What is a colder freon or r-134 replacement for your car?

Question

there was a guy that used to install it in your car in town but he was old and now he's not around. He installed it in one of our cars and the air was cold to start with and when he installed this freon replacement in it, it blew out at 13 degrees less with the new stuff. He had a laser thermometer to measure it with, so he could show you before and after.

Answer 1

That's actually incorrect R-14 is the now defunct coolant, what probably happened is he just recharged the system with R-134A using a retrofit kit.

Answer 2

man, there's a lot of contradictions on this answer. most vehicles in the year 1996 were made using R134-a refrigerant. this was due to the fact that R-12 was known to cause ozone depletion. nowadays, every vehicle produced uses R134-a and they all have the same fittings to accommodate a set of gauges and pumps. it is known fact that R-12 is colder, due to the molecular structure of the freon, however, a pound of R-12 is around 200 dollars at your local parts store. most stores don't even carry it anymore. R134-A is about 10 dollars a pound and is considered so environmentally friendly that they can sell it anywhere, even to the do-it-yourselfers.



the problem with R134-A is that humidity and ambient temperature is directly proportional to the degree of your vent temperature. humidity is the enemy. the more humidity, the less efficient your a/c system.



even the freon from autozone is R134-A. you won't find anything different. most of the aftermarket products will sell you "freeze 34" or whatever the catch line is. it's either illegal, or has no difference than the standard 134. my suggestion is to take your vehicle to a dealership to have the a/c system serviced. they have the equipment to properly evacuate your system (removing all air) and recharge with pure R134-A refrigerant.

Answer 3

If ur car uses r-134a auto parts stores sell bottles with the hose and gauge on it for about 26 bucks most of them have a booster in them that make them colder. If ur system was or is an r-12 if it has been COMPLETLY evacuated u can buy an adapter to fill the system with the 134. Its easy to do and takes 5 min

Answer 4

Actually, R12 was the old auto refrigerant and R134a is the new one. Systems that were designed from the ground up for R134a work fairly well, but not as well as the old R12 systems. Properly retrofitting an R12 system for R134a is expensive - we paid $1200 to have it done to our Volvo. New compressor, new receiver/drier, new fittings. It still didn't work as well as the R12 system did. The conversions that don't do more than replace the receiver/drier, oil and refrigerant with screw-on adapters for the fittings are the worst.

R12 is very expensive now but if your system is designed for it, that is your best way to go.

Answer 5

It all depends on the pump. Freon is colder, but the pumps that are made to run r-134 run more efficient to make up for it.

Answer 6

R-22 is more than 40% better than r12(freon) for cooling. the latent heat of vaporization for freon is 166.95 kJ.kg-1 and for r22 it is 233.95 kJ.kg-1

but that does not necessarily mean it will work with the existing seals for your system and I would warn against its use without checking laws in your area first

Answer 7

It's not the refrigerant, it's the installation and quantity. R 134 is now illegal in most places from ozone danger. Most installers, who are (legal) by the way will use the approved proper refrigerant.