Air conditioners are commonly sold to companies that install units rather than directly to a consumer. This is because they have to be installed by contractors who have licenses. Pricing is usually a packaged deal, which includes the actual unit (air conditioner/heater), the ductwork, permits, labor and anything else that goes along with the installation process. The prices can vary severely depending on the efficiency or quality of the unit and with it getting closer to the winter months, the better the HVAC system the more you may have to pay however that is not always the case. Consumer Reports actually states that you could expect to pay around $3,000 more if you plan on getting rid of an old system and replacing it with a newer one. However, if you need all new ductwork you can expect to hash out another $6,000.
There is not a definite way to give an exact figure of what the costs would be on each issue that a heating and air conditioning unit would have because different companies have different prices and Carrier actually does not list their prices on each website or in each local store. The only way to definitely find a figure for a problem you are having with your HVAC unit is to call around to your local contractors or repairmen and get some estimates. You want to make sure that these repairmen are legitimate and that they do not require any money up front or have any suspicious activity. Remember if it sounds too good to be true then it actually is.
Sometimes air conditioning costs are not as expensive as you make think. It could be something as simple as getting into your ducts and cleaning them out which is something you can do yourself you are able to. It only takes maybe an hour or two depending on the size of your home. Replacement parts vary and can be as low as a single dollar bill. Do not get discouraged if something goes wrong though. The most important thing is to figure out what the problem is and go from there.
You should look into hiring a good contractor before everything else. They will know what kind of unit to buy and how much it will usually cost you to install and the costs associated with it. You have to remember that these units are usually more expensive but they pay off in the long run so do not be surprised when they throw the number out there. You can obtain great cooling performance with something called Energy Star sealing so ask the contractor about it. Always remember that regular maintenance is a good thing. Keeping up with your unit on a monthly, bi-yearly and yearly basis is a very good idea if you want to save money on a long term basis especially if you do not have an Energy Star unit. So this technically states that even though your home central air conditional isn't Energy Star certified it still can save you money if you take care of it.