We are offering heat pump water heater. Product descriptionpool heating /cooling heat pump water heater our products include air source heat pumps, air to water heaters, solar water heater, flat plate solar collectors, water tanks etc., which is energy-saving and eco-friendly. japanese copeland compressor titanium heat exchanger stainless steel piping inside evaporator is larger than usual size to keep its high efficiency refrigerant r407c: - odp = 0, gwp=1610 36 patents with self-developed heating in winter and cooling in summer normal operation in estra-low temperature of -1520 c with cop1.52.