- Postcode districts
- SE3, SE10, SE13
- Nearby
- Greenwich, Catford and Eltham
- Guide price
- £300–£750
- Typical time on site
- half a day
- Water
- Very hard across most of Greater London
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Blackheath?
Our guide price for a bathroom extractor fan in Blackheath is £300–£750 including VAT. We adjust the national guide for London, where prices are typically about 25% above the UK average. 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 Blackheath including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Blackheath
We work right across Blackheath — SE3, SE10 and SE13 — and in neighbouring Greenwich and Catford.
London homes in Blackheath often mean stairs, permits and neighbours below; we plan the logistics as carefully as the bathroom. In Blackheath flats, a new vent through an outside wall may need freeholder consent, so we raise it at the survey. Fans fitted in Blackheath bathrooms are wired by a qualified electrician, with RCD protection and an isolator outside the room.
Water across much of Greater London is very 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
- 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
- Making good around the fan and checking that it extracts properly at the grille
- Core-drilling through the wall, or ducting through the loft to a roof or soffit vent
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 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.
