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    david bsrron's Avatar
    david bsrron Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Nov 25, 2012, 01:27 PM
    Electric furnaces
    My furnaces buzzes when comes on. Coming from contacts I believe
    PJmax's Avatar
    PJmax Posts: 70, Reputation: 3
    Junior Member
    		  
    #2

    Nov 25, 2012, 01:57 PM
    It could be coming from the contactor that connects the incoming power to the heating coil(s). Could be a sign of it going bad, Some contactors just normally buzz lightly.

    You'll need to open service door to determine exactly where noise is coming from.
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