Why MEV Units Are Essential for Renovations and New Builds | BPC Ventilation

Discover why MEV units are vital for renovations & new builds. Improve air quality, reduce damp & save energy

If you’re planning a home renovation or a new build project, one of the most important elements to consider is ventilation. Modern building regulations require homes to be airtight to reduce heat loss and energy bills. While this improves efficiency, it can also trap moisture, pollutants, and stale air inside.

This is where Mechanical Extract Ventilation (MEV) systems come in. Designed to continuously remove humid and polluted air from bathrooms, kitchens, and utility rooms, MEV units keep your home healthy, comfortable, and energy efficient.

At BPC Ventilation, we specialise in supplying MEV units in the UK and Ireland, including advanced demand-controlled systems like the DucoBox Silent MEV Unit with Humidity Sensor.

What Is an MEV Unit?

A Mechanical Extract Ventilation unit is a centralised fan system that extracts stale air from key rooms in the home and expels it outside. Fresh air enters naturally through background ventilators or trickle vents, maintaining a healthy indoor environment.

Unlike traditional extract fans, modern MEV systems are:

Demand-controlled – only boosting airflow when necessary.
Ultra-quiet – with advanced acoustic design.
Energy-efficient – using low-power DC motors to save energy.

Why Install an MEV System in Renovations and New Builds?

- Prevent Damp and Mould
Kitchens and bathrooms are prone to condensation and high humidity. Without proper ventilation, this can lead to mould growth, damp, and even structural damage. Units like the DucoBox Silent MEV automatically increase airflow when humidity levels rise, preventing long-term problems.

- Improve Indoor Air Quality
Tightly sealed homes trap odours, VOCs (volatile organic compounds), and CO₂. Installing a demand controlled MEV unit ensures these pollutants are extracted, leaving you with fresher, cleaner air.

- Quiet Comfort
Nobody wants a noisy ventilation system. Belgian-engineered units like the DucoBox Silent and DucoBox Reno are among the quietest MEV systems in Europe, thanks to their double-wall construction and optional acoustic kits.

- Energy Efficiency and Regulation Compliance
Today’s MEV systems are designed with low-energy EC/DC motors and smart controls that only run when needed. This reduces energy bills and helps properties meet the latest building regulations (Part F and SAP Appendix Q).

- Flexible for Every Project
Whether you’re renovating a compact property or building a large family home, MEV units are versatile. Options such as the DucoBox Connect and DucoBox Focus even offer smart zoning and app connectivity for future-proof installations.

Spotlight: DucoBox Silent MEV Unit with Humidity Sensor

The DucoBox Silent MEV is one of the most popular systems in the UK for both new builds and renovations.

Key Features:

Demand-controlled ventilation with automatic humidity detection.
Powerful airflow up to 400 m³/hr.
Ultra-quiet operation with double-wall construction.
Suitable for up to 7 extract points.
Optional CO₂ sensor, boost switch, and acoustic kit for extra performance.

It's the perfect balance of smart control, energy efficiency, and whisper-quiet operation.

MEV Systems for Every Home

DucoBox Reno – Compact, lightweight, with integrated humidity sensor. Ideal for up to 5 extraction points in renovations.
DucoBox Connect – Smart app control, RF controllers, and flexible installation.
DucoBox Focus – Advanced zonal control for up to 11 areas, ideal for large new builds.
Vent Axia Lo-Carbon Multivent MVDC-MSH – Flexible mounting options with ultra-low specific fan power (SFP).
Vent-Axia Sentinel Multivent H – Precision demand control in 1% increments with advanced humidity detection.

Why Choose BPC Ventilation?

BPC are MEV specialists in the UK and Ireland. Choosing us means:

Lifetime technical support.
Wide range of high-performance MEV units.
Expert advice tailored to your project.
Fully compliant systems that meet building control regulations.

Final Thoughts

As homes become more airtight, ventilation has never been more important. MEV systems provide an efficient and quiet way to keep your home free from moisture and pollutants while saving energy.

Whether you’re upgrading during a renovation or installing a system in a new build, BPC Ventilation offers the best MEV units in the UK, including the whisper-quiet DucoBox Silent and smart options like the DucoBox Focus.

Browse our full range of demand-controlled MEV systems today and speak with our team for expert advice.