What size air conditioner is equally important for central air-conditioning systems, which need to be sized by professionals. If you have a central air system in your home, set the fan to shut off at the same time as the cooling unit (compressor).  Don’t use the system’s central fan to provide circulation, but instead use circulating fans in individual rooms if they are available.  Call Premeir Air at 303-993-9060 and visit our website at www.premieraircolorado.com