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Question

Living in house that is heated by gas furnace. Right before it kicks on there is a loud bang. What could be wrong?

Submitted: 337 days and 23 hours ago.
Category: HVAC
Value: $9
Status: CLOSED
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Posted by Rick Mather 337 days and 19 hours ago.

Info Request

Is this Warm furnace

337 days and 18 hours ago.

Reply

our house is about twenty years old, orginally gas furnace in crawl space under house. When the furnace kicks on there is a loud bang sound right before. What else do you need to know?

Accepted Answer

Sounds like the duct work expanding and making noise

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Expert: Rick Mather
Pos. Feedback: 96.2 %
Accepts: 
Answered: 12/20/2008

HVAC Technician

35 years experience, HVAC

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