Central air conditioners are more efficient than room air conditioners. In addition, they are out of the way, quiet, and convenient to operate. To save energy and money, you should try to buy an energy-efficient air conditioner and reduce your central air conditioner’s energy use. In an average air-conditioned home, air conditioning consumes more than 2,000 kilowatt-hours of electricity per year, causing power plants to emit about 3,500 pounds of carbon dioxide and 31 pounds of sulfur dioxide.
Today’s best air conditioners use 30% to 50% less energy to produce the same amount of cooling as air conditioners made in the mid 1970s. Even if your air conditioner is only 10 years old, you may save 20% to 40% of your cooling energy costs by replacing it with a newer, more efficient model.
Air conditioners help to dehumidify the incoming air, but in cases where the air conditioner is oversized or in an extremely humid climate such as we have here in Nevada (i.e. Las Vegas, Henderson) it may not achieve a desirable level of low humidity. Also running a dehumidifier in your air conditioned home will increase your energy use, both for the dehumidifier itself and because the air conditioner will require more energy to cool your house. To save energy and money, you should try to buy an energy-efficient air conditioner and reduce your central air conditioners energy use. Consider buying an energy-efficient model, look for the NV ENERGY® or ENERGY STAR® labels – qualified central AC units are about 15% more efficient than standard models.
When installing a new central air conditioning system, be sure that your contractor:
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