GeoComfort WD single-stage water-to-water heat pumps create heated or chilled water for use in a variety of heating and cooling applications, including radiant floor heating. These systems are available in a wide tonnage range and include an option for a factory-installed desuperheater on the 10-ton version. The WD heat pumps can be used to supply hot or cold water for a variety of applications, including apartments, offices, schools, etc.