Cockfosters, Greater London
Extractor fan installation in Cockfosters
Bathroom, kitchen and utility fans sized to the Part F rates, ducted outside and tested. Covering Cockfosters and EN4, N14 and N20.
- From £210 inc VAT per fan
- Free survey

A good fan in the right place cures a lot of condensation in Cockfosters homes on its own.
Work in Cockfosters follows the rules for England and finishes with a written record of what was fitted and how it was set up.
Extractor fans in Cockfosters at a glance
- Town
- Cockfosters, Greater London
- Postcode districts
- EN4, N14 and N20
- Nearby
- East Barnet (1 mile), New Barnet (1 mile) and Hadley Wood (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
Extractor fans for Cockfosters homes
Many existing fans were never doing their job: undersized, ducted into the loft space, fitted with a flex duct crushed in the joists, or switched off by occupants because they were noisy. 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.
Like-for-like replacement
A new fan on the existing duct and wiring, often with an overrun timer or humidity sensor.
New fan through an outside wall
Core drilled, sleeved, wired from a fused spur and sealed outside.
Guide prices in Cockfosters
| Work | Guide price |
|---|---|
| Like-for-like extractor fan replacement (existing duct and wiring) (per fan) | £210–£355 inc VAT |
| New extractor fan through an outside wall (core drilled, wired, tested) (per fan) | £415–£650 inc VAT |
| New ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) (per fan) | £525–£900 inc VAT |
These ranges use our London rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
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. It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.
Questions from Cockfosters
What is the price of new extractor fans in Cockfosters?
Guide prices for Cockfosters use London rates: like-for-like extractor fan replacement (existing duct and wiring) is typically £210 to £355 inc VAT per fan. We confirm a fixed price in writing before any work starts.
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.
Do you need building regulations for a new extractor fan?
Fitting or replacing an extractor fan has to meet the ventilation and electrical rules, and certain electrical work is notifiable. We do the work to the current standards. Electrical work that is notifiable is certified by a registered electrician, and you get a copy of the certificate and our airflow readings.
Is the survey free in Cockfosters?
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 Cockfosters?
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.
Tell us how many rooms need fans in your Cockfosters home and we will quote them together.
Extractor fans near Cockfosters
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Answer a few questions for a price range, or send photos and we will come back to you with a written quote.