The TETCO Residential Series Two-Stage, Water-to-Water (WT) heat pumps are designed to supply warm and chilled water for radiant floor heating, forced air heating and cooling (when paired with an air-handler), and hot water assists for 25% – 40% savings on hot water costs. WT heat pumps can also be used for pool heating. These systems work for small to large homes, buildings, and homes looking to achieve net-zero, storage buildings, and other types of structures that are in need of radiant heating.