r134
NO ! and Why?
No, the two cannot be blended.
No, the two cannot be blended.
After 1992- r134A Before 1992- R22 but it need to be retrofitted for R134 if it hasn't been done already. It is ILLEGAL to use R22 in autos.
No, an R134a compressor cannot directly replace an R22 compressor due to differences in refrigerant properties and system requirements. R134a and R22 operate at different pressures and have different lubrication needs, so using an R134a compressor in an R22 system could lead to inefficiency or damage. If converting from R22 to R134a, the entire system, including the compressor, evaporator, and condenser, typically needs to be modified or replaced to accommodate the different refrigerant.
Same thing
Freeze 12 is a replacment for R12. They are not the same thing. How well Freeze 12 works, I cannot say.
It is an alternative to mostly banned CFCs (most infamous of which is R22), and to be phased out in the future HFCs (R410a, R134 and similar). That being said the general consensus is that R600a (isobutane) requires compressors/systems specifically designed for it. The most suitable HC or natural refrigerant substitute for R22 is R290, which although shunned by the industry will perfectly replace it with an efficiency increase of about 20% without any retrofitting or other adjustments.
To determine if a refrigerant charge is correct using R22, you would need to measure the suction and discharge pressure and temperature, calculate the superheat and subcooling values, and compare them to the manufacturer's specifications or recommended values for the specific system. Adjust the refrigerant charge if the measurements are outside the acceptable range to ensure optimal system performance.
No
R134