Keynsham, Somerset
Extractor fan installation in Keynsham
Bathroom, kitchen and utility fans sized to the Part F rates, ducted outside and tested. Covering Keynsham and BS14, BS30 and BS31.
- From £180 inc VAT per fan
- Free survey

A good fan in the right place cures a lot of condensation in Keynsham homes on its own.
Work in Keynsham follows the rules for England and finishes with a written record of what was fitted and how it was set up.
Extractor fans in Keynsham at a glance
- Town
- Keynsham, Somerset
- Postcode districts
- BS14, BS30 and BS31
- Nearby
- Kingswood (3 miles), Mangotsfield (5 miles) and Bristol (5 miles)
- Price region
- South West
- Survey
- Free survey (UK mainland)
What the work involves
For England, Approved Document F gives minimum intermittent extract rates: 15 litres a second for a bathroom, 30 for a kitchen with a cooker hood (60 without one), 30 for a utility room and 6 for a WC. Wales, Scotland and Northern Ireland have their own rules, which we follow where the job is.
Inline fans
A quiet fan in the loft serving one or two ceiling grilles in a shower room or en-suite.
Kitchen extract and cooker hoods
A wall or window fan, or a cooker hood ducted outside rather than recirculating.
Guide prices in Keynsham
| Work | Guide price |
|---|---|
| Kitchen extract fan, or cooker hood ducted to outside (per kitchen) | £410–£725 inc VAT |
| Like-for-like extractor fan replacement (existing duct and wiring) (per fan) | £180–£305 inc VAT |
| New extractor fan through an outside wall (core drilled, wired, tested) (per fan) | £360–£575 inc VAT |
Guide prices using South West rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
Signs it is time to call us
- A kitchen with a recirculating hood and condensation on the windows
- Mirror still steamed up 20 minutes after a shower
- Mould on the bathroom ceiling or around the window
Rules that apply in England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. For homes, it sets minimum extract rates such as 15 litres a second for a bathroom and 30 or 60 for a kitchen, and expects mechanical systems to be airflow-tested.
Questions from Keynsham
Do you cover Keynsham and nearby?
Yes. We cover Keynsham and nearby places including Kingswood, Mangotsfield, Bristol and Bishopsworth. Send your postcode and we will confirm.
How much does it cost to fit an extractor fan?
Replacing a fan on an existing duct usually costs £175 to £295 including VAT. A new fan through an outside wall is typically £345 to £545, and a fan ducted to outside through the loft £445 to £745.
What size extractor fan does a bathroom need?
In England a bathroom fan should extract at least 15 litres a second, measured at the fan, under Approved Document F. Long or bendy duct runs reduce flow, so the fan often needs to be rated higher than the minimum.
What is the price of new extractor fans in Keynsham?
Guide prices for Keynsham use South West rates: like-for-like extractor fan replacement (existing duct and wiring) is typically £180 to £305 inc VAT per fan. We confirm a fixed price in writing before any work starts.
Is the survey free in Keynsham?
For new installations on the UK mainland, yes. The survey is free and the quote that follows is fixed and in writing. Servicing, testing and repair visits are charged, and we confirm the cost before booking.
Book a Keynsham visit and we will test the fan you have before recommending a new one.
Extractor fans near Keynsham
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