Greater London · Extract fan repair and replacement
Extract fan repair and replacement in Mill Hill, Greater London
Professional extract fan repair in and around Mill Hill, booked around your opening hours and finished with a written report and pictures.
- A humming noise from the fan motor
- Weak extraction and a smoky kitchen
- A fan that will not start at all
How the job changes from site to site
Belt-driven fans
In a belt-driven fan, the motor drives the impeller by belt. Worn belts squeal and slow the fan down, and pulleys and bearings need checking too.
Direct-drive fans
Many kitchen extracts use direct-drive fans. When the motor fails, replacing the whole fan unit can make more sense than repairing it and we will talk you through it.
How we handle extract fan repair in Mill Hill
Our engineers handle all sorts of fan faults in Mill Hill, from rattling and humming to a fan that has stopped dead. The fault is diagnosed, quoted at a fixed price and put right or fit a replacement when it’s beyond repair. If you have an old fan that needs replacing and an extract that vibrates through the ductwork, we can help, from fan motors, bearings and kitchen extract fans onwards.
In London, getting a new fan to the roof or plant room can take planning, and in Mill Hill, parking and lifting are part of that. Work can be done after service, so the kitchen loses as little time as possible.
We’re CHAS and SafeContractor accredited, we hold ISO 9001 and we are fully insured. We’re also a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we have been trading since 2009.
- Place
- Mill Hill (NW7, N20)
- Wider area
- Greater London
- Paperwork
- Photo report after every visit
- Quote
- A fixed price before work begins
- When we work
- Out of hours as standard, 24/7 emergency line
- Call
- 0345 646 2711
- Reviewed
- 30 October 2026
Also near Mill Hill
More services for Mill Hill
What affects the cost of extract fan repair
We quote each job individually. These are the things that affect it:
- The condition we find in the survey
- One-off work versus a regular cycle
- Whether several sites go on one quote
- The size of the system
The cost depends on how big the system is, the condition it’s in and access to every part of it. We give you a fixed price before we start, so you know where you stand.
What we need to know
When you contact us, these details help:
- The roof, plant room or outside wall the system runs to
- Detail shots of panels, filters and grilles
- Your opening hours and when the area is out of use
- Where the site is and what kind of site it is
Quoting starts with a diagnosis, either from pictures and details you send or from a site visit. Then we send a fixed price, before work begins.
Staff cleaning versus specialist work
If your staff spot something between visits, such as dripping grease, a noisy fan, a smell or a filter that won’t come clean, they should report it rather than try to fix it. We can diagnose it and quote.
Staff cleaning does not replace a specialist visit; it supports it. Regular in-house cleaning slows the build-up, but hidden parts of the system still need specialist attention.
Extract fans in Mill Hill
Look up Mill Hill on the FSA’s food hygiene register and you will find about 46 cafés, restaurants and staff canteens and about 21 takeaways and sandwich shops in and around Mill Hill, 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. In London, a fan on a roof or in a basement can take planning to reach, with parking and loading to arrange. In Mill Hill, food businesses are inspected by environmental health officers from Barnet council. Food hygiene rules expect food premises to have suitable and sufficient ventilation. Getting the fan running again is the priority.
School kitchens can’t easily serve lunch without extraction, so if you look after one at a school like St Paul's CofE Primary School NW7, fix a failing fan before term starts.
Mill Hill is about 1 mile north-east of Burnt Oak, in Greater London. Mill Hill gets the same approach as every site we work on: a survey first, a fixed quote, work timed around your hours and a report with photos. Our area takes in 764 places across Greater London, from busy centres to quieter spots. We also work in London, around 10 miles away.
All of NW7 and N20 is within our area for extract fan repair, from the main roads to the quietest streets. Extract fan repair is available to premises on Daws Lane, Byron Road and High Street and the roads around them. Close by, we work in The Hale (1 mile west), Burnt Oak (1 mile south-west), Grahame Park (1 mile south), Totteridge (2 miles north-east) and Edgware (2 miles west). Further out, we also cover London (10 miles south-east), City of Westminster (8 miles south-east), Marylebone (8 miles south-east), Kensington (8 miles south), St Pancras (8 miles south-east) and Shoreditch (9 miles south-east).
Local landmarks in Mill Hill
Typical jobs here are in premises near Mill Hill School, Copthall School and Bittacy Hill Park. Nearby too are Francis Skaryna Belarusian Library and Museum (2 miles east) and Rising Sun pub (0.7 miles north-west). The nearest railway station is Mill Hill Broadway station, roughly 1 mile south-west. A little further out are Broadwalk Centre (2 miles west) and Francis Skaryna Belarusian Library and Museum (2 miles east). Green spaces nearby include The Mill Field and Darland's Lake.
The process
On the day, we arrive at the time agreed with you, which is often after service, overnight or at a weekend. Equipment that has to be off is switched off and allowed to cool before work begins, and floors and nearby surfaces are sheeted. The work itself takes a few hours for most repairs, longer for a full fan replacement. Loading bays, visitor permits and roof access are the first things we ask about for a site in Mill Hill.
- You describe the fault and we arrange a visit.
- On site, the fan is safely isolated.
- We diagnose the fault, checking the controls as well as the fan.
- A fixed quote for the repair or replacement follows.
- The work is done and the fan is tested running.
Before we arrive
- Tell us where we can park and unload
- Tell us the best time to work, such as after service or at a weekend
- Mention any locked doors, roof access or ceiling voids
Ask for a quote
Want a quote for extract fan repair? Please call us on 0345 646 2711, or email photos and tell us about the site. We will talk you through the work and send you a fixed quote before you commit to anything.
Advice
What a clean will not put right
Before you book, it helps to know what’s not included:
- Faults in the building’s electrical supply, which need an electrician
- Smells from the discharge that need odour control equipment
- Faults on the gas side of an interlock system, which need a Gas Safe registered engineer
If in doubt, give us a ring on 0345 646 2711 or drop us a line and we will say what we think before booking.
What we work on in Mill Hill
- Bearings
- Fan housings
- Roof and wall fans
- Fan motors
- Belts and pulleys
- Kitchen extract fans
When to call us in Mill Hill
Blocked filters and greasy ducts make the fan work harder. A motor that strains runs hot and may cut out or fail.
Most sites get in touch when they notice one of these:
- A dead fan motor
- A worn or slipping fan belt
- A fan running too slowly to clear the kitchen
- A fan that keeps cutting out
If you run a church or community hall kitchen, near St Paul's Church or elsewhere in Mill Hill, an extract fan that rarely runs can seize or fail when it’s needed.
What to look for in a quote
- If they look at the system before pricing
- Proof of accreditation you can verify
- Whether VAT is included
- What hours they’ll be on site
Why it’s worth doing now in Mill Hill
Some kitchens run a noisy fan on a lower speed to cut the noise. That reduces extraction without fixing anything while the underlying wear continues. Diagnosing the fault properly is the lasting answer. A busy site in Mill Hill builds up dirt and wear quickly, so putting it off makes the eventual job larger.
When the work has to happen, how we reach it and how big the site is all affect the cost. Each of those is built into the quote and give you a fixed price before we start.
Why choose Duct Doctor in Mill Hill
- Survey first, then a fixed quote
- CHAS and SafeContractor accredited, with ISO 9001
- In business since 2009
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
Take a look at what affects the cost or our accreditations and certificates.
Questions from Mill Hill
Does London parking affect a job in Mill Hill?
Parking and loading in London need planning, so tell us about bays, permits and building rules when you book. Much of our London work is done overnight, which helps.
Is there an emergency callout for extract fans in Mill Hill?
Our emergency line runs 24/7, and Mill Hill is within the area we cover. Use 0345 646 2711, our emergency number, at any time. Details of the make and model help us plan the repair.
Do I get a report after the visit?
Yes, always. The report is dated and includes photos, plus a certificate via the BESCA Vent Hygiene Elite portal for TR19® Grease cleans. Keep it in your maintenance log.
Where does the waste go?
It leaves the site with us at the end of the visit. During the work, it’s contained to keep the area clean.
Do we need to close while you work?
Normally not. Out-of-hours visits keep the disruption down. Larger jobs can be phased over several visits so parts stay in use.
How far ahead should we book?
That depends on the slot you want and the size of the job. Mention your preferred dates with your enquiry, and for anything urgent, ring our 24/7 emergency line.
Is it worth cleaning the extract while you are fixing the fan?
The ductwork is a separate job. We’ll tell you what we see and quote for a TR19 clean if it’s needed.
What should go in our maintenance log?
Everything that shows the system is looked after: our reports and pictures, any certificates and your in-house logs. One maintenance log per site keeps it simple.