Home ventilation, Argyll and Bute
Continuous extract fans (dMEV) in Argyll and Bute
Quiet low-energy fans that run all the time and boost automatically when humidity rises, across Argyll and Bute.
- 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.
Across Argyll and Bute 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 Helensburgh.
Jobs on the islands and remote peninsulas are by arrangement, with travel quoted in writing before you commit.
dMEV fans in Argyll and Bute at a glance
- Area
- Argyll and Bute, Scotland
- Towns listed
- 1, largest Helensburgh
- Postcode districts
- PA15 and G84
- Price region
- Scotland
- Survey
- Free survey (UK mainland)
What the work 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 Argyll and Bute
| 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 |
These ranges use our Scotland rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
Signs it is time to call us
- Building control has asked for continuous extract
- Occupants switch fans off because of noise
- Mould keeps returning in a bathroom with a working fan
Rules in Scotland
Scottish projects follow the Technical Handbooks (section 3, Environment) under the Building (Scotland) Regulations, usually with a building warrant. Extract and whole-home rates are designed to the Scottish standards and measured at handover.
How the job runs
- Survey
- Specify
- Fit
- Commission
- Record
Towns we cover in Argyll and Bute
Questions about continuous extract fans (dMEV) in Argyll and Bute
Which rules apply to ventilation in Argyll and Bute?
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.
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.
How much does a continuous extract fan cost?
A dMEV fan usually costs £345 to £595 including VAT per room, supplied, fitted and commissioned. Converting several rooms in one visit brings the cost per fan down.
Which towns in Argyll and Bute do you cover?
All of Argyll and Bute, including Helensburgh. If your town is not listed, send the postcode and we will confirm.
Are prices different in Argyll and Bute?
Our guide prices are adjusted by region. In Argyll and Bute 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 Argyll and Bute
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.