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How Much Does Central Air Cost?

Central Air Prices

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Central air-conditioning, often referred to as just central air, distributes cooled air throughout a home or office space through a duct system. Some central air systems can also dehumidify air.

Central Air Costs

If using existing duct work plan on about $3,500-$5,500. If new duct work needs to be installed, this cost could jump to as much as $10,000-$12,000.

These days, typical installation of central air conditioning is what’s called a split-system. In this setup the compressor (which cools the air) is located outdoors and the air handler unit (which distributes the cooled air throughout the house) is placed indoors. Although less popular, homeowners also have the option of a package system in which the compressor and air handler are placed together, usually on the ground or roof.

A somewhat recent innovation in central air conditioning is the mini-split system, also known as the ductless mini-split system. Technically it is not the same as central air, although installing several can serve the same function. This ductless system is ideal for older homes that don’t have duct work installed. It is also great for cooling areas and additions up to about 1,200 square feet.


Be sure to get multiple estimates, as there are so many factors that will determine the cost of installing central air conditioning. Not the least of these is the quality of a prospective contractor. Don’t try to skimp on price only to receive a flawed system or one installed by an un-licensed service provider. Do your homework.
  • The cost of central air conditioning installation could rise even more than the above stated prices depending on factors such as the age of the home (older homes are generally more expensive) and local climate.
  • A ductless, mini-split system is definitely a cheaper option for an older home without existing duct work. Also, it can be less expensive to run in some cases.
  • Take advantage of recent federal government legislation which offers tax rebates up to $1500 for a new, energy-efficient cooling system. Using Energy Star rated products also will decrease the cost of running your central air conditioners over the years you own your home.
  • Installing central air or a mini-split system will increase the value of your home.
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