- Postcode districts
- HS1
- Nearby
- Highlands & Islands
- Guide price
- £240–£600
- Typical time on site
- half a day
- Water
- Soft across most of the Highlands and Islands
- Survey
- Free, dates by arrangement
What does a bathroom extractor fan cost in Stornoway?
As a guide, budget £240 to £600 including VAT for a bathroom extractor fan in Stornoway; your written quote will pin it down. We adjust the national guide for Scotland, where prices are typically about 4% below the UK average. Travel and delivery to islands and remote areas are priced on your quote. The figure depends on the size of the room, whether anything moves, and the products you pick.
Extractor fan
- Fan with timer or humidistat
Inline fan
- Ducting to a roof or soffit vent
Continuous extract
- Good for windowless rooms
Guide prices for Stornoway including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Stornoway
We cover all of Stornoway, including HS1. Because Stornoway is further afield, we arrange survey visits in batches; tell us your timescale and we will confirm a date before you commit to anything.
Being a smaller town does not change how we work in Stornoway: free survey, written quote, one team. In Stornoway flats, a new vent through an outside wall may need agreement from the other owners or the factor, so we raise it at the survey. Fans fitted in Stornoway bathrooms are wired by a qualified electrician, with RCD protection and an isolator outside the room.
Most of the Highlands and Islands is supplied with soft water. Even so, condensation is the bigger problem in any bathroom, and a properly sized extractor is what deals with it. Hardness varies street by street, so check the figure for your postcode with your water supplier.
What the job includes
- A fan chosen to meet the bathroom extract rate: 15 l/s intermittent or 8 l/s continuous
- Making good around the fan and checking that it extracts properly at the grille
- A backdraught shutter and external grille, so cold air does not blow back in
- Run-on timer, humidistat or light-linked switching set up to suit how the room is used
Decisions to make first
Timer or humidistat
A timer keeps the fan running after the light goes off. A humidistat starts it whenever moisture rises, which suits rooms where people forget.
Replacement air
A fan needs air to replace what it removes, so leave a gap of around 10 mm under the door or fit a door grille. A sealed room starves the fan.
Rules that apply in Scotland
In Scotland, the Technical Handbook also uses 15 l/s extract for a bathroom. A replacement fan rarely needs a building warrant, but forming a new bathroom may.

