Central air conditioning: Central air conditioning is an air conditioning system that controls different rooms by a single host through air ducts or connecting cold and hot water pipes to multiple terminals, in order to achieve indoor air conditioning. That is to say, it supplies the heating and cooling of all rooms, with only the supply fan in each room, and all the external units that were originally cooled are packed into one box.
Central air conditioning system: There is a main unit and a terminal system. According to the medium used to bear the indoor heat and humidity load, it can be divided into full air system, full water system, air water system, and refrigerant system. According to the degree of concentration of air treatment equipment, it can be divided into centralized and semi centralized. According to the source of the processed air, it can be divided into closed, direct current, and mixed (primary return air and secondary return air). The main components of the equipment include air conditioning units (cold and heat sources), fan cabinets, fan coil units, and so on.