Home ventilation, Scottish Borders
Continuous extract fans (dMEV) in the Scottish Borders
Quiet low-energy fans that run all the time and boost automatically when humidity rises, across the Scottish Borders.
- 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.
Every job in the Scottish Borders gets a written quote before it starts and a commissioning record when it finishes. We cover Hawick and Galashiels and the villages around them.
dMEV fans in the Scottish Borders at a glance
- Area
- Scottish Borders, Scotland
- Towns listed
- 2, largest Hawick
- Postcode districts
- TD1, TD4 and TD9
- 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 the Scottish Borders
| 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
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 the Scottish Borders
Questions about continuous extract fans (dMEV) in the Scottish Borders
Are prices different in the Scottish Borders?
Our guide prices are adjusted by region. In the Scottish Borders we use Scotland rates, so continuous-running extract fan (dMEV) with humidity boost, flow tested is typically £330 to £575 inc VAT per fan.
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.
Is the survey free in the Scottish Borders?
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.
Which rules apply to ventilation in the Scottish Borders?
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.
Other services in the Scottish Borders
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.