Home ventilation, Tayside
Continuous extract fans (dMEV) in Tayside
Quiet low-energy fans that run all the time and boost automatically when humidity rises, across Tayside.
- From £330 inc VAT per fan
- Free survey

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.
Tayside has every kind of building, from old terraces to new estates and business parks, and every job is designed around the building in front of us, not a standard kit.
dMEV fans in Tayside at a glance
- Area
- Tayside, Scotland
- Towns listed
- 6, largest Dundee
- Postcode districts
- DD1, DD2, PH1, PH2, DD11 and DD8
- Price region
- Scotland
- Survey
- Free survey (UK mainland)
What continuous extract fans (dMEV) involves
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.
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 Tayside
| 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 are refurbishing several wet rooms at once
- An energy retrofit has made the house more airtight
- Building control has asked for continuous extract
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 Tayside
Questions about continuous extract fans (dMEV) in Tayside
Which rules apply to ventilation in Tayside?
In Scotland, ventilation is covered by section 3 of the Building Standards Technical Handbooks. Private rented homes must meet the Repairing Standard, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.
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.
Which towns in Tayside do you cover?
All of Tayside, including Dundee, Perth, Arbroath, Forfar and Montrose. If your town is not listed, send the postcode and we will confirm.
Are prices different in Tayside?
Our guide prices are adjusted by region. In Tayside we use Scotland rates, so continuous-running extract fan (dMEV) with humidity boost, flow tested is typically £330 to £575 inc VAT per fan.
Other services in Tayside
Get a guide price in two minutes
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.