Cleaning the condensate drain...

Old 11-06-12, 03:43 PM
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Cleaning the condensate drain...

My father-in-law has a gas furnace with what he says is a condensate drain coming up beside it. He said he pours Drano down it ever so often to clean it. Is this necessary? Is Drano safe to pour down it? Should he be using some other cleaning agent?

This is new to me, so I just want to make sure he's not damaging anything.


Old 11-06-12, 05:46 PM
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I use bleach to eat the algae that grows inside the pipe.
Old 11-07-12, 08:55 AM
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Might not be hurting anything...but bleach is cheaper and works fine. I knew a guy who would break up a chlorine tab for his pool and just drop a chunk in the cleanout for his drain a couple of times during the season. I think they also make small aspirin size tabs that do the same thing.

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