Central Air Conditioning Cost

How much does central air conditioning cost?

The beauty of a central air conditioning system is that it keeps the temperature and the humidity right throughout the house. These are not simple or cheap systems to install, and there is plenty of competition in the market which leads to a variety of different possible costs. The size of the house, and complexity of the system, also adds to the confusion.

General Cost

• The common practice is to add a central system to an already existing forced air heating system.
• In a standard sized hose the cost of the job overall could be anywhere from $4000 to double that cost.
• The additional costs will be for changing the ducts and the system orientation; some systems may be able to be installed using the existing ducting.
• The above costs are for a new system added to an existing system and include all materials and fitting, and use an estimated 2000 square foot house as the benchmark.

Extra Cost

• Where complications are encountered in the fitting of the system there will be added costs incurred.
• Fire inspection may be required by some councils – this will cost in the region of $50 to $100.
• Any more complex jobs such as replacing an older heating system with a more modern one will naturally carry additional costs.


• Make sure you are getting a system that is relevant to the size and style of your house – even the most modern system will not be efficient if a system is too big, or too small, for its design, and installing a bigger system than is necessary carries additional costs.
• In the case of older houses where ducts may not be fitted – thanks to the design and construction of the house itself – there is the option of ductless systems; these can be expensive yet surprisingly effective.
• Make sure you get a full warranty with your new system as there are many things that can go wrong.


• The best advice is to find a reputable fitter who will do the job with expertise - www.acca.org/contractors/ is an excellent resource that gives you great advice on choosing the right fitter and points you to those in your local area
• Take a look at different offers and compare prices – use the internet and cost comparison sites. Get several estimates, and check them against each other.
• Ask around friends and family for recommendations – someone will know a good plumber who is certified and licensed to carry out the job.
• Use the Better Business Bureau to find reputable companies.

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