Finchley, Greater London
Extractor fan installation in Finchley
Bathroom, kitchen and utility fans sized to the Part F rates, ducted outside and tested. Covering Finchley and N2, N3 and N12.
- From £210 inc VAT per fan
- Free survey

For Finchley landlords and homeowners alike, a tested fan is the cheapest ventilation upgrade there is.
Customers in Finchley can get a guide price online in a couple of minutes. It uses London rates, which is what we would charge for the same job anywhere in Greater London. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.
Extractor fans in Finchley at a glance
- Town
- Finchley, Greater London
- Postcode districts
- N2, N3 and N12
- Nearby
- Golders Green (2 miles), Friern Barnet (2 miles) and Totteridge (2 miles)
- Price region
- London
- 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.
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 Finchley
| 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.
Common reasons people call
- 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. It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.
Questions from Finchley
How do I get a price for new extractor fans in Finchley?
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.
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.
What area around Finchley do you work in?
All of Greater London. Near Finchley that includes Golders Green, Friern Barnet, Totteridge and Muswell Hill.
Do you cover Finchley and nearby?
Yes. We cover Finchley and nearby places including Golders Green, Friern Barnet, Totteridge and Muswell Hill. Send your postcode and we will confirm.
We can usually fit a replacement fan in Finchley in a single short visit.
Extractor fans near Finchley
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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.