The TETCO Residential Series Single-Stage, Water-to-Water (WS/WD) heat pumps create heated or chilled water for use in a variety of heating and cooling applications, including radiant floor heating. These systems are lighter and more efficient than other water-to-water heat pumps and come standard with hot water assist for 25% - 40% cost savings on hot water annually. These heat pumps are a fit for small to large homes, net-zero homes, new construction or existing homes, storage buildings, and other structures where radiant heating is needed.