Westbury, Wiltshire
Extractor fan installation in Westbury
Bathroom, kitchen and utility fans sized to the Part F rates, ducted outside and tested. Covering Westbury and BA13 and BA14.
- From £180 inc VAT per fan
- Free survey

For Westbury landlords and homeowners alike, a tested fan is the cheapest ventilation upgrade there is.
Customers in Westbury can get a guide price online in a couple of minutes. It uses South West rates, which is what we would charge for the same job anywhere in Wiltshire. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.
Extractor fans in Westbury at a glance
- Town
- Westbury, Wiltshire
- Postcode districts
- BA13 and BA14
- Nearby
- Warminster (4 miles), Trowbridge (4 miles) and Frome (6 miles)
- Price region
- South West
- Survey
- Free survey (UK mainland)
How we approach extractor fans in Westbury
The rate a fan delivers through a real duct run is often far lower than the number on the box, which is why we size to the room and test the result. For England, Approved Document F gives minimum intermittent extract rates: 15 litres a second for a bathroom, 30 for a kitchen with a cooker hood (60 without one), 30 for a utility room and 6 for a WC.
Like-for-like replacement
A new fan on the existing duct and wiring, often with an overrun timer or humidity sensor.
New fan through an outside wall
Core drilled, sleeved, wired from a fused spur and sealed outside.
Guide prices in Westbury
| Work | Guide price |
|---|---|
| Kitchen extract fan, or cooker hood ducted to outside (per kitchen) | £410–£725 inc VAT |
| Like-for-like extractor fan replacement (existing duct and wiring) (per fan) | £180–£305 inc VAT |
| New extractor fan through an outside wall (core drilled, wired, tested) (per fan) | £360–£575 inc VAT |
Guide prices using South West rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
Common reasons people call
- Mirror still steamed up 20 minutes after a shower
- Mould on the bathroom ceiling or around the window
- The fan runs but a sheet of toilet paper does not stick to the grille
Rules that apply in England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. For homes, it sets minimum extract rates such as 15 litres a second for a bathroom and 30 or 60 for a kitchen, and expects mechanical systems to be airflow-tested.
Questions from Westbury
What is the price of new extractor fans in Westbury?
Guide prices for Westbury use South West rates: like-for-like extractor fan replacement (existing duct and wiring) is typically £180 to £305 inc VAT per fan. We confirm a fixed price in writing before any work starts.
Can an extractor fan vent into the loft?
No. A fan should discharge to outside, because warm, moist air dumped in the loft condenses on the cold roof timbers and causes mould and rot there instead.
Should I get a fan with a humidity sensor?
A humidistat fan switches on when the air gets damp and runs until it clears, which suits family bathrooms and rentals where people forget the switch. A continuous-running fan is another good option.
Is the survey free in Westbury?
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.
How do I get a price for new extractor fans in Westbury?
Use the guide price tool, the form on this page, live chat, WhatsApp or call 0800 088 6341. A postcode and a couple of photos help us give you a useful answer first time.
Book a Westbury visit and we will test the fan you have before recommending a new one.
Extractor fans near Westbury
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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.