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.
Whenever possible, use a wooden or fiberglass ladder for outdoor work. Aluminum ladders could be dangerous around electrical lines. Also, stay away from the lines feeding power to your house.