Set your programmable thermostat as high as is comfortable in the summer, and raise the setpoint when you’re sleeping or away from home.
Clean or replace filters on air conditioners once a month or as recommended.
Turn off kitchen, bath, and other exhaust fans within 20 minutes after you are done cooking or bathing; when replacing exhaust fans, consider installing high-efficiency, low-noise models.
During summer, keep the window coverings closed during the day to block the sun’s heat.
Select energy-efficient products when you buy new cooling equipment. Your contractor should be able to give you energy fact sheets for different types, models, and designs to help you compare energy usage. See the efficiency standards for information on minimum ratings, and look for the ENERGY STAR when purchasing new products. by Energy.gov