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Air conditioning efficiency tips
 

 

General

Overall Tip

Look for home and office products that have earned the ENERGY STAR® label. These products have
met energy efficiency guidelines set by EPA and the U.S. Department of Energy (DOE). This will save
you money if properly used! The ENERGY STAR can be found on appliances, heating and cooling
equipment, consumer electronics, home office equipment, lighting fixtures and bulbs, and new homes.
In cases where ENERGY STAR® is not available, look for the highest energy savings on the Energy
Guide label.

Heating and Cooling

Heating and cooling your home uses more energy and drains more energy dollars than any other system
in your home. Typically, 44% of your utility bill goes for heating and cooling. No matter what kind of
heating, ventilation, and air-conditioning system you have in your house, you can save money and
increase comfort by properly maintaining and upgrading your equipment. Preventative maintenance,
once for the heating season and once for the cooling season, will help keep your equipment running
efficiently.

You should clean or replace your air filter once per month (ideally) or at least every other month for
maximum efficiency.

If replacing your equipment, look for the ENERGY STAR® or Energy Guide Label. ENERGY STAR®
labeled equipment (if properly used) can save you up to 30-40% on your energy bills.
Programmable Thermostat Tips
• You can save as much as 10% a year on your heating and cooling bills by simply turning your
thermostat back 10% to 15% (7 to 10 degrees) for 8 hours. You can do this automatically without
sacrificing comfort by installing an automatic setback or programmable thermostat.
Note: Use a thermostat that is designed specifically for heat pumps to prevent triggering the backup
heat source, which will wipe out any savings that you will obtain from using programmable thermostats.

Duct Tips

• Check your ducts for air leaks. First look for sections that should be joined but have separated
and then look for obvious holes.
• If you use duct tape to repair and seal your ducts, look for tape with the Underwriters Laboratories
(UL) logo to avoid tape that degrades, cracks, and loses its bond with age.
• Remember that insulating ducts in the basement will make the basement colder. If both the ducts and
the basement walls are not insulated, consider insulating both.
• If your basement has been converted to a living area, install both supply and return registers in the
basement rooms.
• Be sure a well-sealed vapor barrier exists on the outside of the insulation on cooling ducts to prevent
moisture buildup.
• Get a professional to help you insulate and repair all ducts.

Cooling Tips

• Set your thermostat as high as comfortably possible in the summer. The less difference between the
indoor and outdoor temperatures, the lower your overall cooling bill will be.
• Don't set your thermostat at a colder setting than normal when you turn on your air conditioner. It will
not cool your home any faster and could result in excessive cooling and, therefore, unnecessary expense.
• Consider using an interior fan in conjunction with your window air conditioner to spread the cooled
air more effectively through your home without greatly increasing your power use.
• Don't place lamps or TV sets near your air-conditioning thermostat. The thermostat senses heat from
these appliances, which can cause the air conditioner to run longer than necessary.
• Plant trees or shrubs to shade air-conditioning units but not to block the airflow. A unit operating
in the shade uses as much as 10% less electricity than the same one operating in the sun.