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Thread: heat pump

  1. #1
    Join Date
    Dec 2005
    Posts
    41
    on a air cooled heat pump, in the winter mode when it is taking heat out of the outside air, is the suction pressure lower, and if it is what does it normally run

  2. #2
    Join Date
    Nov 2000
    Location
    Eastern PA
    Posts
    68,981
    The compression ratio of the compressor is relative to the pressures of the refrigerant in conjunction with the temperatures across both evap and condensing coils, so no, the suction pressures are not necessarily lower in the heat mode.

    There is no "normal" pressure. All functions of a refrigerant system are based on the temperature and pressure relationships between the evaporation of the refrigerant in the evaporator coil and the condensing of the refrigerant in the condensing coil.
    Government is a disease...
    ...masquerading as its own cure
    Ecclesiastes 10:2 NIV


  3. #3
    Join Date
    Apr 2004
    Posts
    7,680
    Yes, compared to a full cooling load, generally the heating mode suction pressure is lower as it gets colder out but as Robo said, there are alot of variables.

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