Abstract
Heating and cooling your home uses more energy and takes up more money than any other system in your home. No matter what kind of heating, ventilation, and air-conditioning system you have, you can save money and increase comfort by properly maintaining the equipment. This document is FCS5233-04, one of a series of the Department of Family, Youth and Community Sciences, UF/IFAS Extension. Original publication date: May 2002. Revised: December 2005.