Central air conditioning or room air conditioners that are on a designated circuit qualify for a special credit or a low A.C. rate. The air conditioners are usually controlled during the warmest time of the day. A.C. Plus units should always be sized for the cooling needs of the home. In the heating mode, the heat pump will usually provide all the heating needs down to approximately 20 . The GeoSource heat pump utilizes the earth as the medium from which heat is extracted.
Water is pumped through a heat exchanger in the heat pump.
Heat is extracted, and the water is then returned to the ground, either through discharge on a drain field or through a closed earth loop system. Because ground temperatures do not vary as dramatically as outside air temperatures, the heat available for transfer, as well as the unit s operating efficiency remains relatively constant throughout the winter. At depths of 6 feet, or more below the ground, the soil maintains a year-round temperature of about 46 degree F 50 degree F in this region. So in the summer, it s cooler than the outside air, and in the winter, it s warmer making it an ideal energy source. Although the initial installation cost may be higher, annual operating costs are much lower than all other types of heating systems.