Heat Pump Question


Old 12-01-02, 11:14 AM
Joe UnCool
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Unhappy Musty smell in Air Conditioning is on

Have a small problem. House has central heating and air using a heat pump.

Since it has been rather cool her in Texas, we have not had the air conditioning on. However, I was going to turn it on the other day when we had a crowd of people coming in for Thanksgiving to ensure we would cool the place down. When the air conditioning came on the air smelled very musty. I have tried it several times since and the same thing happens. I even left it on for over an hour and the same result occured.

Does not smell like that when the heat is turned on and blowing on or when the blower motor is on.

Any clues/hints?

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Old 12-01-02, 11:35 AM
GregH's Avatar
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Location: Manitoba
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Received 9 Votes on 9 Posts
Joe UnCool:

There is a possibility that the evaperator coil and drain pan which is located in the furnace, has a buildup of mold or dust. You wouldn't likely notice it on heat as it would dry it out.

The cure for this would be to open up the ductwork and thoroughly check the coil and pan.
Also may be a good time for a professional duct cleaning.

Post back if you need more info.

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