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    ognat's Avatar
    ognat Posts: 2, Reputation: 1
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    #1

    Jul 24, 2010, 05:55 AM
    Furnace blower motor hums
    I have a 17 year old Trne Furnace and the blower motor hums all the time. The ac unit was replaced a couple of years ago, not sure if the hum started back then
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
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    #2

    Jul 24, 2010, 09:02 AM

    You say humming,Is it just trying to run or is it humming while it runs
    If its not running at all ,you either need a capicitor or the motor is bad
    ognat's Avatar
    ognat Posts: 2, Reputation: 1
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    #3

    Jul 24, 2010, 09:24 AM

    Seems to be running OK, just humming when off. Not sure if I'am getting the same air flow that I used to the house doesn't seem to cool or heat as well as it did.
    back2bed's Avatar
    back2bed Posts: 1, Reputation: 1
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    #4

    Nov 16, 2011, 01:17 AM
    Blower motor has a tiny port on the top, tiny metal port comes out by hand the size of a pencil eraser and sometimes smaller. Anyway pull that little port off and drip some motor oil in it not much about a half a tea spoon. If you can't find this oil port call a repair man and say that the blower fan bearings need oiled , repair is about 100$ to come out and oil motor . If you have a sealed blower motor you will have to replace whole motor , parts plus labor will be around 3-400$.
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