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Red flakes of tissue-like material are blowing out of our heating system's ducts. Any idea what this is? What can be done to prevent it?

by LiveModern Webmaster last modified Jan 04, 2012 02:08 AM
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by last modified Dec 23, 2010

Last year we experienced "Dirty Socks Syndrome" in our home and a specially coated heating coil was installed which took care of the objectionable odor. Later in the heating season, red flakes of tissue-like material started blowing out of the air ducts. The contractor cleaned up the unit and had the material analyzed. The analysis indicated the material was an algae. We thought the problem was fixed, but with the start of this year's heating system, the red flakes are blowin




Check the condensation pan and drain for the cooling coils. They may not be draining properly, allowing the water to become stagnant and algae to form.

When the heating season begins, the water is evaporated and the algae flakes off, exiting through the vents into your house.




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