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

    Jul 7, 2008, 01:41 PM
    Can you use 2 expansion valves in a residential AC unit
    My AC unit is not able to keep the house cool (77 degrees) above 94 degrees outside temp. I found the ac unit has an 2 inline expansion valves, 1 near the compressor and one in the attic at the input of the coil in the attic. Is this recommended, and could it be the cause of inefficient cooling?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Jul 8, 2008, 02:47 PM
    You have a heat pump system. They come with two exp valves.
    A standard A/C unit only has one exp valve.
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