Home ventilation, County Durham
Extractor fan installation in County Durham
Bathroom, kitchen and utility fans sized to the Part F rates, ducted outside and tested, across County Durham.
- From £160 inc VAT per fan
- Free survey

If the bathroom mirror in your County Durham home stays steamed up, the fan probably is not moving enough air.
County Durham has every kind of building, from old terraces to new estates and business parks, and every job is designed around the building in front of us, not a standard kit.
Extractor fans in County Durham at a glance
- Area
- County Durham
- Towns listed
- 14, largest Darlington
- Postcode districts
- DH2, DH9, DH8, DH9, DL4 and DL5
- Price region
- North East
- Survey
- Free survey (UK mainland)
What the work involves
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. Wales, Scotland and Northern Ireland have their own rules, which we follow where the job is.
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.
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 County Durham
| Work | Guide price |
|---|---|
| Like-for-like extractor fan replacement (existing duct and wiring) (per fan) | £160–£270 inc VAT |
| New extractor fan through an outside wall (core drilled, wired, tested) (per fan) | £315–£500 inc VAT |
| New ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) (per fan) | £410–£675 inc VAT |
| Inline fan for a shower room or en-suite (loft-mounted, one or two ceiling grilles) (per room) | £500–£825 inc VAT |
| Kitchen extract fan, or cooker hood ducted to outside (per kitchen) | £365–£650 inc VAT |
These ranges use our North East rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
Signs it is time to call us
- 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 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.
How the job runs
- Quick survey
- Choose the fan
- Fit and duct
- Wire
- Test
Towns we cover in County Durham
- Darlington
- Hartlepool
- Stockton-on-Tees
- Durham
- Chester-le-Street
- Billingham
- Stanley
- Consett
- Newton Aycliffe
- Bishop Auckland
- Seaham
- Peterlee
- Spennymoor
- Annfield Plain
Questions about extractor fan installation in County Durham
Are prices different in County Durham?
Our guide prices are adjusted by region. In County Durham we use North East rates, so like-for-like extractor fan replacement (existing duct and wiring) is typically £160 to £270 inc VAT per fan.
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.
Is the survey free in County Durham?
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.
Which rules apply to ventilation in County Durham?
In England, ventilation in new and altered homes is covered by Approved Document F of the Building Regulations. Landlords also have duties under the Housing Health and Safety Rating System, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.
Tell us how many rooms need fans in your County Durham home and we will quote them together.
Other services in County Durham
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.