Air conditioning system

An air conditioning system, comprising:

• a first unit including a first fan configured to supply air to a clean room from a chamber including a space above a ceiling of the clean room;
• and
• a second unit including a second fan configured to perform at least one of returning the air from the clean room through the chamber and exhausting the air from the clean room,
• the air conditioning system further comprising:
• a pressure sensor provided in the clean room;
• and
• a control unit configured to control at least one of the first fan and the second fan based on a value detected by the pressure sensor,
• wherein the space above the ceiling of each of a plurality of the clean rooms is included in the chamber as a single space common to a plurality of the clean rooms,
• wherein air having a prescribed adjusted temperature is drawn into the common space in the chamber, and then the first unit further draws the drawn air from the common space into each of a plurality of the clean rooms,
• wherein a plurality of the clean rooms have respective target values of room pressure, one or more of the target room pressure values being different from each other,
• wherein the chamber is not equipped with a duct to draw air having a prescribed adjusted temperature to the first unit, and
• wherein, of a plurality of the clean rooms, two or more clean rooms are present in which air is at least returned by the second fan, and the two or more clean rooms are equipped with respective duct shafts through which air is drawn therefrom to the chamber.