Automatic vent dampers are self-operated devices that monitor the airflow and pressure in a system and regulate ventilation by opening and closing dampers to the appropriate level. AVDs, as they are often called, have become an integral part of modern HVAC systems, providing vital inflow and exhaust functions for buildings of all sizes. With the help of automatic vent dampers, users can save energy by reducing their energy use during peak times, while still maintaining a comfortable indoor environment. In addition to being energy-efficient, AVDs provide added security against airborne contaminants, such as pollen and dust particles, making them an ideal choice for commercial and residential applications.