Simple no-cost or low-cost changes can make a noticeable difference in a summer utility bill.
Have your air conditioner maintained annually by a qualified technician and check your air filter monthly.
Consider upgrading to an ENERGY STAR air conditioner. If the central air conditioning unit is more than 12 years old, replacing it with an ENERGY STAR qualified model could cut cooling costs by 30%.
Close blinds, shades and draperies to reflect the sun’s heat. Remember that white window coverings reflect sunlight, and dark coverings will absorb the heat.
Reverse the direction of your ceiling fan. By changing the direction to counter-clockwise in the summer, the fan will circulate the cool air
Turn off the ceiling fan when not in the room. Ceiling fans cool people — not rooms. If the room is unoccupied, turn off the ceiling fan to save energy.
Turn up the thermostat. An optimal setting for improved energy efficiency is at or above 78 degrees. For every degree you turn up the temperature, you could save 2% to 3% on your cooling bill.