• A new, high efficiency, 13 SEER air conditioner uses about half the energy of a 15-year-old air conditioner. If your air conditioner is 10 years old or less, maintain it well and keep it. If it is between 10 to 15 years old, minor repairs and service are still acceptable. If the air conditioner is 10 to 15 years old or older and needs substantial repairs, your best alternative is to replace it with a new, high efficiency system.
  • Turn air conditioners to the highest comfortable setting. We recommend 76 to 78 degrees Fahrenheit when you're home and 80 degrees while you are away. Adjusting your thermostat up a few degrees will have a significant impact on your cooling bill. A change from 73 degrees to 76 degrees -- 24 hours a day -- could save you approximately 30 percent on your summer cooling costs.
  • Clean or replace your air conditioning filter monthly, or as needed.
  • Keep coils on the exterior air conditioning unit free of dirt, grass clippings and leaves.
  • The “on” fan setting on your central air conditioner can circulate air continuously through your home. This will usually even out the hot spots in your home, and if this practice allows you to set your thermostat at a higher summer temperature, it can also save you money.
  • Humidity is a significant load on an air conditioner. While it’s tempting to give your air conditioner a rest on cool nights, watch the weather forecast before you decide to open the windows at night. If tomorrow is going to be hot again, keep the air conditioning on and the home closed through the night to keep the humidity out of the house.
  • Have your air conditioning system checked annually by a qualified heating and air conditioning contractor to make sure its working at peak efficiency.