I want to convert my Auto a/c from R-12 to R-22. What do I need to do?

Question

I prefer a colder a/c and I have had a different car previously, same make, model, and year, and the a/c got a leak and shut down. I convertied from R-12 to R-134a and the a/c wasn't as cold. I later got rid of that car and got another car which was the same year and everything. 1992 Cadillac Sedan Deville. I had a friend who is HVAC certified and has a 608 license. He converted his blazer from R-12 to R-22 and it was damn cold. I want to do the same with my Cadillac now that I have sprung a leak in the condenser. After I have the condenser replaced and have the system checked again for leaks, I want to convert the system to R-22 after my mechanic is sure ithe system is leak free. Since my old friend is no longer my friend and has moved away, I am having some mechanic do it who is ASE a/c certified as well as HVAC. He said the change-over will not be much of a problem. What exactly is involved. I know R-22 is more expensive and being phased out. Not concerned about that.

Answer 1

You're barking up the wrong tree. Any refrigerant will cool down to 34 degrees or so if it's installed right. Any colder and the coil will freeze into a solid block of ice. If the 134 didn't work well it's because it wasn't done right. You didn't get all the moisture or air out of the system or ahd a bad compressor or too much or little lubricant. It's not that easy to do.

Answer 2

R-12 is lots greater efficent yet extremly high priced and unlawful in some states. the version between R-12 and 134A is a molecular difficulty as a ways because of fact the cooling is going. image this, in case you have a bucket finished of golfing balls and a bucket finished of basketball. R-12 are the golfing balls and 134A the basketballs. The golfing balls disperse warmth far greater useful as there is greater floor for the air to flow over and draw warmth out of because of spacing between balls/molecules. ok, adequate of that. A conversion kit will artwork, how useful relies upon on the size of the condensor--radiator thingy. you should effectively evacuate latest freon from gadget after which take the compressor out of the vehicle. as quickly as you're taking it out, turn it on its section and drain all the oil out of the compressor after which reinstall compressor back into the vehicle. bypass on your community autoparts keep and get the retrofit kit with new o-rings. replace all o-rings and tighten to make particular no leaks; do no longer overtighten and shrink new rings. in case you do, no longer too huge of a deal as 134 is fairly much less costly. purchase a pair of cans of 134A and the mandatory gauges. The unfashionable kit gauge works effective; approx $25-$30. examine the label decrease than your hood to be certain how lots to place into the gadget. shop the gauge interior required psi. Too little and it wont cool, too lots and it wont cool the two. Too answer a pair of questions. a million) will the conversion artwork? it extremely is unquestionably extremely worth a attempt. i've got had great effects on the vehicles I even have converted. 2) are you able to do it your self? no longer too dificult while you're a minimum of 0.5-way robotically vulnerable.