Continuous extract fans (dMEV) in Renfrewshire and Inverclyde

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.

We carry out continuous extract fans (dMEV) across Renfrewshire and Inverclyde, including Paisley, Greenock, Newton Mearns, Renfrew and Barrhead. Prices use Scotland rates. The survey is free for new installations on the UK mainland, and the quote that follows is fixed and in writing.

dMEV fans in Renfrewshire and Inverclyde at a glance

Area: Renfrewshire and Inverclyde, Scotland
Towns listed: 10, largest Paisley
Postcode districts: PA1, PA2, PA14, PA15, G46 and G76
Price region: Scotland
Survey: Free survey (UK mainland)

What continuous extract fans (dMEV) involves

Bathroom and en-suite

Through-wall or ceiling fans with humidity-controlled boost.

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.

Guide prices in Renfrewshire and Inverclyde

Continuous extract fans (dMEV) guide prices in Renfrewshire and Inverclyde
Work	Guide price
Continuous-running extract fan (dMEV) with humidity boost, flow tested (per fan)	£330–£575 inc VAT
Airflow testing and commissioning sheet for extract fans (up to 6 fans) (per home)	£140–£285 inc VAT

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

When to get it looked at

You manage rental homes and want ventilation that cannot be switched off
You are refurbishing several wet rooms at once
An energy retrofit has made the house more airtight

Rules in Scotland

In Scotland, ventilation is covered by the Building (Scotland) Regulations and section 3 of the Technical Handbooks, and most building work needs a building warrant first. We work to the Scottish ventilation standards and record the airflow achieved.

How the job runs

Survey
Specify
Fit
Commission
Record

Towns we cover in Renfrewshire and Inverclyde

Questions about continuous extract fans (dMEV) in Renfrewshire and Inverclyde

Which towns in Renfrewshire and Inverclyde do you cover?

All of Renfrewshire and Inverclyde, including Paisley, Greenock, Newton Mearns, Renfrew and Barrhead. If your town is not listed, send the postcode and we will confirm.

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.

Can dMEV fans be fitted where a fan already exists?

Usually yes. Most fit the existing hole or duct, which keeps the cost and mess down.

Are prices different in Renfrewshire and Inverclyde?

Our guide prices are adjusted by region. In Renfrewshire and Inverclyde we use Scotland rates, so continuous-running extract fan (dMEV) with humidity boost, flow tested is typically £330 to £575 inc VAT per fan.

Is the survey free in Renfrewshire and Inverclyde?

For new installations on the UK mainland, yes. The survey is free and the quote that follows is fixed and in writing. Servicing, testing and repair visits are charged, and we confirm the cost before booking.