HomeAdvisor’s Air Conditioning Cost Guide lists price information on installing a new A C unit, as reported by HomeAdvisor customers..On average, homeowners across the US spend $, , to install central air . tons for a ,, sq.ft. house, if there is ductwork already in place. This is usually the case in homes that have a forced air heating system..Installing a central air conditioner costs on average $, although it can cost as much as $,. This installation cannot be considered a “DIY” project, and it is traditional for a homeowner to hire a contractor for the job..Mini split central air conditioner prices average $, to $, installed. Note that while a high efficiency unit could cost up to percent more than one with the minimum SEER rating, the extra costs should be recouped in energy savings over the lifetime of the system..
If you don t have ducts, or the old ones are super inefficient, you have two choices A contractor can install new ducts in the attic and or ba.tand run between floor connections through closetsfor the cost of about $, to $,. Or you can opt for ductless air conditioning Unlike central air .When added to an existing forced air heating system, central air for a , square foot home costs $, to $, and can be done by two technicians in two to three days, often with li.e or no change to the ducting. For a house that needs ducts, the costs and work time double..Homeowners can pay between $ and $, for central air conditioning. The final cost will depend on the unit, additional installation items such as ductwork and the professional s installation rates. Here are some additional factors that will determine the kind of system you will need, as well as its price..