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    dmbfreek's Avatar
    dmbfreek Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jun 4, 2007, 09:44 AM
    Indoor AC/heating unit making loud noise
    Hi, I have a Day&Night central forced air unit that will make the large duct work that connects to all the smaller ducts to it vibrate and it makes a vibrating noise so loud that we can hear it upstairs. When I first turn the unit on it will be fine but after a minute or so the vibrating begins and after a few minutes, it trips the breaker. Also, I get no cool air from the vents at all. Thanks for any advise.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Jun 4, 2007, 07:22 PM
    I believe you have a blower motor problem. Take the blower panel off and start it up to see if the blower motor works or is vibrating. Also just for fun check your air filter.
    hvacservicetech_07's Avatar
    hvacservicetech_07 Posts: 1,083, Reputation: 75
    Ultra Member
    		  
    #3

    Jun 4, 2007, 08:49 PM
    I agree, sounds like a motor problem, maybe the bearings.
    NorthernHeat's Avatar
    NorthernHeat Posts: 1,455, Reputation: 132
    Ultra Member
    		  
    #4

    Jun 4, 2007, 08:52 PM
    Could just be a mouse or something stuck in the blower wheel, sounds funny but we see it all the time.
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