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    jetters50's Avatar
    jetters50 Posts: 24, Reputation: 1
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    #1

    Aug 12, 2010, 07:21 AM
    Air conditioning
    I have central a/c in my house; this summer the unit outside has sometimes been making a loud, grinding noise when it comes to a stop. When a repairman came out to check in June, it didn't make the noise for him to hear so all he did was check the fre-on and said everything was okay with it.

    Recently, when it does make this noise, it will now continue with a loud, metallic squeal for up to 30 seconds or more. The unit inside works properly and continues to cool. What could be causing this terrible screeching sound?
    BBsHVAC's Avatar
    BBsHVAC Posts: 4, Reputation: 1
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    #2

    Aug 16, 2010, 04:42 PM

    First guess fan motor bearing going out

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