Blandford Forum, Dorset
Extractor fan installation in Blandford Forum
Bathroom, kitchen and utility fans sized to the Part F rates, ducted outside and tested. Covering Blandford Forum and DT11.
- From £180 inc VAT per fan
- Free survey

A good fan in the right place cures a lot of condensation in Blandford Forum homes on its own.
Work in Blandford Forum follows the rules for England and finishes with a written record of what was fitted and how it was set up.
Extractor fans in Blandford Forum at a glance
- Town
- Blandford Forum, Dorset
- Postcode districts
- DT11
- Nearby
- Wimborne Minster (9 miles), Broadstone (10 miles) and Canford Heath (11 miles)
- Price region
- South West
- 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.
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 Blandford Forum
| Work | Guide price |
|---|---|
| Inline fan for a shower room or en-suite (loft-mounted, one or two ceiling grilles) (per room) | £575–£925 inc VAT |
| Kitchen extract fan, or cooker hood ducted to outside (per kitchen) | £410–£725 inc VAT |
| Like-for-like extractor fan replacement (existing duct and wiring) (per fan) | £180–£305 inc VAT |
These ranges use our South West 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 Blandford Forum
Is the survey free in Blandford Forum?
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 Blandford Forum?
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 Blandford Forum do you work in?
All of Dorset. Near Blandford Forum that includes Wimborne Minster, Broadstone, Canford Heath and Ferndown.
Send a photo of the existing fan and the outside wall and we will price your Blandford Forum job quickly.
Extractor fans near Blandford Forum
More services in Blandford Forum
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.