What Are Mechanical Extract Ventilation Systems?
Mechanical Extract Ventilation (MEV) is a continuous ventilation system designed to remove stale, moist and polluted air from your home. MEV systems continuously extract air from moisture-prone areas such as bathrooms, kitchens, utility rooms and WCs, helping to improve indoor air quality and control excess humidity.
A Mechanical Extract Ventilation system is particularly beneficial in modern, airtight homes where natural ventilation may not provide sufficient airflow. By continuously removing moisture, odours and airborne pollutants, MEV ventilation can help reduce condensation, damp and mould, creating a healthier and more comfortable indoor environment.
Unlike intermittent extractor fans, MEV systems operate continuously at a low, quiet airflow rate. Fresh air is naturally drawn into the property through background ventilators, air inlets or other designed ventilation paths, while stale air is continuously extracted from wet rooms.
How Do Mechanical Extract Ventilation Systems Work?
A Mechanical Extract Ventilation system works quietly and continuously to remove stale and moisture-laden air from your home. The MEV unit is typically installed in a suitable location such as a utility room, cupboard, ceiling void or roof space, depending on the property and system design.
The system uses a network of ducts connected to extraction points in areas where moisture and pollutants are commonly produced, including bathrooms, kitchens, utility rooms and WCs. The unit continuously draws stale air from these rooms and discharges it safely outside the property.
As stale air is removed, fresh air enters the property through purpose-provided air inlets or other designed ventilation routes. This creates a continuous flow of fresh air throughout the home, helping to control humidity, reduce condensation and maintain a healthier indoor environment.
Benefits of an MEV Ventilation System
- Continuously removes stale, moist and polluted air from your home
- Helps reduce condensation, damp and mould
- Improves indoor air quality by removing moisture, odours and pollutants
- Provides quiet, continuous ventilation with low energy consumption
- Helps maintain a healthier and more comfortable living environment
- Particularly suited to modern, airtight homes
- Can be installed in both new-build and existing properties
- Helps protect your property, fixtures and furnishings from excess moisture
