Commercial Use Air Source Heat Pump Water Heater:
* Panasonic compressor & R410a refrigerant, OR Copeland compressor and R417a refrigerant;
* Stainless steel 304 for all fasteners, for side covers of evaporatorer;
* Preservative oil for copper tubes and all important part of cabinet;
* Chinese No.1 brand shell & tube heat exchanger;
* Japan "Saginomiya" or "Sanhua" electronic expansion valve;
* Sanhua four way valve;
* LCD controller;