Home ventilation, Forth Valley
Continuous extract fans (dMEV) in the Forth Valley
Quiet low-energy fans that run all the time and boost automatically when humidity rises, across the Forth Valley.
- 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.
The Forth Valley 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 the Forth Valley at a glance
- Area
- Forth Valley, Scotland
- Towns listed
- 5, largest Stirling
- Postcode districts
- EH51, FK7, FK9, FK1, FK2 and FK10
- Price region
- Scotland
- Survey
- Free survey (UK mainland)
How we do it
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.
Commissioned and recorded
Trickle and boost rates measured and written on a commissioning sheet.
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.
Guide prices in the Forth Valley
| 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 |
Scotland rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
Common reasons people call
- 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 the Forth Valley
Questions about continuous extract fans (dMEV) in the Forth Valley
Which rules apply to ventilation in the Forth Valley?
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 the Forth Valley do you cover?
All of the Forth Valley, including Bo’ness, Stirling, Falkirk, Alloa and Grangemouth. If your town is not listed, send the postcode and we will confirm.
Are prices different in the Forth Valley?
Our guide prices are adjusted by region. In the Forth Valley 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 the Forth Valley
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.