Heat pump cold weather operation

Discussion in 'HVAC Heating & Cooling' started by John in herndon, Feb 6, 2010.

  1. John in herndon

    John in herndon New Member

    May 27, 2007
    Hello all,

    Heavy snow has come to the Washington area and my heat pump is icing up heavily. My question; should I set the system to use the Aux electric heat exclusively for the duration of the storm or can I allow the compressor to continue running even though the coils are heavily iced up?

    Thanks for any advice.

    John in Herndon (VA)
  2. SteveW

    SteveW DIY Senior Member

    Feb 11, 2005
    Omaha, NE
    I was told by an HVAC tech not to let the heat pump run when the coils are covered with ice or snow, as this causes the refrigerant pressure to run higher than normal (and of course it won't be very efficient under those circumstances, either.)
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