heat pump water heater High efficiency & energy saving split and intergrated type ... household sanitary water, space heating, heat recovery system water heater applications etc.1. Hitachi, Copeland compressors, strong operation ... and nuts, no damage to the coating, avoiding rust for long time.5. Accurate casing for the fan shroud, with strictly ... .(IN/OUT):15/45oC. heat pump water heater for household