Killing mold in furnace pipe...

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Old 12-14-12, 07:01 AM
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Killing mold in furnace pipe...

My father-in-law says he pours Drano down the pipe attached to his furnace (see the pipe in the right-hand area in the link below). Another person says they pour vinegar water down a similar pipe in their furnace. They say they do this to kill mold. I've never heard of such a thing.

What is this pipe (in the pic) for, and is it ok to pour vinegar water or Drano down it? If so, how often should it be done?

http://i1098.photobucket.com/albums/...ps05138a9b.jpg


Thanks,

Andy
 
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Old 12-14-12, 07:33 AM
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Do you have mold in your drain now? We use a bleach and water solution to clean out mold in the furnace drains of a 90% + condensing furnaces, but then we flush it out. Your furnace is an 80% type that doesn't have a drain system. The pipe in the picture is T' ed off the a/c evaporator coil drain. You are brave if you put drain cleaner in plastic pipes connected to your a/c.
 
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Old 12-14-12, 12:19 PM
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When you clean the coil the cleaner will clean the drain. Professionals should not use bleach on an HVAC system.
 
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Old 12-14-12, 01:11 PM
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Only when factory approved on certain units. (poster notes "furnace" drains)

I don't recommend doing this yourself, better to hire someone since the bleach fumes can be dangerous


How to Clean Out an HVAC Drain Line | eHow.com



 
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Old 12-14-12, 01:41 PM
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professionals should not do this because bleach is not EPA approved for use in HVAC systems.
 
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