DC INVERTER AIR TO WATER HEAT PUMP split type 20KW heat output, Heating&Cooling Durable,Economical,High-COP CE,RoHS approval ... : LCD controller, three way valve, flow switch, WILO water pump, plate heat Exchanger and inside connectionOutside unit with DC inverter R410a, electrical expansion ... our Website or Company. Durable Air To Water DC INVERTER Heat Pump 20KW (split type)