How many kinds of central air conditioners are there?

It is divided into three categories:

1. All-air system of central air conditioning.

2. Central air conditioning water system.

3. Feng Shui system of central air conditioning.

1. Refrigerant system:

The outdoor unit is connected with several indoor units through refrigerant pipes (usually copper pipes), and the indoor units in each room directly exchange heat with air. (The outdoor unit compresses the refrigerant, and then the refrigerant is transported to the indoor unit through copper pipes, where the refrigerant is exchanged with indoor air. )

2. Water system:

Outdoor units are generally called hot and cold water units, and indoor units are generally called fan-coil units, which are connected by water pipes. (The outdoor unit compresses the refrigerant, and the refrigerant exchanges heat with water to generate cold/hot water, and the water is sent to each indoor unit by a water pump, so that the indoor air exchanges heat with water to achieve the purpose of temperature regulation).

3. Air duct system:

The outdoor unit is connected with an air duct indoor unit through a refrigerant pipe, and the air duct indoor unit uniformly processes the indoor air, and then sends the processed air into each room through the air duct.