“what is the best setting for the outside air vent? open or closed?”

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• The best setting for maximum cooling is to have the outside air vent closed. If you want to introduce fresh air into the room, open is the way to go. You can also use the ac on the "fan only" setting with the air vent open to draw in cooler outside air, if desired.

  Answered by Jack 10 years ago

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• I recommend drawing fresh air at night when it is cooler and switching to inside air during the day for efficient cooling

  Answered by hog1 10 years ago

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• Try both and see which one works best for you. It is like you are asking me which is better for you; an apple or a pear? Depends on what you like.

  Answered by MDUSA1 10 years ago

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