Expansion Valve Recall - To do or not to do?
06-13-2006, 04:01 PM
#21
Contributing Member
I had my valve replaced years ago, they converted the a/c to 134 and its just don't seem as cold as the R12 was. I wish I knew of the recall way back then. could have saved me some money. by the way, I do not think that any shop will refill with R12 anymore. They will simply convert your system to 134 if you bring it to be repaired.
06-14-2006, 06:52 AM
#22
Registered User
R12 is more efficient than R134, but the clorine in it depletes the ozone layer.
The fun part is how R12 got banned in the US. You can blame Dupont for that. Dupont lobbied congress to have R12 banned because it was dangerous to the ozone layer -- this despite the fact that Dupont held the patents to R12. Why would they do this when they held the patents? Because the patents on R12 were about to expire and the patents on R134 were still fresh. So they get R12 banned, comne to the rescue with R134 as a substitute and profit.
It turns out there is a cheap alternative to R12 and R134 -- isobutane! If you use an isobutane mix (I think the other gas is propane), it cools just as good as R12 and is dirt cheap. This blend is used in many overseas cars, but it's banned from use as a refrigerant here in the US. There were accusations that cars would be exploding if they turned on the A/C.
R12 is still available, but it's around $100 a pound now.
The fun part is how R12 got banned in the US. You can blame Dupont for that. Dupont lobbied congress to have R12 banned because it was dangerous to the ozone layer -- this despite the fact that Dupont held the patents to R12. Why would they do this when they held the patents? Because the patents on R12 were about to expire and the patents on R134 were still fresh. So they get R12 banned, comne to the rescue with R134 as a substitute and profit.
It turns out there is a cheap alternative to R12 and R134 -- isobutane! If you use an isobutane mix (I think the other gas is propane), it cools just as good as R12 and is dirt cheap. This blend is used in many overseas cars, but it's banned from use as a refrigerant here in the US. There were accusations that cars would be exploding if they turned on the A/C.
R12 is still available, but it's around $100 a pound now.
06-14-2006, 07:48 AM
#23
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Originally Posted by InternetRoadkill
R12 is more efficient than R134, but the clorine in it depletes the ozone layer.
The fun part is how R12 got banned in the US. You can blame Dupont for that. Dupont lobbied congress to have R12 banned because it was dangerous to the ozone layer -- this despite the fact that Dupont held the patents to R12. Why would they do this when they held the patents? Because the patents on R12 were about to expire and the patents on R134 were still fresh. So they get R12 banned, comne to the rescue with R134 as a substitute and profit.
It turns out there is a cheap alternative to R12 and R134 -- isobutane! If you use an isobutane mix (I think the other gas is propane), it cools just as good as R12 and is dirt cheap. This blend is used in many overseas cars, but it's banned from use as a refrigerant here in the US. There were accusations that cars would be exploding if they turned on the A/C.
R12 is still available, but it's around $100 a pound now.
The fun part is how R12 got banned in the US. You can blame Dupont for that. Dupont lobbied congress to have R12 banned because it was dangerous to the ozone layer -- this despite the fact that Dupont held the patents to R12. Why would they do this when they held the patents? Because the patents on R12 were about to expire and the patents on R134 were still fresh. So they get R12 banned, comne to the rescue with R134 as a substitute and profit.
It turns out there is a cheap alternative to R12 and R134 -- isobutane! If you use an isobutane mix (I think the other gas is propane), it cools just as good as R12 and is dirt cheap. This blend is used in many overseas cars, but it's banned from use as a refrigerant here in the US. There were accusations that cars would be exploding if they turned on the A/C.
R12 is still available, but it's around $100 a pound now.
I LOVE this forum! I've never learned so much in my life as in the few weeks since I've been on Yotatech. Thanks for the history lesson, Roadkill!
08-27-2017, 02:06 PM
#24
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R-12 expensive
Here's food for thought. If freon is heavier than air, how does it hurt the environment?
Ummm, R12 is super expensive, but still available. I'd personally not touch it. If you don't take it into the dealership they can't cross you off their list so to speak. Hence if your ac really did fail a year or two from now, you'd still qualify for the recall.
Ummm, R12 is super expensive, but still available. I'd personally not touch it. If you don't take it into the dealership they can't cross you off their list so to speak. Hence if your ac really did fail a year or two from now, you'd still qualify for the recall.
08-27-2017, 02:11 PM
#25
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Years ago bought up a lot of cans of R-12 plus being in the A/C business ended up with about 3-30 lb drums of the stuff but it has been collecting dust ever since as my vehicles have 134A plus my old refrigerators with R-12 never seem to break down.
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