Greater London · Extract fan repair and replacement
Extractor fan repair in Harrow Weald
Extract fan repair in Harrow Weald, surveyed first and signed off with a written report and pictures. Ask us for a fixed quote.
- Vibration spreading from the fan into the ducts
- A fan worn beyond sensible repair
- Weak extraction and a smoky kitchen
What happens if it’s left?
In kitchens with an interlocked gas supply, no extract can mean no cooking. Without extraction, the heat and fumes build up fast, so a failing fan is worth dealing with early. In Harrow Weald, as across London, ductwork often passes through shared risers and other people’s space.
When the work has to happen, how we reach it and how big the site is can all change the price. We take each of them into account and give you a fixed price before we start.
Why book with us
- Ventilation hygiene specialists since 2009
- A single point of contact for sites across the South East and London
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Survey first, then a fixed quote
Extract fan repair in Harrow Weald, done properly
Across Harrow Weald, we deal with fan faults of every kind, from a squeal at start-up to a fan that will not run at all. The fault is diagnosed, quoted at a fixed price and put right or fit a replacement when it’s beyond repair. The work covers fan motors, bearings and fan housings, and the jobs we see most are a fan that won’t start at all and an old fan that needs replacing.
In London, a kitchen without working extraction can’t keep cooking safely, and a closed kitchen loses a night’s trade. In Harrow Weald, as across London, fans often sit on a roof or deep in a plant space, so access is the first thing we ask about.
Duct Doctor has been trading since 2009, as a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. CHAS, SafeContractor and ISO 9001 are in place too, and we carry full insurance.
- Where
- Harrow Weald (HA3, HA7, HA1)
- Wider area
- Greater London
- Paperwork
- Photo report after every visit
- Quotes
- A fixed price before we start
- Hours
- Nights, weekends or holidays to suit you
- Phone
- 0345 646 2711
- Reviewed
- 30 October 2026
Keeping the system healthy
Results last longer with the right care. We suggest:
- Keep a record of any trips or stoppages
- Tell us about a new rattle or whine right away
- Get a noisy fan checked rather than slowed down
- Keep the grease filters clean and fitted
Keep an ear on the fan after the repair. A new noise or vibration is worth reporting early rather than waiting for it to fail.
A slipping belt or a loose mount is a small job. Ignored, they can lead to bigger failures, so it’s worth acting early.
How we price extract fan repair
Every site gets its own quote. This is what makes a difference:
- Site rules, permits and inductions
- When the work can happen, such as evenings, overnight or weekends
- Whether we need access equipment or extra panels
- The size of the system
One small site or a whole estate, the quote is built the same way: what needs doing, how we get to it and when. You will have a fixed price before we start.
What we need to know
The more you tell us, the more accurate the quote. When you get in touch, it helps to send:
- The times we could work without disrupting the site
- The site address and the type of premises
- Problems your staff have spotted
- A few general shots of the system
Photos are the quickest way to a quote: wide shots of the system, close-ups of anything that worries you and how we’d get to it. Tell us what kind of site it is and when it’s open, and we can price many jobs without a visit.
When something else is needed
We’ll always give you a straight diagnosis, so here’s what extract fan repair won’t do:
- A greasy canopy and duct that a fan repair won’t touch
- Faults in the building’s electrical supply, which need an electrician
- Faults on the gas side of an interlock system, which need a Gas Safe registered engineer
If you’re not sure, just ring 0345 646 2711 or use the quote form and we will give you a straight answer.
What we work on in Harrow Weald
- Bearings
- Fan housings
- Belts and pulleys
- Kitchen extract fans
- Roof and wall fans
- Fan motors
The process
The first job on site is protection: floors, worktops and anything near the work are covered. Then we make the system safe and start. It takes anything from an hour or two to a full visit, depending on the fault, and we clear up before we go. Getting kit into a London building takes planning, so let us know where we can load and park in Harrow Weald.
- You describe the fault and we arrange a visit.
- On site, the fan is safely isolated.
- The fan and its controls are checked to pin down the fault.
- A fixed quote for the repair or replacement follows.
- We fix the fault and run the fan to check it.
Preparing for the visit
- Arrange a key holder or contact on site
- Make sure equipment near the work can be switched off and left to cool
- Let us know about permits to work or site inductions
Getting a quote
Some systems can be priced from pictures; others need a survey. Larger sites, and anything hidden behind walls, ceilings or floors, are normally surveyed first. Either way, you get a fixed price before any work starts.
Related advice
What the work involves, part by part
Direct-drive fans
Direct-drive fans have the impeller mounted straight on the motor. With no belts to wear, we look at the motor, bearings and impeller.
Motors and bearings
The motor and its bearings work hardest. Heat, grease and long running hours all wear them.
Extract fan repair in Harrow Weald: local notes
The FSA’s food hygiene register shows about 99 restaurants, cafés and works canteens and about 45 takeaways and sandwich shops in and around Harrow Weald, up to about a mile and a half out. Every one of them that cooks under a canopy depends on its extract fan to keep cooking. A failed fan in a London kitchen typically means a closed kitchen, so access details help us plan the repair. Food hygiene inspections in Harrow Weald are the job of Harrow council’s environmental health team. Food premises are expected to have suitable and sufficient ventilation under food hygiene rules. That makes a fan repair urgent rather than something to put off.
If you run a school kitchen, at a school such as Salvatorian Roman Catholic College or nearby, a fan that is getting noisy is best repaired in the holidays before it fails in term. If you run a church or community hall kitchen, near St Michael & All Angels or elsewhere in Harrow Weald, an extract fan that rarely runs can seize or fail when it’s needed. If you cook near Headstone Lane station, long trading hours wear fan belts and bearings, so noise and vibration are worth reporting early.
Harrow Weald is about 2 miles west of Stanmore, in Greater London. Anywhere in HA3, we can take on extract fan repair. Harrow Weald is one of 764 towns, villages and districts in Greater London where we work for extract fan repair. There’s also a page for London, about 13 miles away.
We work across the HA3, HA7 and HA1 postcode area for extract fan repair and the roads nearby. Streets in the area include High Road, Elms Road and Tudor Road, all of which we cover for extract fan repair. Main roads around Harrow Weald include the A409, which makes travel easy for extract fan repair. Close by, we work in Belmont (1 mile east), Headstone (1 mile west), Hatch End (2 miles west), Stanmore (2 miles east) and Bushey Heath (2 miles north). Within a short drive, we also cover London (13 miles south-east), City of Westminster (10 miles south-east), Marylebone (10 miles south-east), Kensington (9 miles south-east), St Pancras (11 miles south-east) and Shoreditch (12 miles south-east).
Around Harrow Weald
Typical jobs here are in premises near The Duck in the Pond pub, Weald Rise Primary School and Headstone Manor Recreation Ground and the streets around them. Harrow Weald’s nearest station is Headstone Lane station, roughly 0.8 miles west of the centre. A little further out are Northwick Park Hospital (2.1 miles south) and Cat Museum (less than half a mile south). Not far away are Harrow Weald Common and Northala Fields.
Places near Harrow Weald
Also in Harrow Weald
FAQs for Harrow Weald
Is there an emergency callout for extract fans in Harrow Weald?
Extract fan emergencies in Harrow Weald are covered around the clock. Use 0345 646 2711, our emergency number, at any time. If you can, stop cooking until the fan is checked.
Can you come to Harrow Weald after we close?
Yes, out-of-hours work is a big part of what we do. That way a site in Harrow Weald does not have to lose a day’s trading. When you call 0345 646 2711 or drop us a line, mention when the site is quiet.
What happens if you cannot reach some of it?
Anything we cannot reach goes on the report, with pictures where possible, and we explain what access is needed, such as extra access panels in ductwork.
What should go in our maintenance log?
Every certificate and report from each visit, kept together in your maintenance log, along with your own cleaning log. BESA says certificates should show the date, location and technician.
Which kinds of sites do you work on?
All kinds of commercial and public premises: kitchens, offices, schools, healthcare, retail, leisure and food production. Work is timed around how each site runs.
What accreditations do you have?
Duct Doctor is a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. CHAS, SafeContractor and ISO 9001 are in place too, and we carry full insurance.
What will a fan repair or replacement cost?
We price each job after finding the cause. A belt and a new fan are very different jobs so the first step is a diagnosis.
Is there a survey before the work?
Yes, always. Diagnosis comes before treatment: the survey shows what needs doing and what access we need, and the quote is based on that.
In-house cleaning or a specialist?
Good housekeeping makes our visits easier, not unnecessary. Clean filters and tidy surfaces slow the build-up, but the parts you cannot see still need a specialist at the right interval.
For ventilation and air handling systems, in-house care is mostly about checks: keeping grilles clear, noting unusual noise or smells and logging filter changes. The inside of ducts and units needs a specialist.