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    cressonmom's Avatar
    cressonmom Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Dec 3, 2009, 05:28 AM
    Site:askmehelpdesk.com coleman heater aircondition.com
    Yes I'm buying a 1000 ft 2bedrm house and the people who owned it before had a new coleman ac and heater and during the summer everything fine and dandy but now that I'm running the heater every so often after the heater runs it makes a nosie like an old dying hissing machine is this normal ? Cause if not have not signed all the papers and well need them to have it checked out before signin
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Dec 3, 2009, 06:46 AM
    If it is a heat pump system it is possible the noise is somewhat common BUT I would have it checked by a professional on site just to make sure. Upon shutoff refrigerant movement can make that type of noise especially with a bleed style expansion valve..
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