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Question DetailsAsked on 6/10/2017

We have an old Central Air System using R22 , can you buy the Coil for it still ?

We just had the new dryers put on it and filled with R22 , when it's running you can see the water draining through the drain tube but for some reason it starts leaking from the base of drain tube and it goes inside , where it could cause damage to the wood inside . The guy that did the work said he'd be back but hasn't come back yet and it's been two weeks , he works for a company but is doing work on the side also . Don't want him back , I feel he'd come if he could make another 300 hundred dollars or more .

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1 Answer


OK - if you had to add R-22 (other than to replace the very small amounts lost during filter changes) you have a leak - so that is one issue to address if a significant amount leaked out, otherwise you are just going to be paying again and again to replace leaked R-22 - not to mention runnign on low refrigerant level is hard on the compressor and makes for much less efficient AC operation which is also costly both in maintenance/ replacement cost and wasted electricity.

The water does NOT mean you have a coil leak - a normal residential (as opposed to chilled water commercial system) coil has no water inside it to leak out. That water is condensate that forms (especially in humid air conditions) on the outside of the cold coil as the air blows over it - drains down off the coil into the collection pan, then via the drain tubing to wherever it drains into. Sounds like the tubing fitting in the pan is leaking - or maybe you have a pan leak. New/repaired tubing connection (and commonly new tubing at same time because they get crudded up inside with algae and lime and tubing is cheap) likey round $100-200 including labor - new pan if needed because it is corroded out (though there are replacement plastic liners a lot cheaper) can run $20-100 range for the pan, plus $100 give or take for the labor to replace / fit it typically.

Sounds like you need a new HVAC tech - not only because he is undoubtedly cheating his employer (very few employers knowlingly let their employees moonlight in the same field of work), but if he said you need a new coil based on the wter leak (if he said that) is conning you or does not know his job.

And yes you can get new evaporator coils for most in-service A/C systems - though commonly for out-of-warranty coils runs $1000-2000 totoal replacement cost, so the economics of repairing versus replacing with totally new system with new warranty and higher operating efficiency comes into the decision on older systems - lots of previous questions and answers about that can be found in the Home > HVAC link under Browse Projects, at lower left.

Answered 3 years ago by LCD

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