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    TSQ's Avatar
    TSQ Posts: 2, Reputation: 1
    New Member

    Jun 21, 2005, 01:14 PM
    Furnace making noise when it start (sound like a generator)
    Hello experts,

    I have a Lennox Signature series furnace which is about 9 years old. Since last window, it make a very loud noise when it start. The noise sounds like a power generator making humming sound.

    I would to have some idea where to look at before calling technician.

    Thank you.
    labman's Avatar
    labman Posts: 10,580, Reputation: 551
    Uber Member

    Jun 21, 2005, 08:33 PM
    My guess is the blower motor is going bad. It is possible finding an place to add oil and adding a little of a light machine oil might give it several more years.
    TSQ's Avatar
    TSQ Posts: 2, Reputation: 1
    New Member

    Jun 22, 2005, 01:52 PM
    Thanks Labman, I will put couple drops oil. Hope that could eliminate the noise.

    For give my typo from my original post, I meant last winter, not window. :)

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