Kent · Extract fan repair and replacement

Extractor fan repair in Knockholt

Extract fan repair and replacement for businesses, landlords and public buildings in Knockholt. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.

  • An extract fan that rattles or knocks
  • A failed fan that needs a replacement
  • A fan that keeps cutting out

Extract fan repair near Knockholt

Signs you need extract fan repair in Knockholt

When filters clog and ducts fill with grease, the fan has to strain. A motor that strains runs hot, trips out or eventually burns out.

Most sites get in touch when they notice something like this:

  • A fan that whines, hums or grinds
  • A squealing belt on start-up
  • An old fan that needs replacing
  • An extract fan that has stopped working

If you run a church or community hall kitchen, near St Katharine's Church or elsewhere in Knockholt, an extract fan that rarely runs can seize or fail when it’s needed.

Before you book anyone

  • Whether the whole system is included, or only the parts that are easy to reach
  • What hours they’ll be on site
  • What paperwork you get at the end
  • How they set the interval to the next visit

How to choose an extract cleaning contractor

How we handle extract fan repair in Knockholt

Everything a kitchen extract does depends on the fan. When it starts to rattle, hum or slow down, the kitchen gets hot and smoky very quickly. We find out why and put it right, by repairing the fan or replacing it. If you have a failed fan that needs a replacement and a squealing belt on start-up, we can put it right, from bearings, roof and wall fans and kitchen extract fans onwards.

For a fan repair in or near Knockholt, the more you tell us about the fan, the better the first visit: a photo of the fan, the details on its label and the access arrangements help us plan.

The paperwork matters as much as the work. You get a written report with photos after every visit, covering the work done, any areas we couldn’t access and a recommended next date. File it in your maintenance log so it’s ready for an insurer, fire officer or EHO.

Five Duct Doctor technicians in navy uniforms with the company vans
Place
Knockholt (TN14)
Region
Kent
Reporting
Report and photos after the visit
Quotes
A fixed quote up front
Working hours
Nights, weekends or holidays to suit you
Phone
0345 646 2711
Checked
30 October 2026

When a fan fails in Knockholt

Food hygiene inspections in Knockholt are the job of Sevenoaks council’s environmental health team. Food hygiene rules expect food premises to have suitable and sufficient ventilation. That makes a fan repair urgent rather than something to put off. Knockholt is about 16 miles from central London, well within the area we cover across London and the South East. We work evenings, overnight and at weekends, so the visit fits around the site.

Kitchens in Knockholt can call our 24/7 emergency line whenever an extract fan stops.

Knockholt is about 4 miles north-west of Sevenoaks, in Kent. Whatever kind of site you run in Knockholt, extract fan repair is something we can help with. Visits can be booked for evenings, overnight or weekends so trading isn’t interrupted. Across Kent, we cover 922 places, Knockholt among them. There’s also a page for London, roughly 16 miles from Knockholt.

We cover every part of TN14 for extract fan repair and the roads nearby. Extract fan repair is available to premises on Main Road and Blueberry Lane and nearby roads. Other places close to Knockholt include Knockholt Pound (1 mile north-east), Halstead (2 miles north-east), Sepham Heath (2 miles north-east), Pratt's Bottom (2 miles north) and Twitton (3 miles east). We also work in nearby towns such as Dartford (11 miles north-east), Sevenoaks (4 miles south-east), Royal Tunbridge Wells (14 miles south-east), Gravesend (14 miles north-east), Tonbridge (11 miles south-east) and Northfleet (13 miles north-east).

Local landmarks in Knockholt

Typical jobs here are in premises near The Three Horseshoes pub. Knockholt’s nearest station is Knockholt station, roughly 2.7 miles north-east. Other landmarks nearby include Orpington Hospital (3.6 miles north) and Otford Heritage Centre (3.9 miles east). For a walk, there’s Betsom's Hill and Downe Bank.

Map of Knockholt © OpenStreetMap contributors

What we do, step by step

A visit follows the same order every time: sheeting and protection first, make the system safe, do the work, clear away and leave you the report. The visit itself takes part of a day for most faults, with a return visit if parts have to be ordered. A quick note on how to find the site and where to park makes a visit to Knockholt run smoothly.

  1. We start with the symptoms, such as rattling, humming, slow running or a fan that won’t start.
  2. With the fan safely isolated, we open it up for a proper look.
  3. The impeller, bearings, belts or drive, motor and mounts are all inspected.
  4. We explain the fault and give you a fixed price for the fix.
  5. We fix or replace the fan, then test it running before we leave.

Getting ready for the visit

  • Clear loose items from the work area
  • Let us know about permits to work or site inductions
  • Let us know how we reach the system, including roofs, risers and plant rooms

Ask for a quote

There’s no standard price list, because every site is different. We look at your system first, from pictures or on a visit, and then send you a fixed quote. To get going, give us a ring on 0345 646 2711 or send us an email.

Ask for a quote

Related advice

Different parts, different methods

Belt-driven fans

Belt-driven fans have a motor that turns the impeller through belts and pulleys. Worn belts squeal and slow the fan down, and pulleys and bearings need checking too.

Direct-drive fans

In a direct-drive fan, the impeller sits on the motor shaft. There are no belts, so faults tend to be in the motor, bearings or impeller.

Common questions in Knockholt

Who carries out food hygiene inspections in Knockholt?

Kitchens in Knockholt are inspected by Sevenoaks council’s environmental health officers. Inspections are risk-based, so a visit can come at any time, including the week a fan stops.

Can you get to a site in Knockholt?

Yes, smaller places are covered as well as towns. The journey is planned ahead, so a few details about the route help.

What do you do with what you remove?

It’s contained and taken away. We collect grease, debris and waste water as we go rather than letting it spread.

Can you look after several sites?

Yes. Send the list of sites and the work at each and we’ll quote them together.

What is TR19?

A BESA specification, with two parts that matter most here: TR19® Grease for kitchen extracts and TR19® Air for supply and extract systems. It is not law, but it’s the benchmark.

Does a faulty extract fan always need replacing?

In many cases, yes. Many faults are fixed by cleaning the impeller or renewing worn parts and we only recommend replacement when repair does not make sense.

Which kinds of sites do you work on?

We work for restaurants, pubs, hotels, schools, colleges, hospitals, care homes, offices and shops, as well as food production and leisure sites.

What paperwork should we keep on file?

Visit reports, certificates and your in-house cleaning logs. Insurers, fire officers and EHOs may all ask to see them, so keep them together and easy to find.

What a clean won’t put right

We will always give you a straight diagnosis, so here’s what extract fan repair will not do:

  • Smells from the discharge that need odour control equipment
  • Problems with the electrical supply to the fan (an electrician’s job)
  • A greasy canopy and duct that a fan repair won’t touch

If in doubt, phone us on 0345 646 2711 or email us and we will say what we think before you book.

What the work covers

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

How we price extract fan repair

There’s no set price list, because no two systems are the same. What we look at:

  • When the work can happen, such as evenings, overnight or weekends
  • Whether several sites go on one quote
  • Access, including roofs, risers and ceiling voids
  • What state the system is in

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

Helping us quote

You don’t need the technical terms. It helps if you can send:

  • The roof, plant room or outside wall the system runs to
  • Where the site is and what kind of site it is
  • Any symptoms, from odd noises to smells or leaks
  • When the site is open and when it’s quiet

For a fixed quote, give us a ring on 0345 646 2711 or email us and tell us the type of site, your opening hours and roughly what the system looks like. Photos and the last report, if you have one, make the quote quicker. We usually come back within one working day.

Leave it or put it right?

Some kitchens run a noisy fan on a lower speed to cut the noise. That reduces extraction without fixing anything, and the fault carries on developing. A proper diagnosis in Knockholt gets to the real cause. In a small place like Knockholt, a system that fails can take a site out of use.

One small site or a whole estate, we price it on the same basis: what needs doing, how we get to it and when. The price is fixed before any work starts.

What you get with us

  • Ventilation hygiene specialists since 2009
  • One number for every site across the South East and London
  • Member of BESCA Vent Hygiene Elite, cleaning to BESA TR19® Grease
  • CHAS, SafeContractor and ISO 9001

Take a look at how cleaning jobs are priced and our accreditations and certificates.

Multi-site and managed buildings

When the building owner and the occupier are different, the lease normally sets out who maintains what. We can quote either party and send the paperwork to whoever needs it.

We also work for facilities teams across offices, schools and healthcare across Kent. Work can be phased by floor, building or site to keep disruption down.

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