- Postcode districts
- SL1, SL2, SL3
- Nearby
- Windsor, Maidenhead and Gerrards Cross
- Guide price
- £280–£650
- Typical time on site
- half a day
- Water
- Hard across most of Berkshire
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Slough?
For Slough, our guide range for a bathroom extractor fan is £280 to £650 including VAT. 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
- Fan with timer or humidistat
Inline fan
- Ducting to a roof or soffit vent
Continuous extract
- Good for windowless rooms
Guide prices for Slough including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Slough
In Slough we cover SL1, SL2 and SL3; we also cover Windsor, 1.8 miles away, and Maidenhead.
Across a large town like Slough, homes range from older terraces to newer estates; the survey tells us which pipework and floor we are dealing with. If your Slough bathroom has black mould on the ceiling or silicone, the fan and its duct are the first things we check. For windowless bathrooms in Slough homes, continuous extract that boosts on humidity often works better than a fan tied to the light switch.
Water across much of Berkshire 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
- A fan chosen to meet the bathroom extract rate: 15 l/s intermittent or 8 l/s continuous
- Core-drilling through the wall, or ducting through the loft to a roof or soffit vent
- Wiring by a qualified electrician, with an isolator outside the room and RCD protection
- A check of the room, any existing fan or vent, and the shortest route to the outside
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.
Noise
Compare the stated noise level in decibels. Inline fans and low-speed continuous fans are much quieter in the room than budget axial fans.
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.

