Can You Mix R12 And R134A?

Published date:

2022-09-29
Score: 4.06/5 (42 votes)

Are you searching for an answer to the question: Can you mix r12 and r134a? On this page, we've collected the most accurate and complete information to ensure that you have all of the answers you need. So keep reading!

Ultimately, no. If you're trying to “top off” an R12 system with R134a refrigerant, you can face some hefty fines with the Federal US government and EPA.

You may wonder, can i add r134a to an r12 system? No. Federal law prohibits topping off an R12 system with a different refrigerant. Your options are to locate some R12, however you must be certified to purchase, and add it with an R-12 recharge hose.

Similarly one may ask, what refrigerant will mix with r12? RS-24 is compatible with all materials commonly used in refrigeration systems previously charged with R12.

Besides above, why is r12 illegal? The Ban on R-12 Refrigerant

The government banned the use of R12 in certain aerosol sprays as early as 1978. By 1987, the United States and 22 other countries first signed the Montreal Protocol on Substances that Deplete the Ozone Layer, phasing out the production of R12 and other CFCs and halons over time.

Likewise, which is better r12 or r134a? Understand that R12 has its advantages. R12 can blow 6 to 7 degrees cooler than R134a and is 15% more efficient. R134a systems require larger condensers and higher operating pressures than R12 systems because R134a doesn't have as high of a heat transfer rate as R12 (which has a heavier molecular size than R134a).


Is 134a a direct replacement for R12?

Replacements 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. It is a hydrofluorocarbon (HFC) and has zero ozone depletion causing potential and very low greenhouse effect.

How much does it cost to convert R12 to R134a?

R12 to R134a Charge Conversion Formula (pounds only)

Take the R12 charge specification and multiply it by 0.9. Then, subtract that result by 0.25 pounds to get the proper amount of R134a charge.

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.

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

When retrofitting a system from R-12 to R-134a, what is required to be done? Retrofit labels must be attached to the vehicle in a visible location.

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

range, a valve removing tool and retrofit labels, air conditioning systems operated with R12 refrigerants can be converted to the new refrigerant R134a. In addition, synthetic refrigerant oil is also required. This has to replace the mineral oil. PAO Oil 68 is particularly suitable here.

How do I convert R12 freezer to R134a?

The conversion is determined by multiplying the R12 charge value by . 75 (R12 charge x . 75 = R134a charge).


Can You Mix R12 And R134A - What other sources say:

What Happens If You Put R134A In An R12 System?

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What happens if you mix R12 and R134A? - Quora?

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Mixing R134A with R12 - Maintenance/Repairs?

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How To Convert Your Car AC R12 System To R134a (4 Steps)?

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What Happens If You Put R134A in a R12 System?

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What happens if i put r134a into an r12 air conditioning system?

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Putting R12 into a R134 vehicle | AnandTech Forums?

That said, the oils used by R12 and by R134a are different and not compatible. If mixed, they form an acidic sludge that is bad for the system.

Air-conditioning dos and don'ts: Refrigerants and the law?

You can then add ester oil that'll work with either R12 or R134a. With a tight modernized system that'll accept either refrigerant, you should ...


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