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    lee8134's Avatar
    lee8134 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Oct 24, 2007, 10:36 AM
    Hot water heating-l
    Loud knocking sounds- plumber says no leaking in old section- newer sunroom- perhaps there- how to find out- must rip up new floor to get under sunroom
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Oct 24, 2007, 04:24 PM
    Bleed air out of system. Then check to make sure system holds the water pressure it is designed for. You can use a special tool to check for leaks without tearing up the floor. Most companys do not have this electronic tool. You will have to call around to find a company that has one.
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