Derry, County Londonderry
Extractor fan installation in Derry
Bathroom, kitchen and utility fans sized to the required rates, ducted outside and tested. Covering Derry and BT47 and BT48.
- From £160 inc VAT per fan
- By arrangement
For Derry landlords and homeowners alike, a tested fan is the cheapest ventilation upgrade there is.
Whether the property is in the middle of Derry or one of the villages around it, the process is the same: a look at the building, a written price, then fitting and testing on the agreed day.
Extractor fans in Derry at a glance
- Town
- Derry, County Londonderry
- Postcode districts
- BT47 and BT48
- Nearby
- Strabane (14 miles) and Limavady (15 miles)
- Price region
- Northern Ireland
- Survey
- By arrangement, travel quoted first
Extractor fans for Derry 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.
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 Derry
| 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 |
Northern Ireland rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job. Travel is quoted separately for this area.
Common reasons people call
- Mould on the bathroom ceiling or around the window
- The fan runs but a sheet of toilet paper does not stick to the grille
- The fan is noisy, rattling or has stopped
Rules that apply in Northern Ireland
Northern Ireland has its own building regulations, with ventilation guidance in Technical Booklet K. We design to the Northern Ireland guidance and measure the airflow achieved.
Questions from Derry
Do you cover Derry and nearby?
Yes. We cover Derry and nearby places including Strabane and Limavady. Send your postcode and we will confirm.
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.
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.
What is the price of new extractor fans in Derry?
Guide prices for Derry use Northern Ireland rates: like-for-like extractor fan replacement (existing duct and wiring) is typically £160 to £270 inc VAT per fan. We confirm a fixed price in writing before any work starts.
Is the survey free in Derry?
Visits here are by arrangement. Because of the ferry or long travel involved, we quote travel separately and in writing before you commit, and we can often combine visits to keep the cost down.
Book a Derry visit and we will test the fan you have before recommending a new one.
Extractor fans near Derry
More services in Derry
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.