AC and Heat Pumps

  1. On a hot day the AC in my car starts working immediately pumping cool air, on a cold day I have to wait till the cooling system heats up before I get warm air. It would be perfectly possible (with the aid of a couple of solenoid valves) for the AC unit to run as a heat pump providing immediate warmth, why don't motor manufactures fit a system like that? Is it just cost?
     
  2. jcsd
  3. dlgoff

    dlgoff 3,032
    Science Advisor
    Gold Member
    2014 Award

    So you don't want to use the heat generated by the engine; just loose it?
     
  4. russ_watters

    Staff: Mentor

    It is a big expense for something only used for 5 min per day.
     
  5. Yeah it's pretty much the same old story. Anything that is physically possible can be done, but at a cost.
     
  6. Simple fix, and it's found in most hybrid cars and some diesels...PTC heater.
     
  7. My son in law in the cold north, uses a remote starter.
    Starts his car about 5 min before he gets out of work.
    This method also works for cooling the car down in summer.
    It does cost some extra fuel, but if it's -20F, it's worth it.
    The answer to your original question is Yes it is possible,
    but the engine heat is already there, no need to squeeze
    your own out of the air.
     
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