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Mechanical Extract Ventilation (MEV)

Single Central Extract System for multiple rooms
Perfect for New Build - Easy to Retrofit


Mechanical Extract Ventilation (MEV)

MEV Central Extract ventilation works to remove moisture, stale air, and humidity from the 'wet rooms' including your bathrooms, kitchen, and utility spaces. The unit is centrally located in a cupboard or loft space and then ducted to each room - you will simply see an air valve in the ceiling.

MEV systems run quietly and continuously in the background at a trickle rate and then boost when high levels of moisture need to be removed eg. showering.

MEV Homeowner Guide
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Common MEV Questions

What is Central Extract Ventilation (MEV)?

Central Extract Ventilation (MEV) is a whole-house ventilation system that continuously extracts stale air from multiple areas of the home, such as kitchens, bathrooms, and utility rooms, and expels it outside.

Unlike individual extractor fans, an MEV system uses a single central unit connected to ducts that service the entire property. It helps maintain indoor air quality by removing moisture, odours, and pollutants, while drawing fresh air into the living spaces via trickle vents.

Mechanical Extract Ventilation (MEV) Homeowner Guide.

What are the benefits of an MEV system compared to a typical extractor fan?

An MEV system provides several advantages over traditional extractor fans:
Continuous Ventilation: Unlike standard fans that operate intermittently, MEV systems run continuously, ensuring a consistent flow of fresh air throughout the house.

Energy Efficiency: MEV systems are designed to work efficiently, consuming less energy while maintaining proper ventilation levels.
Quieter Operation MEV units are usually located away from living areas, making them quieter than individual fans installed in rooms.

Whole-House Solution: Instead of just ventilating one room, MEV systems cover multiple areas, ensuring better air quality and moisture control across the entire home.

How do I choose the right MEV system for my home?

Choosing the right MEV system depends on several factors:

House Size and Layout: The size and design of your home will determine the type and capacity of the MEV unit needed. Larger homes may require a more powerful unit or additional extract points.

•  Airflow Requirements; Look for systems that meet the required airflow rates specified in Building Regulations Part F.
•  Noise Levels Consider quieter models, especially if the unit will be placed near living areas.
•  Energy Efficiency Opt for units with low energy consumption to save on running costs.
•  BPEC Accreditation Ensure the system is commissioned by a BPEC-accredited engineer to guarantee compliance with regulations.

Shop MEV units.

How is a MEV system controlled?

MEV systems can be controlled either manually or automatically, depending on the model. Basic systems run continuously at a low speed and switch to a higher speed when humidity levels rise, such as during cooking or showering.

More advanced systems can feature sensors, such as humidity, which adjust airflow automatically based on environmental conditions. Some systems may also offer user controls via switches or remote devices to boost or reduce extraction rates as needed.

How important is servicing for a MEV system?

Regular servicing of your MEV system is essential to ensure its optimal performance and longevity. Over time, dust and debris can accumulate in the units reducing airflow and efficiency.

Servicing helps maintain proper ventilation rates, ensures energy efficiency, and prevents issues like mould growth due to poor ventilation. 

Get your MEV Ventilation Service Quote.

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