AC QUestions! R-12 retrofit to r134a? 91 Suburban What can I do?

[4xcrazy]

Supposedly Freeze 12 is a blended replacement for r-12 as well, not too fond of the blended freons, but that's just another option if you can find someone to sell it to you. I don't believe it's as regulated as the r-12 and not as expensive,,,also r-404? I think or 408,,,, someone will be able to correct me on that one, supposed to be a commercial refrigerant that is compatible with r-12.

 

[82355]

You can buy R12 here. It's about $40 a can.

Martin

 

[Blue85]

Some may not like hydrocarbon solutions, but I have started filling my vehicles with Enviro safe ES22. It works better than 134 and you will be amazed at how low the price is. What's in the can is proprietary, but it's probably mostly propane. I tried to get some indication by asking about the "blend" and whether I need to refill the whole thing like other blends and they say there is no need for this. In fact, they recommend blowing it in alongside whatever else you already have in there. So my guess is that it's pure propane (not scented and moisture free), possibly with some butane and some pine sol odor added in.

 

[British Slave]

Some may not like hydrocarbon solutions, but I have started filling my vehicles with Enviro safe ES22. It works better than 134 and you will be amazed at how low the price is. What's in the can is proprietary, but it's probably mostly propane. I tried to get some indication by asking about the "blend" and whether I need to refill the whole thing like other blends and they say there is no need for this. In fact, they recommend blowing it in alongside whatever else you already have in there. So my guess is that it's pure propane (not scented and moisture free), possibly with some butane and some pine sol odor added in.

Ain't legal in the US without a complete flushing of the R-12 system. And Enviro- Safe plainly states it is not a "drop in" replacement for R-12.

http://www.es-refrigerants.com/resources/faq/w/id/18/refid/45/t/22a-refrigerant/details.asp

 

[Blue85]

It just means you are supposed to retrofit to R-134 first, then you can "drop-in" the hydrocarbons. A lot of old systems have already been retrofitted and I don't see any clear definition for it.