... GREEN PRODUCTS, SAVES ENERGY.The COP of Product heat pump Water Heaters is 260~380%! up to 70% energy save, ... therefore sharply shorten end-user investmentpayback period, and dramatically reduces the amount of greenhouse gasses produced.2. EASY ... type, and Aircon Heat-recovery type HPWH. Widely applied in house,apartment,hotel,school,hospital,etc Air Source Swimming Pool Heat Pump ...