Dorchester, Dorset
Extractor fan installation in Dorchester
Bathroom, kitchen and utility fans sized to the Part F rates, ducted outside and tested. Covering Dorchester and DT1, DT2 and DT3.
- From £180 inc VAT per fan
- Free survey
A good fan in the right place cures a lot of condensation in Dorchester homes on its own.
Customers in Dorchester can get a guide price online in a couple of minutes. It uses South West rates, which is what we would charge for the same job anywhere in Dorset. The survey is free for new installations on the UK mainland, and the quote that follows is fixed and in writing.
Extractor fans in Dorchester at a glance
- Town
- Dorchester, Dorset
- Postcode districts
- DT1, DT2 and DT3
- Nearby
- Weymouth (7 miles), Portland (10 miles) and Bridport (14 miles)
- Price region
- South West
- Survey
- Free survey (UK mainland)
How we approach extractor fans in Dorchester
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.
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 Dorchester
| Work | Guide price |
|---|---|
| New ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) (per fan) | £465–£775 inc VAT |
| 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 |
Guide prices using South West rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
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 Dorchester
How do I get a price for new extractor fans in Dorchester?
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.
How long does fitting a fan take?
A straight replacement takes an hour or two. A new fan with a core-drilled hole or a duct through the loft usually takes half a day.
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 area around Dorchester do you work in?
All of Dorset. Near Dorchester that includes Weymouth, Portland, Bridport and Blandford Forum.
Do you cover Dorchester and nearby?
Yes. We cover Dorchester and nearby places including Weymouth, Portland, Bridport and Blandford Forum. Send your postcode and we will confirm.
Send a photo of the existing fan and the outside wall and we will price your Dorchester job quickly.
Extractor fans near Dorchester
More services in Dorchester
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.