The air source heat pump is generally composed of four parts: compressor, condenser, evaporator and expansion valve. By controlling the components that the refrigerant in the compressor passes through, the high temperature and high pressure refrigerant first passes through the condenser to heat, and then passes through the evaporator first. Refrigeration, this is the principle that the air source heat pump can both cool and heat, but it is worth noting that the two cannot be performed at the same time.

　　The two-in-one system has great advantages over fluorine machine air conditioners and gas wall-hung boilers: