Continuous extract fans (dMEV) in Tyne and Wear

A dMEV (decentralised mechanical extract ventilation) fan is a low-energy extract fan that runs continuously at a quiet trickle speed and boosts automatically when it senses humidity or a light switch. Because it never fully switches off, moisture is removed steadily instead of building up between showers.

Across Tyne and Wear the job is priced the same way wherever you are: what is fitted, how long it takes and how far we travel. Towns we cover include Sunderland, South Shields, Gateshead, Washington and Tynemouth.

dMEV fans in Tyne and Wear at a glance

Area: Tyne and Wear
Towns listed: 20, largest Newcastle upon Tyne
Postcode districts: NE31, NE2, NE3, NE28, NE31 and NE11
Price region: North East
Survey: Free survey (UK mainland)

What continuous extract fans (dMEV) involves

Landlords and housing associations often choose them because tenants cannot switch them off and forget them. Under Approved Document F, continuous mechanical extract systems need commissioning: the airflow on both trickle and boost is measured and recorded. We do that as part of the job, so you have a record for building control, a landlord file or a future buyer.

Kitchen

Higher-rated continuous fans where a ducted hood is not practical.

Whole-home dMEV upgrade

Every wet room converted at once, with trickle vents checked in the habitable rooms.

Commissioned and recorded

Trickle and boost rates measured and written on a commissioning sheet.

Guide prices in Tyne and Wear

Continuous extract fans (dMEV) guide prices in Tyne and Wear
Work	Guide price
Continuous-running extract fan (dMEV) with humidity boost, flow tested (per fan)	£315–£550 inc VAT
Airflow testing and commissioning sheet for extract fans (up to 6 fans) (per home)	£135–£270 inc VAT

Guide prices using North East rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.

Common reasons people call

Mould keeps returning in a bathroom with a working fan
You manage rental homes and want ventilation that cannot be switched off
You are refurbishing several wet rooms at once

Rules in England

English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. For homes, it sets minimum extract rates such as 15 litres a second for a bathroom and 30 or 60 for a kitchen, and expects mechanical systems to be airflow-tested.

How the job runs

Survey
Specify
Fit
Commission
Record

Towns we cover in Tyne and Wear

Questions about continuous extract fans (dMEV) in Tyne and Wear

Which rules apply to ventilation in Tyne and Wear?

In England, ventilation in new and altered homes is covered by Approved Document F of the Building Regulations. Landlords also have duties under the Housing Health and Safety Rating System, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.

Are continuous fans noisy?

A correctly sized dMEV fan is very quiet on trickle; most people only notice it on boost. Noise usually means the wrong fan or a poor duct.

What is the difference between dMEV and MEV?

dMEV uses one small fan in each wet room. MEV uses one central fan, usually in the loft, ducted to all the wet rooms. Both run continuously.

Which towns in Tyne and Wear do you cover?

All of Tyne and Wear, including Sunderland, South Shields, Gateshead, Washington and Tynemouth. If your town is not listed, send the postcode and we will confirm.

Are prices different in Tyne and Wear?

Our guide prices are adjusted by region. In Tyne and Wear we use North East rates, so continuous-running extract fan (dMEV) with humidity boost, flow tested is typically £315 to £550 inc VAT per fan.