Croxley Green, Hertfordshire
Extractor fan installation in Croxley Green
Bathroom, kitchen and utility fans sized to the Part F rates, ducted outside and tested. Covering Croxley Green and HA6, WD3 and WD18.
- From £185 inc VAT per fan
- Free survey

We fit bathroom, kitchen and utility fans across Croxley Green, sized to the room rather than the cheapest box.
For extractor fan installation in Croxley Green, send us the postcode, a few photos and a rough idea of the rooms involved. We will tell you what we would fit and roughly what it costs before arranging a visit.
Extractor fans in Croxley Green at a glance
- Town
- Croxley Green, Hertfordshire
- Postcode districts
- HA6, WD3 and WD18
- Nearby
- Batchworth (1 mile), Rickmansworth (1 mile) and Northwood (2 miles)
- Price region
- East of England
- Survey
- Free survey (UK mainland)
How we approach extractor fans in Croxley Green
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.
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 Croxley Green
| Work | Guide price |
|---|---|
| Inline fan for a shower room or en-suite (loft-mounted, one or two ceiling grilles) (per room) | £575–£950 inc VAT |
| Kitchen extract fan, or cooker hood ducted to outside (per kitchen) | £415–£725 inc VAT |
| Like-for-like extractor fan replacement (existing duct and wiring) (per fan) | £185–£310 inc VAT |
Guide prices using East of England rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
Common reasons people call
- 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
In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). 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 Croxley Green
What area around Croxley Green do you work in?
All of Hertfordshire. Near Croxley Green that includes Batchworth, Rickmansworth, Northwood and West Watford.
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.
Do you cover Croxley Green and nearby?
Yes. We cover Croxley Green and nearby places including Batchworth, Rickmansworth, Northwood and West Watford. Send your postcode and we will confirm.
What is the price of new extractor fans in Croxley Green?
Guide prices for Croxley Green use East of England rates: like-for-like extractor fan replacement (existing duct and wiring) is typically £185 to £310 inc VAT per fan. We confirm a fixed price in writing before any work starts.
Get a guide price online, then we confirm it for your Croxley Green home at the visit.
Extractor fans near Croxley Green
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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.