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

    Sep 14, 2011, 03:46 PM
    Furnice blower hum
    We have a rheem furnice that constantly hums. The motor will turn on and off like it should but still hums when off.
    Normally when a motor hums it is stuck but not this time.
    cdad's Avatar
    cdad Posts: 12,700, Reputation: 1438
    Internet Research Expert
    		  
    #2

    Sep 14, 2011, 04:53 PM
    Transformers can also cause humming noises and vibration on the body of the unit. Have you checked that or tried putting a glass half full of water on the outside and see what the vibrations look like? (do not pour out the water )
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