Most Efficient Way to Use an Air Conditioner

Energy Star

• In order to use an air conditioner most efficiently, you should start by investing in an Energy Star-rated unit. Simply switching from an old and outdated air conditioner to an Energy Star-rated unit can reduce your energy usage 20 to 50 percent, which will result in a lower electric bill each month. According to the U.S. Department of Energy, air conditioning is responsible for 5 percent of the country's energy usage each year.

Thermostat

• The thermostat on your new energy-efficient air conditioning unit is the key to saving energy and money. Set the thermostat at a comfortable temperature and let the air conditioner do the rest of the work. It will automatically blow colder or warmer air to adjust to the current room temperature set by your thermostat. Most models also have an energy saver mode, which will turn the unit off when the desired temperature is reached and will turn back on when it needs to cool the room again.

Eliminate the Sun

• Seal off your windows and doors. Eliminate the amount of sunlight that enters the room. This step will help you use less energy to cool the room. The thermostat can reach its desired temperature faster, thus saving money. If possible, install the air conditioner in a shady part of the house. If you have multiple windows, place the air conditioner in the windows where it is hidden from the warm afternoon sun. The sun shining down on the air conditioner makes it work harder.

Maintenance

• Check the filter regularly. It not only improves the air quality of the room, but it also helps the unit work more efficiently. A clean air conditioning filter can reduce energy consumption by as much as 15 percent, according to the U.S. Department of Energy. Inspect the seal between the air conditioner and the window regularly. Eliminate open air spaces where cool air can escape. For outdoor central air conditioning units, keep the condenser coils free of dirt and debris to help the unit work more efficiently.