As many as eighty percent of the new homes being built in the U.S. are built with central air conditioning units installed. Central air just makes sense, as it keeps the indoor temperatures comfortable while filtering and dehumidifying the air. This is particularly nice for people who suffer from allergies or asthma. Fortunately, central air conditioning units can be installed in preexisting homes, too.
When shopping around for central air conditioning units, there are several things to consider. One is the size of the home you will be cooling. Air conditioning units come in different sizes, so it is important to choose the most efficient size for the cooling job you have in mind. If the unit is too large, it won’t dehumidify properly. To determine the right size, consult a contractor. They should have access to a calculation method called “Manual J” that can help you choose a size.
Another important consideration in central air conditioning units is a rating called the SEER rating. These letters stand for Seasonal Energy Efficiency Ratio. New air conditioners are required to have a rating of 13. A unit that was installed over twenty...
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