Variable air volume induction terminal (Induction VAV Box), which is a type of pressure-independent air distribution terminal designed for systems with large changes in thermal load. In this type of terminals, room air is induced into the box and after mixing with ventilated air, in addition to providing a constant amount of air flow for the room, by maintaining the amount of air movement in optimal conditions even in very large changes in thermal load, the conditions It provides a suitable environment for the residents. This special feature of these terminals means that the “dumping” phenomenon does not occur in cold air, and the primary air temperature from the air conditioner can be reduced as much as possible without a high temperature difference between the supply air temperature. and create room temperature. The variable air volume (VAV) induction terminal can be used in the supply air of new or renovated buildings. These terminals have the ability to install thermal or electric reheating coils as well as air distributor plenum. Using these terminals to control CO2 is also an ideal choice. According to the quality of the air inside the room, the right amount of fresh air is always transferred into the room. Of course, the primary air supply system must also be suitable for this purpose.