Ground Water-Source Heat Pump

Ground water-source heat pump systems take advantage of the fact that the temperature of the earth near the surface is around 55°F year-round. Water from an aquifer is typically in this range. In some locations, it is considerably higher. This water tends to be a better source of heat for the heat pump than outdoor air. These systems can also use surface water (such as lakes, rivers, ponds, and so on). In these cases, ground or surface water is circulated directly through the unit or through a main heat exchanger.