AC Bugs

Insects love warm electrical components and air conditioners are full of them. If you want to keep insects out, experts say do not use insecticides, because the electrical components will not like them. One option is to get a special cover for your relay switch, but be aware that it has to be installed by an air conditioning technician. The cheapest (and easiest) way to keep them away is to use a flea collar. To install the flea collar, shut the power off to the air conditioner and simply placed the collar near the relay switch.
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Shaded AC

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.
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Heating & Cooling Dollars

According to the U.S. Department of Energy, in 1997 the average house spent over $1300 in energy costs. 44% of those costs, or about $600, came from heating and cooling. Yet, by setting the thermostat down just one degree a home could, over an eight-hour period, reduce energy costs by 1%. Doesn't sound like much? Look at the math: If you set the thermostat back by 10 degrees for the eight nighttime sleeping hours, and did this for a whole month you could lower your monthly bill by 10 percent. Do the same for the eight hours you're at work and you're looking at 20 percent. For the average home this could mean a $20 savings on the monthly heating costs with similar savings for the cooling season. A programmable thermostat can ensure those savings and pay for itself in one season.
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AC Rating

Air conditioners are rated by the number of British Thermal Units (Btu) of heat they can remove per hour. Another common rating term for air conditioning size is the "ton," which is 12,000 Btu per hour.
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Proportioned AC

Using the properly sized room air conditioner is important for comfort and efficiency. Buying too large a unit will chill the air without removing humidity, leaving you feeling cold and clammy. Talk to your dealer to determine the right size for your needs.
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AC Fan

Set the fan on your central air conditioner to "on" rather than "auto." This will circulate air continuously, keeping the temperature more even throughout the house and aiding in dehumidification.
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