AOV System Maintenance: Ensuring the Safety of Your Building

Automatic Opening Vent (AOV) systems play a critical role in maintaining the safety of buildings in the event of a fire. These systems are designed to automatically open vents, windows, or smoke curtains to facilitate the safe evacuation of occupants and assist firefighters in their life-saving efforts. To ensure the effectiveness and reliability of AOV systems, regular maintenance is essential. In this blog post, we will explore the importance of AOV system maintenance and provide valuable tips for maintaining these systems in compliance with UK standards.

Thermadome wind deflectors 2
Thermadome Louvre with solid blades 4

The Significance of AOV System Maintenance

AOV system maintenance is crucial for several reasons. Firstly, regular maintenance ensures that the system is in proper working order, ready to activate when needed. Faulty detectors, sensors, controls, or actuators can compromise the performance of the AOV system, hindering its ability to efficiently remove smoke and provide safe escape routes.

Secondly, maintenance allows for the identification and rectification of any potential issues or malfunctions. By conducting routine inspections, any defects or wear and tear can be detected early on, preventing more significant problems from arising. This proactive approach helps to maximize system reliability and reduces the likelihood of unexpected failures during a fire emergency.

Additionally, AOV system maintenance econtributes to compliance with UK regulations and standards. In the UK, AOV systems must adhere to specific guidelines outlined in documents such as Approved Document B (Fire Safety) and British Standards (such as BS EN 12101). Regular maintenance ensures that your AOV system remains in line with these regulations, demonstrating your commitment to the safety of occupants and the legal obligations of building owners.

Essential AOV System Maintenance Tips

Now that we understand the importance of AOV system maintenance, let’s explore some essential tips to keep your system in optimal condition:

  1. Regular Inspections: Conduct routine inspections of your AOV system to identify any signs of damage, like corrosion, loose connections, or blocked vents. Check the detectors, sensors, controls, and actuators to ensure they are functioning correctly.
  1. Testing and Maintenance Schedule: Develop a comprehensive testing and maintenance schedule for your AOV system. This should include regular functional tests to ensure that components activate as intended. Consult the manufacturer’s guidelines and UK standards for specific testing requirements.
  1. Cleaning and Lubrication: Keep all components of the AOV system clean and free from debris. Regularly clean vents, windows, and smoke curtains to ensure unobstructed movement. Lubricate mechanical components as recommended by the manufacturer.
  1. Battery and Power System Checks: If your AOV system operates on batteries or a power supply, check these regularly to ensure they are functioning correctly. Replace batteries as per the recommended schedule and ensure power sources are in good condition.
  1. Calibration and Adjustment: Periodically calibrate and adjust the detectors, sensors, and controls of your AOV system. This ensures accurate functionality and timely response in case of a fire event.
  1. Documentation and Record-Keeping: Maintain detailed records of all maintenance and testing activities performed on the AOV system. Keep track of inspection dates, test results, repairs, and any other relevant information. This documentation helps demonstrate compliance with regulations and assists in tracking the system’s maintenance history.
  1. Engage Professional Services: Consider employing the services of a qualified and experienced professional for AOV system maintenance and repairs. These experts can provide expert advice, conduct thorough inspections, and ensure all necessary maintenance tasks are performed correctly.
  1. Stay Informed: Stay up to date with the latest regulations, standards, and best practices regarding AOV system maintenance. Regularly review guidelines from organizations such as the Building Regulations Advisory Committee (BRAC) and the Fire Industry Association (FIA) to ensure your system remains compliant.
  1. Training and Education: Provide appropriate training to building occupants and staff regarding the operation and usage of the AOV system. Educate them on the importance of the system, evacuation procedures, and regular maintenance practices.

By following these maintenance tips, you can effectively ensure the reliability and functionality of your AOV system, promoting the safety of occupants and compliance with UK regulations.


Regular AOV system maintenance is essential for maintaining the safety and functionality of buildings in the event of a fire. By conducting routine inspections, testing, and adhering to maintenance schedules, you can identify and rectify any issues promptly. Proper cleaning, calibration, and professional assistance contribute to a well-maintained AOV system that meets UK standards and keeps occupants safe. Remember, AOV system maintenance is not just a legal requirement but also a responsibility towards the safety of everyone within your building. Stay proactive, informed, and committed to regular maintenance to ensure your AOV system is always ready to protect lives and property.

Double Leaf Smoke Vent

Speak to the Experts at Smoke Vent

If you are looking to install smoke vents into an existing building or one that is under, or currently planned for construction, then get in touch with us today. We can help guide you through the various options available to you and help you choose the best options to ensure that you are in accordance with regulations and have put everything in place to keep your building and the occupants as safe as possible in the event of a fire. Call us on 01276 451555 or email us at