- Postcode districts
- SG1, SG2
- Nearby
- Hitchin, Letchworth Garden City and Welwyn Garden City
- Guide price
- £265–£650
- Typical time on site
- half a day
- Water
- Very hard across most of Hertfordshire
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Stevenage?
Our guide price for a bathroom extractor fan in Stevenage is £265–£650 including VAT. Prices in East of England run at about 6% above the national guide, mainly because of labour rates. 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 Stevenage including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Stevenage
We work right across Stevenage — SG1 and SG2 — and in neighbouring Hitchin and Letchworth Garden City.
Across a large town like Stevenage, homes range from older terraces to newer estates; the survey tells us which pipework and floor we are dealing with. Fans fitted in Stevenage bathrooms are wired by a qualified electrician, with RCD protection and an isolator outside the room. We check the duct route at Stevenage surveys, because a short, straight run to outside matters more than the fan's headline figure.
Water across much of Hertfordshire 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
- 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
- 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
Decisions to make first
Axial, centrifugal or inline
Axial fans suit short, straight runs; centrifugal fans cope better with longer ducts; inline fans sit in the loft and are the quietest in the room.
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.
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.

