Furnace Fan Noise


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Old 04-13-08, 09:12 AM
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Question Furnace Fan Noise

I recently replaced our furnace fan on our Coleman furnace. It is louder than our previous fan. There is also a humming noise that gets gradually louder, but often stops before the blower comes on. At times I can hear the hum again when the blower is on.
Any suggestions would be appreciated. Thanks, Bryandshell
 
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Old 04-14-08, 06:58 PM
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Was this an identical replacement?
The humming prior to the blower starts may be an indication of a motor having trouble getting the fan wheel to pick-up speed...maybe your new motor is undersized.
 
 

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