This Summer Make sure your central air conditioning system or window unit is properly sized for the space it is intended to cool. Improperly sized units use more energy than necessary. Remember that window air conditioning units generally are not designed to cool more than one room. Clean or replace window unit or central air conditioning system filters monthly.
Dirty filters cause air conditioners to work harder and use more energy.
Check weather stripping around doors and caulking around windows. Properly sealed doors and windows help prevent warm outside air from entering the home. Close blinds, shades or drapes during the hottest part of the day to block the sun's heat. If you have a central air conditioning system, do not close off unused rooms or close air registers in rooms. The system will be less efficient and will cost more to operate.