06-20-2008, 11:28 AM
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Registered User
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Join Date: Jun 2008
Posts: 835
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Quote:
Originally Posted by wbain5280
Buy some rolls of car audio sound deadening sheets, like Dynamat, and cover your furnace ductwork. Clean the ductwork first and check it for resonance. Cover the spots that vibrate the most.
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Checking the ducting for vibration is a great suggestion. The current ducting has a coat of fiberglass insulation on the outside. I don't know that additional treatment on the outside will help reduce noise. (I’m sure it will help reduce heat loss!) But I definitely want to be sure none of the noise is the result of a sympathetic vibration resulting from the burners.
The real problem is when the burners first off and before the fan engages. After the fan engages you can’t hear the drum roll any longer.
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