No central air? Try this hack!

If your home can't accommodate central air conditioning, try a whole-house attic fan. This device pushes hot air out through attic vents, lowering the temperature throughout your home about five degrees in less than ten minutes. Attic fans cost less than 25 cents per day to operate.

http://www.powerhousetv.com/Energy-EfficientLiving/Energy-savingsTips/027471