Knowle, West Midlands
Extractor fan installation in Knowle
Bathroom, kitchen and utility fans sized to the Part F rates, ducted outside and tested. Covering Knowle and B91, B93 and B94.
- From £175 inc VAT per fan
- Free survey
A good fan in the right place cures a lot of condensation in Knowle homes on its own.
Work in Knowle follows the rules for England and finishes with a written record of what was fitted and how it was set up.
Extractor fans in Knowle at a glance
- Town
- Knowle, West Midlands
- Postcode districts
- B91, B93 and B94
- Nearby
- Solihull (3 miles), Shirley (4 miles) and Acocks Green (6 miles)
- Price region
- West Midlands
- Survey
- Free survey (UK mainland)
How we approach extractor fans in Knowle
The rate a fan delivers through a real duct run is often far lower than the number on the box, which is why we size to the room and test the result. 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.
New fan through an outside wall
Core drilled, sleeved, wired from a fused spur and sealed outside.
Ducted to outside through the loft
Insulated duct to a roof, ridge or soffit outlet so warm moist air does not condense in the loft.
Guide prices in Knowle
| Work | Guide price |
|---|---|
| Kitchen extract fan, or cooker hood ducted to outside (per kitchen) | £395–£695 inc VAT |
| Like-for-like extractor fan replacement (existing duct and wiring) (per fan) | £175–£295 inc VAT |
| New extractor fan through an outside wall (core drilled, wired, tested) (per fan) | £345–£545 inc VAT |
Guide prices using West Midlands 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
- The duct ends in the loft rather than outside
- A kitchen with a recirculating hood and condensation on the windows
- Mirror still steamed up 20 minutes after a shower
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 Knowle
What is the price of new extractor fans in Knowle?
Guide prices for Knowle use West Midlands rates: like-for-like extractor fan replacement (existing duct and wiring) is typically £175 to £295 inc VAT per fan. We confirm a fixed price in writing before any work starts.
Can an extractor fan vent into the loft?
No. A fan should discharge to outside, because warm, moist air dumped in the loft condenses on the cold roof timbers and causes mould and rot there instead.
Should I get a fan with a humidity sensor?
A humidistat fan switches on when the air gets damp and runs until it clears, which suits family bathrooms and rentals where people forget the switch. A continuous-running fan is another good option.
Is the survey free in Knowle?
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.
How do I get a price for new extractor fans in Knowle?
Use the guide price tool, the form on this page, live chat, WhatsApp or call 0800 088 6341. A postcode and a couple of photos help us give you a useful answer first time.
Send a photo of the existing fan and the outside wall and we will price your Knowle job quickly.
Extractor fans near Knowle
More services in Knowle
Get a guide price in two minutes
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.