... , SAVES ENERGY.The COP of Product heat pump Water Heaters is 260~380%! up to 70% energy save, therefore sharply shorten end ... a regular electric heater. There is no need for complicated and expensive special plumbing work.3. SAFTY.No fuel required, best ... , and Aircon Heat-recovery type HPWH. Widely applied in house,apartment,hotel,school,hospital,etc Air Source Swimming Pool Heat Pump for commercial