Many people use a contractor to install home central air systems, but it is possible to do much of the work yourself. Attempting to install central air systems is only recommended for construction-savvy individuals. Regardless of expertise, make sure to follow local building codes, instructs eHow.com.
To begin installing, use the floor plan to map out ducts. Use the manufacturer's instruction manual for placement and installation of the air handler, usually in the basement. Install the compressor outside the building, or ask an electrician if this task is outside of your experience. Connect the compressor to the house mains. Always check with an electrician after installation to make sure your mains can handle the load, suggests eHow.com.