- Postcode districts
- HP6, HP7
- Nearby
- Amersham on the Hill, Chesham and Chalfont St Peter
- Guide price
- £280–£650
- Typical time on site
- half a day
- Water
- Hard across most of Buckinghamshire
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Amersham?
Guide price in Amersham: £280–£650 including VAT, depending on the room and what you choose. Labour costs in South East England put local prices at about 12% above the UK guide figure. The figure depends on the size of the room, whether anything moves, and the products you pick.
Extractor fan
- Wired to regulations
Inline fan
- Quiet fan in the loft void
Continuous extract
- Boost on humidity
Guide prices for Amersham including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Amersham
We work right across Amersham — HP6 and HP7 — and in neighbouring Amersham on the Hill and Chesham.
Amersham gets the same process as anywhere else: a free survey at your home and a written, itemised quote. Fans fitted in Amersham bathrooms are wired by a qualified electrician, with RCD protection and an isolator outside the room. For windowless bathrooms in Amersham homes, continuous extract that boosts on humidity often works better than a fan tied to the light switch.
Water across much of Buckinghamshire is hard. Steam carries that scale onto mirrors and glass, so a fan that clears the room quickly helps on both counts. Hardness varies street by street, so check the figure for your postcode with your water supplier.
What the job includes
- Making good around the fan and checking that it extracts properly at the grille
- Rigid or semi-rigid ducting kept short and straight, and insulated where it crosses a cold loft
- A fan chosen to meet the bathroom extract rate: 15 l/s intermittent or 8 l/s continuous
- A backdraught shutter and external grille, so cold air does not blow back in
Decisions to make first
Intermittent or continuous
An intermittent fan runs during and after use. A continuous fan runs quietly all the time at a low rate and boosts when humidity rises.
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 England
In England, Approved Document F sets bathroom extract at 15 l/s for an intermittent fan or 8 l/s for continuous extract. Wiring a new fan alters a circuit in a room with a bath or shower, so it is notifiable under Part P.
