We have a fan at one end of the attic outlets (vent with screen), and plug it into an outlet when we want to run it. Also, when our AC wasn't working, I would put a quilt over the drapery rods to cover the hottest windows during the summer. We did have mini blinds on the windows, but the quilts dimmed the windows and cut down on the heat coming in. And at night, when the air outside gets cooler, I put a fan in the hall, and if you have it in the right spot, with the bedroom windows open, it will pull the cool air in. Cheaper than running the air all night.