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    carlaallen2's Avatar
    carlaallen2 Posts: 3, Reputation: 1
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    #1

    Jun 12, 2010, 12:01 PM
    The fan on my 2000 Nordyne Furnace/AC Model M1GC070ABW is really loud.
    When the problem began it was only loud when the fan first kicked in and made almost a clanking noise like something may have been loose. Now it is always loud and running really fast. It almost sounds like an old window fan on high with something to close to the front of it.
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
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    #2

    Jun 12, 2010, 12:15 PM
    Well it would help to know which fan is making the noise. Most heat and air systems have at least 2 fans and sometimes 3. 1 outside in the condenser unit and 1 or 2 more in the furnace.
    Sounds like a possible damaged or loose fan blade wherever it is.. whichever it is you shouldn`t run it till it has been checked out, it could cause even more and expensive damage
    carlaallen2's Avatar
    carlaallen2 Posts: 3, Reputation: 1
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    #3

    Jun 12, 2010, 12:26 PM

    It is inside the furnace.
    carlaallen2's Avatar
    carlaallen2 Posts: 3, Reputation: 1
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    #4

    Jun 12, 2010, 01:14 PM

    It sounds like it may be in the blower motor, that is also the only place I see actual fan blades.
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
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    #5

    Jun 12, 2010, 04:24 PM
    With the power off,, reach in and turn the fan manually is it rubbing or hitting anything? Making a rattling noise of any kind?
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