Coulsdon, Greater London
Extractor fan installation in Coulsdon
Bathroom, kitchen and utility fans sized to the Part F rates, ducted outside and tested. Covering Coulsdon and CR5, CR8 and SM7.
- From £210 inc VAT per fan
- Free survey

A good fan in the right place cures a lot of condensation in Coulsdon homes on its own.
We cover Coulsdon and the surrounding CR5, CR8 and SM7 postcodes as part of our work across Greater London. The survey is free for new installations on the UK mainland, and the quote that follows is fixed and in writing.
Extractor fans in Coulsdon at a glance
- Town
- Coulsdon, Greater London
- Postcode districts
- CR5, CR8 and SM7
- Nearby
- Purley (2 miles), Kenley (2 miles) and Banstead (3 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
Extractor fans for Coulsdon 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.
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.
Inline fans
A quiet fan in the loft serving one or two ceiling grilles in a shower room or en-suite.
Guide prices in Coulsdon
| Work | Guide price |
|---|---|
| Kitchen extract fan, or cooker hood ducted to outside (per kitchen) | £475–£825 inc VAT |
| 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 |
London rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
Signs it is time to call us
- Mirror still steamed up 20 minutes after a shower
- Mould on the bathroom ceiling or around the window
- The fan runs but a sheet of toilet paper does not stick to the grille
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 Coulsdon
Is the survey free in Coulsdon?
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.
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.
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.
How do I get a price for new extractor fans in Coulsdon?
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.
What area around Coulsdon do you work in?
All of Greater London. Near Coulsdon that includes Purley, Kenley, Banstead and Sanderstead.
Book a Coulsdon visit and we will test the fan you have before recommending a new one.
Extractor fans near Coulsdon
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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.