Ok , lets get back to the basics. Lol. Remember the time.e before the AC and doubble hung windows? You would open the botton windows on the windward side of the home and opposit those open the top half. This was because heat rises. So the wind blowing into the bottom windows created positive pressure that caused the hotter air up above to be pused out the top opened windows. So , it will work to a point to help cool things off. It may not be freezing or cold but it could make it more bearable. I would still use the biggest ac i could fit into the spot. But if thats all you have it will help. Just crack a screen up high, you should do that anyway for condinsation.