WaterFurnace introduces the 5 Series 502W12 high-temperature hydronic heat pump. Capable of 150° F water output, the 5 Series makes upgrading to a WaterFurnace geothermal system easy, particularly when the replacement system must work with existing cast-iron or baseboard radiators. In a building with a radiant floor heating system, the unit’s higher water temperature means the 502W12 can be installed between joists under the floor, removing the need to alter existing flooring. The pump uses two high-efficiency Copeland Scroll compressors for reliable, low-cost operation. Compressor blankets, double-isolation mounting plates and a discharge muffler ensure a quiet system. In addition, two brazed-plate heat exchangers provide increased efficiency, performance and reliability. Smaller than traditional coaxial exchangers, they allow the 502W12 to provide high-capacity performance in a compact unit.