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    deanmi's Avatar
    deanmi Posts: 2, Reputation: 1
    New Member
     
    #1

    Apr 13, 2008, 07:17 PM
    Noisy induced draft furnace blower
    Hello everyone. This is the first time I am using this site.

    Earlier today, I noticed a strange noise from my forced air furnace. I believe it is from the induced draft blower motor due to a bad bearing. I have to admit the noise is not as loud as earlier, and I have not done anything to make it quieter! So I think it will go bad soon. I am wondering whether there is any fire hazard if the blower is seized before I get a chance to change it? Or the system stops flowing gas if the motor stops woorking. Thanks.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
     
    #2

    Apr 13, 2008, 07:57 PM
    No real fire hazard, That little motor has a over current protector in the windings. You might try and run some oil down the shaft to make it last a bit longer or as you said just replace it. Check to be sure no water/moisture is in the fan section causing a problem.
    deanmi's Avatar
    deanmi Posts: 2, Reputation: 1
    New Member
     
    #3

    Apr 13, 2008, 08:16 PM
    Thanks for quick reply.

    Is there any CO danger if the motor malfunctions? The way I understand, this little motor causes the furnace to come on. So if it seizes, the furnace will not stay on either. Is that correct?

    I don't believe Home Depot or Lowe's sell this motor. Where can I order one besides internet?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
     
    #4

    Apr 13, 2008, 08:26 PM
    The motor or entire assembly is available on the net and at one of the local HVAC shops.

    If the motor stops the furnace shuts down.

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