A VAV box, or Variable Air Volume box, is an essential part of many HVAC systems. This unit is designed to control and adjust the flow of air within an HVAC system, making it easier to maintain a desired temperature and humidity. VAV boxes use a combination of dampers, fans, and sensors to adjust the volume of air that is sent through the system. The dampers open and close, controlling the amount of air entering the space, while the fans push the air through the system. Sensors help the VAV box determine the amount of air that needs to be sent to each space in order to maintain the desired temperature and humidity. The VAV box is a crucial part of many HVAC systems and helps to ensure that the air quality and temperature of a given space is kept at optimal levels.