten it.
Can you mix R12a and R12?
Unfortunately I'm now out of R12, and this time I'm going to try a substitute,
environmental friendly Red Tek R12a refrigerant
. The manufacturer claims it's compatible with R12 and there are several positive reviews on it.
Can you mix red Tek 12a with 134a?
It's illegal to vent R134a
into the atmostphere! You don't just blow it out! Just adding R12a to a 134a system doesn't work very well because a 50/50 mix is very inefficient.
Can I replace R12 with r600?
With regard to R600a
Is there a direct replacement for R12?
The best replacement for R12 is considered to be
R-134a
. The chemical name of R134a is tetrafluoroethane and it chemical formula is CF3CH2F.
When did cars stop using R12 refrigerant?
For many years, R12 was the automotive refrigerant standard. It was effective and cheap. However, scientists quickly discovered its sinister secret: It was partially responsible for the rapidly-depleting ozone layer. In
1994
, it was banned from all new cars sold in the US.
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.
What component Cannot be flushed?
Accumulators, receiver driers, lines and hoses with filters and mufflers
CANNOT be flushed and must be replaced.
What year did R134a replace R12?
R12 and 134a are refrigerants used in car air conditioning systems. R12 was used in most cars and trucks until
1995
when it was replaced with 134a.
