has anybody done this before I lostr all my gas when installing a new engine now I need to either put old r-12 back or should I go with new stuff (134-a) what are your personal experiencies with this
zxjet
- Status
Personally, I prefer R-12 because it works much better than R-134A. A word of caution: R-12 and R-134A do not mix. If you're using the same system you had before, do not put R-134A in because it will mix with what's left of the R-12 and form a very corrosive by-product. When we work on air conditioning systems, we will not touch a system unless it is clear that it is an R-134A system, because if we take the chance and we're wrong, it will ruin our machine, which is very expensive. So unless you're getting an entirely new system, I'd stick with R-12.Tyson(280z) wrote:
experiences
I agree that you have to completly seperate the two.
But if you properly change to 134A you will save yourself a big headache in the longrun.
Thousands have already changed over to 134A with the proper tools. As long as you do what it says in the manual, you should be good to go.
If it says replace your compressor oil, do it
If it says replace a few lines, do it.
Even if it does not tell you to pull a deep vacuum, do it.
I agree that you have to completly seperate the two.
But if you properly change to 134A you will save yourself a big headache in the longrun.
Thousands have already changed over to 134A with the proper tools. As long as you do what it says in the manual, you should be good to go.
If it says replace your compressor oil, do it
If it says replace a few lines, do it.
Even if it does not tell you to pull a deep vacuum, do it.
Re: experiences
Make the changeover. R12 is only going to get more scarce and MUCH more expensive. In most cases the changeover can be done completely by a competant a/c shop (hoses, dryer, new CORRECT oil, maybe even compresser seals if needed, correct 134 fittings, vac draw down and recharge) for about the same money as it will cost you JUST for the R12 fillup. Ok maybe a bit more, but not much. Let's say your system takes 4 lbs of freon, at AT LEAST $80/lb you are at $320. I believe you can get a complete system changeover for vicinity of $350-$400. Shop around, and I think you will find shops that can do this for you reasonably. There are even some alternative 'freons' out there, but there is a lot of debate about them.
Check out this site, there are lots more like it out there.
http://www.aircondition.com/wwwboard/index2.htm
Make the changeover. R12 is only going to get more scarce and MUCH more expensive. In most cases the changeover can be done completely by a competant a/c shop (hoses, dryer, new CORRECT oil, maybe even compresser seals if needed, correct 134 fittings, vac draw down and recharge) for about the same money as it will cost you JUST for the R12 fillup. Ok maybe a bit more, but not much. Let's say your system takes 4 lbs of freon, at AT LEAST $80/lb you are at $320. I believe you can get a complete system changeover for vicinity of $350-$400. Shop around, and I think you will find shops that can do this for you reasonably. There are even some alternative 'freons' out there, but there is a lot of debate about them.
Check out this site, there are lots more like it out there.
http://www.aircondition.com/wwwboard/index2.htm
Re: experiences
Geeze,I hate to go againsed the trend here and please don't get me wrong;I'm all for protection of the enviroment(a consideration not yet identified here),BUT...I was told by an expert in this field that the newer stuff (r-134a) would make my Air-Conditioning System 14%(or 18%,sorry,I can't recall the exact figure,it's been 3 years ago) LESS effecient(than with r12).That was a no-brainer for me(because life in Fla.is most often like living in a sauna).I had just had to replace a very expensive(A/C) hose,and had to have the system evacuated&refilled,and since the whole system was fairly new(and with any luck,I would not have to go through this again anytime soon),it was an easy decision for me.I believe the shop charge was under $200.00.However if, for whatever reason, you suspect( or expect)you may have to open the system up sooner,rather than (much) later,you(and we) would (all) be better off if you used r-134a,and you will be able to just fill-er-up or top-er-off as needed,quickly and inexpensively;then just jump in and(more or less) cool out.
Geeze,I hate to go againsed the trend here and please don't get me wrong;I'm all for protection of the enviroment(a consideration not yet identified here),BUT...I was told by an expert in this field that the newer stuff (r-134a) would make my Air-Conditioning System 14%(or 18%,sorry,I can't recall the exact figure,it's been 3 years ago) LESS effecient(than with r12).That was a no-brainer for me(because life in Fla.is most often like living in a sauna).I had just had to replace a very expensive(A/C) hose,and had to have the system evacuated&refilled,and since the whole system was fairly new(and with any luck,I would not have to go through this again anytime soon),it was an easy decision for me.I believe the shop charge was under $200.00.However if, for whatever reason, you suspect( or expect)you may have to open the system up sooner,rather than (much) later,you(and we) would (all) be better off if you used r-134a,and you will be able to just fill-er-up or top-er-off as needed,quickly and inexpensively;then just jump in and(more or less) cool out.
No question about it!
I had the same problem as you. I was aware that putting the new stuff with the old stuff would make a corrosive by product. I didn't want that.
So I asked the guy at O'Reilly's what he would do. He suggestion an alternative freon called "Freeze 12."
I put the stuff in almost a year ago and I'm in a blizzard. Just wish the **** blower would blow more air.
I had the same problem as you. I was aware that putting the new stuff with the old stuff would make a corrosive by product. I didn't want that.
So I asked the guy at O'Reilly's what he would do. He suggestion an alternative freon called "Freeze 12."
I put the stuff in almost a year ago and I'm in a blizzard. Just wish the **** blower would blow more air.
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