Gas and Oil Home Heating Furnaces - Duct noise
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09-25-00, 10:54 AM
I have a very high-pitched noise when the furnace is running in either heating or cooling mode. I thought it was a bad motor bearing, so I removed the blower and motor and cleaned everything and checked for a bad bearing but everything was fine. I don't hear the noise at the furnace itself but in the ducts through out the house. Any thoughts? Thanks
09-25-00, 06:21 PM
sounds like a restriction in your duct work, maybe a damper that has closed, a dirty filter, or maybe something sucked in to the coil...