Greater London · Extract fan repair and replacement

Extract fan repair and replacement in Lewisham, Greater London

Extract fan repair across Lewisham and nearby, timed so the site keeps working and finished with a written report and pictures.

  • An extract that vibrates through the ductwork
  • A knocking noise from the extract fan
  • A fan running too slowly to clear the kitchen

Extract fan repair near Lewisham

In-house cleaning or a specialist?

In-house cleaning and specialist cleaning do different jobs. Wiping filters daily and washing them weekly keeps the visible parts in order, but they do not reach the grease that builds up further in. Reaching it takes a specialist with the right equipment.

Keep a record of what your team does. A simple log of filter washes, wipe-downs and checks helps show that the system is managed between specialist visits, alongside our reports.

About our extract fan repair in Lewisham

Extract fan repair starts with a diagnosis. A noisy fan might need cleaning, new bearings or a new belt, while a fan that will not start may have a motor or control fault. We explain the problem, and what it will take, before we start. If you have an extract fan that has stopped working and a knocking noise from the extract fan, we can help.

Replacing a fan in a London building often means working at height or in a tight plant space, with parking and lifting to arrange in Lewisham. Work can be done after service, so the kitchen loses as little time as possible.

We are CHAS and SafeContractor accredited, we hold ISO 9001 and we’re fully insured. We’re also a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, trading since 2009.

Location
Lewisham (SE13, SE8, SE6)
Wider area
Greater London
Reporting
Photo report after every visit
Price
A fixed quote up front
Working hours
Evenings, overnight and weekends; 24/7 emergencies
Telephone
0345 646 2711
Updated
30 October 2026
Five Duct Doctor technicians in navy uniforms with the company vans

Keeping the system healthy

To keep the system working properly between visits:

  • Save our number for the 24/7 emergency line
  • Make sure the fan is cleaned with the rest of the system
  • Tell us about a new rattle or whine straight away
  • Keep all filters fitted while cooking

Before we leave, the fan is run and checked. We explain the fault and the fix, and anything else we noticed is pointed out.

Small faults, like a worn belt, are quick to fix. Ignored, they can lead to bigger failures so early attention pays.

The process

Protection comes first: floors, worktops and anything near the work are covered. Then we make the system safe and start. It takes a few hours for most repairs, longer for a full fan replacement, and the area is cleaned down before we leave. For a job in Lewisham, tell us about loading bays, permits, lifts and roof access when you book.

  1. A visit is booked, in the evening or overnight if that suits.
  2. The extract is switched off and the fan opened up.
  3. Bearings, drive, impeller, motor and mounts are inspected.
  4. We explain the options and quote a fixed price.
  5. We complete the work and check the fan runs smoothly.

How to prepare

  • Move anything stored near the system
  • Let us know about parking and loading
  • Have your last certificate or report to hand

Ask for a quote

Photos are the quickest way to a quote: the system from a couple of angles, plus any access panels or hatches. Tell us what kind of site it is and when it’s open, and many jobs can be priced from that alone.

Get a quick quote

Advice

When to call us in Lewisham

Bearings wear out with heat and long hours. As they wear, you hear a whine or a rumble, and if they’re left they can seize.

These are the problems we see most often:

  • A fan that keeps cutting out
  • A fan that won’t start at all
  • A humming noise from the fan motor
  • A fan shaking on its mountings

Holidays are the time to replace a tired kitchen fan at schools such as St Saviour's Catholic Primary School, rather than mid-term.

Questions to ask before booking

  • Whether they recommend a next date
  • Whether inaccessible sections are listed on the report
  • Whether a survey comes first
  • What hours they’ll be on site

Questions to ask before booking

What a clean will not put right

To be straight with you, there are a few things this work will not fix:

  • Ductwork designed too small for the kitchen’s cooking
  • Smells from the discharge that need odour control equipment
  • Wiring and supply faults beyond the fan itself

If in doubt, call 0345 646 2711 or drop us a line and we’ll say what we think before you book.

What we work on in Lewisham

  • Fan housings
  • Fan motors
  • Belts and pulleys
  • Roof and wall fans
  • Kitchen extract fans
  • Bearings

Extract fan repair around Lewisham

Look up Lewisham on the FSA’s food hygiene register and you’ll find about 403 restaurants, cafés and canteens and about 186 takeaways and sandwich shops within roughly a mile and a half of the centre of Lewisham. Those that cook under a canopy rely on a fan that runs every hour they’re open. In London, a fan on a roof or in a basement can take planning to reach, with parking and loading to arrange. Environmental health officers from Lewisham council inspect food businesses in Lewisham. Ventilation is part of food hygiene law, which expects it to be suitable and sufficient. Getting the fan running again is the priority.

Hall kitchens near St Stephen's Church, or anywhere around Lewisham, often use their fans only now and then, and an idle fan can stick. If you run a kitchen close to Lewisham station and the extract fan is getting noisy, a planned repair after closing beats a breakdown at the rush.

Lewisham is about 3 miles west of Eltham, in Greater London. For extract fan repair in and around Lewisham, it’s easy to get a fixed quote: please call 0345 646 2711 or email us. We work across South East England and London, Lewisham included. 764 places in Greater London are on our list, from busy centres to quieter spots.

All of SE13, SE8 and SE6 is covered for extract fan repair, from busy streets to back roads. If you need extract fan repair at premises on Station Road, Lewisham High Street and Lewis Grove or a nearby road, we can help. Lewisham is on the B220, which makes it straightforward for our technicians to reach for extract fan repair. We also cover the places around Lewisham: Ladywell (1 mile south-west), St Johns (1 mile north-west), Hither Green (1 mile south-east), Blackheath (1 mile north-east) and Lee (1 mile south-east). Further out, we also cover London (4 miles north-west), City of Westminster (7 miles north-west), Marylebone (7 miles north-west), Kensington (9 miles west), St Pancras (6 miles north-west) and Shoreditch (5 miles north-west).

Local landmarks in Lewisham

Locally, jobs take us to businesses close to St Joseph's Academy, Ladywell Fields and The Watch House, among other places. There’s a railway station in Lewisham itself: Lewisham station. A little further out are Greenwich Castle (1.2 miles north) and Fan Museum (1.2 miles north). Not far away are Knight's Hill and Brookmill Road Local Nature Reserve.

Map of Lewisham © OpenStreetMap contributors

FAQs for Lewisham

Does London parking affect a job in Lewisham?

A loading bay, a visitor permit or off-street space near the site in Lewisham makes the visit easier to plan. Much of our London work is done overnight, which helps.

Do you work overnight in Lewisham?

Yes, nights and weekends are routine for us. The work in Lewisham can fit around your hours. Just ring 0345 646 2711, or send details by email with your opening times and we’ll plan around them.

What does TR19 mean?

BESA’s ventilation hygiene specification in two main parts: TR19® Grease for kitchen extract systems and TR19® Air for general ventilation. It isn’t law, but it’s the benchmark.

Do you survey before quoting?

Yes, always. We diagnose before we treat: the survey tells us what the system needs and how to reach it and the fixed quote is built on it.

Which records should we keep?

Everything that shows the system is looked after: our reports and pictures, any certificates and your in-house logs. A single log for each site works best.

What happens if you can’t reach some of it?

They’re listed in the report, never skipped quietly. The report says which parts couldn’t be reached and why, along with a quote to put access in.

What happens to the waste?

We take it away at the end of the visit. While we work, it’s kept contained so the area stays clean.

Which sectors do you work in?

Any site with a kitchen or a ventilation system to look after, from a small pub to a hospital. Hotels, schools, care homes, offices, shops and leisure sites are all part of our work.

What the work involves, part by part

Direct-drive fans

Grease on the impeller unbalances a direct-drive fan quickly. Sometimes a clean is all it needs as long as the bearings are still sound.

Impellers and housings

The impeller is the bladed wheel that moves the air. Grease deposits unbalance it and make it shake.

What affects the cost of extract fan repair

Before we fix a price, we need to know a few things. We check:

  • The scale of the work
  • Whether several sites go on one quote
  • Where the site is and how we reach it
  • The condition of the system

What you pay depends on how big the system is, what state it’s in and access to every part of it. You get a fixed price before we start, so there are no surprises.

Helping us quote

A few details help us quote accurately. When you get in touch, it helps to send:

  • How we’d reach plant on a roof or in a plant room
  • The times we could work without disrupting the site
  • Any access panels or hatches you can see
  • Any previous report or certificate

We don’t publish a price list, because every site is different. Instead, we look at your site first, from photos or a survey, then send a fixed quote. To get going, phone us on 0345 646 2711, or send details by email.

BESCA Vent Hygiene EliteMember, cleaning to BESA TR19® Grease
CHAS · SafeContractorISO 9001 and fully insured
Certificate and photo reportWith every clean
24/7 emergency calloutEvenings, nights and weekends
Since 2009South East England and London