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

    Dec 18, 2007, 07:48 AM
    Knocking furnace
    Furnace knocks every 10 secs need to know what is happening
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Dec 18, 2007, 08:45 AM
    What model number?
    What Brand?
    Does it knock all the time?
    Does it knock when running?
    Does it knock at night?
    Does it knock during the day?
    What does the knock sound like?
    Is it a metal knock?
    Does it sound like a wood door knock? If it does sound like a wood door knock check the doors because it is cold outside.

    More information would be nice if you want any help with this.
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