Insulated A/C Register - Mold - HVAC - DIY Chatroom Home Improvement Forum

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Old 02-07-2012, 09:23 AM   #1
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Insulated A/C register - mold

I have an insulated a/c register that has black mold/mildew at the bottom couple inches of the insulation and surrounding metal near the vent opening - if I replace the register, how do I prevent this from reoccurring?


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Old 02-07-2012, 10:25 AM   #2
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pictures would help and really are necessary for this forum to do its magic.

without pictures, its just a wild guess, but I would say that somehow water is available to the mold. Mold dont grow without water and food. So eliminate those things and your mold goes away. A picture would help the forum members guide you in tracking down the food and water.


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Old 02-07-2012, 02:28 PM   #3
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There sealed combustion 80% efficient furnaces also.

OP, bring in outdoor air for combustion directly to the furnace is a plus. It help to prevent your house from getting as dry in the winter.
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