1. Keep your air conditioner thermostat as high as you can with comfort.
2. Use a fan when you can; they eat far less energy that air conditioners.
3. Whenever it's cool and fresh outside, say, after a thundershower, crack your windows an inch or two to create a draft that'll refresh indoor air.
4. Apply low-cost, low-E films to window glass, which can save you up to 15% on electricity bills.
5. Close blinds and curtains in peak sunlight hours.
via plentymag
1. Use less hot water.
via ismckenzie