- Postcode districts
- LL55
- Nearby
- Bangor, Holyhead and Llandudno
- Guide price
- £230–£550
- Typical time on site
- half a day
- Water
- Soft across most of Gwynedd
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Caernarfon?
For Caernarfon, our guide range for a bathroom extractor fan is £230 to £550 including VAT. Labour costs in Wales put local prices at about 7% below the UK guide figure. 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 Caernarfon including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Caernarfon
We work right across Caernarfon — LL55 — and in neighbouring Bangor and Holyhead.
Caernarfon gets the same process as anywhere else: a free survey at your home and a written, itemised quote. We check the duct route at Caernarfon surveys, because a short, straight run to outside matters more than the fan's headline figure. If your Caernarfon bathroom has black mould on the ceiling or silicone, the fan and its duct are the first things we check.
Water across much of Gwynedd is soft. 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
- Core-drilling through the wall, or ducting through the loft to a roof or soffit vent
- A check of the room, any existing fan or vent, and the shortest route to the outside
- A fan chosen to meet the bathroom extract rate: 15 l/s intermittent or 8 l/s continuous
- Rigid or semi-rigid ducting kept short and straight, and insulated where it crosses a cold loft
Decisions to make first
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.
Wall or ceiling
A wall fan on an outside wall is the simplest. A ceiling fan over the shower takes steam away at source but needs ducting through the loft.
Rules that apply in Wales
Wales has its own Part F with similar extract rates, and its own Part P, under which new fan wiring in a bathroom is notifiable.
