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    mad_dan's Avatar
    mad_dan Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jan 10, 2011, 04:13 PM
    Keeprite furnace parts?
    Rumbling noise from the furnace when it kicks in and while it's running
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #2

    Jan 10, 2011, 04:32 PM
    Sounds like a bad bearing in the motor or blower cage assembly, perhaps a support bearing if so equipped. In some older models, a loose fanbelt or motor will cause this sound.
    robertecohen's Avatar
    robertecohen Posts: 1, Reputation: 1
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    #3

    Mar 10, 2012, 11:35 AM
    I am going to guess that you're combustion chamber motor bearing is failing. I'm on my 2nd motor on a 4-year old furnace. I'm suspecting a design flaw. I won't be surprised if I have to change this motor in 4 more years again.
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