To estimate the cost of installing central air conditioning, determine the BTUs needed for the area first. Consult the Energy Star website to find BTUs needed for different square footage measurements. Costs vary based on this information, as well as any needed duct work.
Some factors that affect the cost of installation include whether the structure is shaded, if there are a lot of windows, and whether the kitchen is used regularly. If the home already has ducting, installing an air conditioning system in a 2,000-square-foot area typically costs between $3,500 and $4,000. If you need to install ducting, the cost is generally between $7,000 and $8,000. Anticipate spending up to $10,000 total to install the system, including all the equipment needed.