[kcs40826]

My spouse and I have a disagreement about how to most efficiently use the air conditioning in our home. During the summer when the air condidtioning is running, he insists on putting a fan in the 2nd floor window pulling out what he says is hot air. I agree with this philosophy initially when you turn on the air in the house until it comes down to temperature, however he leaves it on 24 x 7even when it's 100 degrees outside. Heat pours into the house requiring the air conditioner to run non-stop.

I feel he is wasting money with this philosophy and insists it has to do with thermodynamics and heat rises and cool falls. Although this is an accurate statement, I feel that the hot air pours into the house though the fan in the window even though the fan is blowing out.

Who is right?

[progunr]

If you have vents that carry the cool air upstairs, he is pulling that cool air out with the hot air.

If you have no vents upstairs, I say his idea may be worth while, especially if you have a way to limit the amount of open space around the sides of the fan.

[tickle]

Sounds like my husband and we don't have AC, so... years ago when he set up fans he would do exactly your husband is doing. But, I liked the fan on me so I can feel the cooling effect. And by the way, his theory is all shot to pieces if he has AC and he ls leaving a window open to pull hot air out. Too much energy being wasted.