WaterFurnace International introduces the 5 Series 502W12 high-temperature hydronic heat pump. Capable of 150 °F water output, the 502W12 makes upgrading to a WaterFurnace geothermal system easy, particularly where the replacement system must work with existing cast-iron or baseboard radiators. In a building with a radiant floor heating system, the 502W12 can be installed between joists under the floor, removing the need to alter existing flooring. www.waterfurnace.com