when I was growing up , we had a big ole attic fan that when it was turned on ....after the windows were raised , cooled you off to the point of huntin cover after a little while. sounded like a B-52 drawin a breath. When hurricane opal came thru , we were without utilities for about 2 wks. We raised the windows and slept like babies.....after we got used to it. Reckon how our grandparents got by......with out all this new hi-tech gizmotism ?