The TETCO Residential Series Variable-Speed Water-to-Water (WV) system is the first geothermal heat pump to provide in-floor radiant heating, forced air heating and cooling, and 100% of the home’s domestic hot water in one compact, efficient package. The variable-speed water-to-water can cut your heating and cooling bill by over 30 percent when compared to a standard geothermal system, which means up to 80 percent savings over a traditional HVAC unit. This unit can heat, cool, and provide hot water for any size home, building, net-zero structure, and more. The WV has been designated as one of the Most Efficient ENERGY STAR^® certified products in 2022.