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Is 134a the same as 12a?
HC-12a, also called ES-12a, OZ-12a, DURACOOL 12a and Hydrocarbon Blend B, is a “drop-in” replacement refrigerant for Freon-12 and to a lesser extent, R-134a. Unlike R-134a, HC-12a is completely compatible with the hoses and oils used in R-12 systems, making the conversion much easier to accomplish.
Is R134a more efficient than R12?
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).
Can I mix 134a and 12a?
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. If you don’t have a vacuum pump, you can still make it work though.
What is special about R12 hoses compared to R134a?
The hose has an extra liner for higher pressure and to prevent leakage of the easy to leak out R134a. From what I understand the molecule is smaller for R134a thus it needs more of a barrier against leaking than the R12 hose has.
What is the replacement refrigerant for R-134a?
Instead of a phase out, R-134a will be economically starved out of existence. To date, most auto manufacturers are using the hydrofluoroolefin (HFO) refrigerant R-1234yf as the replacement of choice for R134a. The 2013 Cadillac XTS was the first U.S.made vehicle to use the new refrigerant.
What is difference between R-12 and R-134a?
Unlike R-12, R-134a does not contain chlorine and does not damage the ozone layer. However, R-134a has a high GWP, which is a relative measure of how much heat a greenhouse gas traps in the atmosphere when compared to the amount of heat trapped by carbon dioxide (CO 2 ).
What kind of refrigerant should I use for my R-12 AC?
Freon™ 134a (R-134a) Refrigerant A Hydrofluorocarbon Retrofit Refrigerant for R-12 Automotive service technicians depend on Freon™ 134a (R-134a) refrigerant, a non-ozone depleting hydrofluorocarbon (HFC) replacement for R-12. Freon™ 134a is the standard in many mobile air conditioning (AC) units, and also replaces R-12 in:
How much does a pound of R-134a cost?
R-1234yf costs around $700 for a 10 lb. cylinder and R-744 costs $68 to fill a 100 lb. cylinder. The cost per pound works out as follows: R-134a at $4, R-744 at 68 cents and R-1234yf at $70 per pound.