... CE, CCC, ISO9001 heat pump water heaterfor household sanitary water, space heating, heat recovery system water heater applications etc. 1. Hitachi, Copeland ... fouling, low maintenance cost.4. Durable coating, with special casing design adopting bolts and nuts, no damage to the coating, ... and noise.6. The highest water outlet temperature: 60oC.7. Warranty: 18 months guarantee for the whole units.8. ...