An Automatic Opening Vent (AOV) system is a critical fire safety mechanism designed to clear smoke and heat from buildings. Its primary purpose is to automatically ventilate lobbies, stairwells, and corridors when a fire is detected. Properly functioning AOV systems are essential because they maintain clear escape routes for occupants and improve visibility for emergency services, significantly reducing the risks associated with smoke inhalation. These systems are most effective in multi-storey buildings like residential blocks and offices, ensuring safe escape routes and regulatory compliance.