question about window AC unit

Discussion in 'Homesteading Questions' started by kentuckyhippie, Jul 20, 2006.

  1. kentuckyhippie

    kentuckyhippie Well-Known Member Supporter

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    I got a second hand window unit and it has an open/close switch for exhaust. would someone explain what that does and should I have it open or closed when I am running the ac?
     
  2. big rockpile

    big rockpile If I need a Shelter

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    :shrug: I have a New One,got the same ??? because it didn't say.

    big rockpile
     

  3. Unregistered

    Unregistered Well-Known Member

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    Are you sure it is an exhaust? Many window air conditioners have an open and closed intake. In the open position it allows air to be brought in from outside cooled and circulated through the room. In the closed position the air for cooling is circulated from inside the house.
     
  4. Bearfootfarm

    Bearfootfarm Hello, hello....is there anybody in there.....? Supporter

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    Opening the exhaust vents air to the outside which means any new air comes IN from the outside too. Closing the exhaust means youre recirculating the room air. With the exhaust open youll lose some of your cool air. The "intake" is on the inside of the room. Unless you live in a hermetically sealed container having the exhaust open will draw air in from the outside through any openings in the building
     
  5. agmantoo

    agmantoo agmantoo Supporter

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    For efficiency run the setting to closed. The home will be cooler and it will use less power. If you need to refresh the air inside shift the setting to open. Most houses have enough infiltration to permit closed operation 24/7.
     
  6. oldmanriver

    oldmanriver Well-Known Member

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    Kinda the same thing with the max air setting on your car . With it open you are pulling hot air out and cooling the incoming air .. After the house starts to cool a bit switch it to close then you are cooling the inside air only much cheaper that way . Most people just run themclosed all the time .
     
  7. frogmammy

    frogmammy Well-Known Member Supporter

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    When the AC man serviced the ac this year I asked him that same thing...he say keep it open if you have *just* the fan portion on, and have it closed when your ac portion is on. (save money!)
    Mon
     
  8. uncle Will in In.

    uncle Will in In. Well-Known Member Supporter

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    The window AC dehumidifies the air in the house. Leaving the vent open pulls in more outside air. If the humidity is high, it raises the inside humidity. (Not good) If it is really hot outside the unit has to cool the hotter air making it run longer. More elect used.
    If you want your house aired out, open the windows early in the morning if the outside temp isn't hotter than you want your house to be.