In terms of the sense of use, the central air conditioner is more comfortable for people. Each indoor unit of the central air conditioner has an air outlet and a return air outlet, with good air circulation, uniform temperature in the room, and good cooling effect. The compressor of the central air conditioner consumes a lot of electricity when it is turned on, but because of the use of inverter compressors, it is more energy-efficient than ordinary air conditioners for long-term use. Central air-conditioning is more difficult to install. Central air-conditioning is a "three-point quality and seven-point installation". Whether it can be used comfortably and worry-free depends on the installation. Once the installation is not in place, various problems may occur, such as noise and malfunction. Refrigeration, peculiar smell, water leakage, shock to the ceiling downstairs, etc. If the building area is large, there are many rooms, and multiple rooms need to use air conditioning at the same time, it is more suitable to use central air conditioning.