A whole house fan will save you a whole lot of money.

During the day, the attic heats up from the sun beating on your roof. At night time, the attic retains this heat for hours, making it nearly impossible to keep your home cool.

Open up the windows and turn on your whole house fan when the temperature outside is cooler than inside your home. The fan is strong enough to pull air in through the windows throughout the entire home and push this air up into the attic! The air pressure will then blow out all of the hot attic air through your roof vents, cooling the attic and your home at the same time.