Protect your people and property with fully compliant, intelligently designed AOV smoke ventilation systems from Mech-Elec. We specialise in designing, installing and maintaining advanced AOV systems for commercial, mixed-use and high-end residential properties across Surrey, Sussex, Hampshire and Kent.
Whether you’re retrofitting an existing site or specifying for a new build, our fire safety engineers ensure full compliance with Approved Document B, BS 9991, BS 7346-8, and EN 12101 standards, providing critical protection when it matters most.
In the event of a fire, AOVs are automatically triggered by smoke detectors or a manual call point (MCP). Once activated, vents and openings in the affected area and adjacent stairwells open, either via natural buoyancy or fan assistance, drawing smoke and hot gases out of the building.
The Construction Products Regulation (CPR) requires all AOV products to be CE-marked and tested to a harmonised European standard (hEN). In other words, simply fitting an actuator to a window no longer meets compliance standards.
Mech-Elec provides full compliance with:
BS EN 12101-2 for natural smoke ventilation systems
BS EN 12101-3 for powered fans and smoke extract systems
We also supply full O&M manuals, test certificates and compliance reports to meet Building Control and insurer requirements.
Our team of BAFE-certified engineers will work with you to design and install the right AOV system for your site and layout, including:
Smoke vent windows
Automated roof hatches
Façade or wall-mounted louvres
Internal smoke shaft damper doors
Mechanical/Fan-assisted SHEV systems
Hybrid powered and natural smoke control
We’ll assess your building layout, fire strategy, and regulatory obligations to specify a solution that meets both performance and budgetary requirements.
Request Your AOV Quote Today
Ensure your building is protected with a fully compliant AOV system that saves lives, reduces fire damage and meets all legal obligations.
Contact our friendly team to discuss your security needs and arrange a convenient time to start the process.
We’ll carry out a thorough site survey and provide a tailored, no-obligation quote based on your specific requirements.
Our certified engineers will professionally install your system with minimal disruption, ensuring everything meets the highest standards.
Enjoy ongoing peace of mind with regular servicing and responsive support to keep your system running at its best.
AOV systems are required in multi-storey residential buildings, commercial offices, student accommodation, and any property where fire safety regulations (such as Approved Document B, BS 9991, or BS 7346-8) mandate smoke ventilation for protected escape routes. If your building has communal areas like stairwells, corridors, or lobbies, an AOV system may be a legal requirement.
AOV systems should be inspected and tested at least once every six months, as recommended by BS 7346-8. Regular Planned Preventative Maintenance (PPM) ensures the system functions correctly in the event of a fire, keeps you compliant with UK fire regulations, and avoids costly emergency repairs.
Yes. At Mech-Elec, we specialise in retrofitting AOV systems into existing buildings with minimal disruption. Our team will assess your layout and fire strategy to design a bespoke system using roof vents, windows, or façade louvres that integrate seamlessly with your building’s structure and aesthetics
Need urgent help? Mech-Elec Group offer a 24-hour emergency line.
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