The low-profile MEV unit can be mounted in any orientation, and installed at either first or second fix stages, offering flexible, hassle-free installation. Its low-watt motors provide high-performance extract ventilation all year round.
Our MEV systems are a cost-effective, energy efficient extract fans for wet room and kitchen ventilation.
What is Centralised Mechanical Extract Ventilation
To achieve compliance with Approved Document F using a Mechanical Extract Ventilation (MEV) strategy, the system must provide continuous trickle ventilation to the entire dwelling, supplemented by a boost function for high-moisture events.
Unlike intermittent fans, MEV systems are calculated based on the minimum whole building ventilation rate (determined by the number of bedrooms or total floor area). Under the current regulations, continuous MEV systems must be commissioned on-site by a competent professional using a calibrated airflow metre.
How Does Mechanical Extract Ventilation Work
The MEV ventilation strategy provides simultaneous, low-level extraction from kitchens, bathrooms, shower rooms, utility rooms, and toilets to a central extract fan via a system of ductwork and grilles. The extracted air is then normally discharged to outside via a single duct and grille/cowl.
Replacement air is normally able to be provided via structural air leakage with background ventilation openings like trickle vents not normally needed unless the home is built to the highest levels of airtightness. As this type of system is continuous, low noise levels and reliability are critical.
