Posted: 6/11/2011 4:03:28 PM EDT
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My A Coil has a small leak that can't be brazed and was wondering if this stuff really works?
www.nucalgon.com |
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I worked a few years in HVAC and am certified with refrigerant use.
I am not saying it may not work. I just never tried it on anything. We always fixed the leak or replaced what was leaking. That is the right way of correcting the leak. You will probably still need a gauge set to access the system. It would have to be added to the low/suction side. Which then will go directly into your compressor. Then thru the liquid line down to your coil. But before it goes into your coil it would have to go thru your metering device which is a small restriction. I would hope it does not clog that. Then your screwed. I would stay away from this stuff. Why can't the coil be brazed? |
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Don't do it, just replace the coil. I don't do stationary systems only mobile but I can tell you while these miracle cures may temporarily seal, it will lead to system replacement in the end.
But since you did ask I will be honest and say I have seen sealers seal small leaks. I've also seen it seal other shops recovery machines solid too. So if you do decide to use it, please mark your system and be forewarned if the sealer fails or you need to open the system anytime in the future, full system replacement is necessary to fix the fix. Most A/C techs I know will tell you sealers are the spawn of the devil and you shouldn't even speak of them and while I'll agree to a certain extent it is your stuff and you can do whatever you want. |
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Slightly unrelated, but I just got done pulling a windshield out where the rubber gasket had tons of sealer on it. My dad and I were cursing the bastard who used that sealer the whole time. The rear windsheild was out in 10minutes since they didn't use sealer there.
Sealer is a last resort fix when you either can't do it the right way or don't have time to do it the right way now, but are willing the pay the price of no time now, later on when "the topic" comes up again. |
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Quoted:
Don't do it, just replace the coil. I don't do stationary systems only mobile but I can tell you while these miracle cures may temporarily seal, it will lead to system replacement in the end. But since you did ask I will be honest and say I have seen sealers seal small leaks. I've also seen it seal other shops recovery machines solid too. So if you do decide to use it, please mark your system and be forewarned if the sealer fails or you need to open the system anytime in the future, full system replacement is necessary to fix the fix. Most A/C techs I know will tell you sealers are the spawn of the devil and you shouldn't even speak of them and while I'll agree to a certain extent it is your stuff and you can do whatever you want. this. just replace the coil |
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I have seen the results when other people have used this type of "fix". All I can say is that they aren't real good. They tend to do more damage than good. It tends to want to clump together inside the system and actually ends up forming more of a restriction at times than actually plugging a hole.
+1 for the "fix it the right way" and replace the A-coil. |