Split heat pumps are divided into an indoor unit and an outdoor unit. The outdoor unit retains compressor, fans, expansion valves, etc. The indoor unit includes plate heat exchanger, circulating water pump, expansion tank, electric heater and so on. The outdoor unit and the indoor unit are connected through a copper pipe. Apart from being easy to hang and install, the system has better anti freezing performance compared with the monoblock type, because there is no waterway for the outdoor part. At present, SPRSUN offers best split unit heat pumps for sale, which are a type of EVI low temperature DC inverter air source heat pumps for hot water, house heating and cooling.