Greater London · Extract fan cleaning
Pratt's Bottom extract fan cleaning
Cleaning of kitchen extract fans, impellers, fan housings and discharge points for businesses, landlords and public buildings in Pratt's Bottom. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.
- A fan motor running hot under a coat of grease
- Less air being pulled from the kitchen
- Fat spreading onto the roof or wall by the fan
Extract fan cleaning in Pratt's Bottom
Not all extract fans are the same: fans on the roof, fans built into the duct run, and fans on an outside wall. Each is isolated and opened in its own way and the survey shows us how to reach it. If you’re dealing with burning smells from the fan area and grease escaping from the fan outlet, we can help.
In a London area like Pratt's Bottom, a kitchen extract often passes through shared space on its way out: a riser, a service void, the floors above. Grease in a duct like that is a fire risk to the whole building, not just the kitchen, which is why keeping it clean to TR19® matters.
For insurers and inspectors, the record counts. That’s why every job is written up in a report with photos, and grease extract cleans come with a TR19® certificate issued through the BESCA Vent Hygiene Elite portal.
- Location
- Pratt's Bottom (BR6, TN14)
- Region
- Greater London
- Paperwork
- TR19® certificate and photo report
- Quotes
- Fixed quote, typically within a working day
- When we work
- Nights, weekends or holidays to suit you
- Telephone
- 0345 646 2711
- Last updated
- 30 October 2026
What a clean won’t put right
A few issues sit outside what this work can do:
- A motor that has burnt out
- Electrical faults in the fan’s supply or controls (an electrician’s job)
- An impeller that is bent or split
If you’re not sure, just give us a ring on 0345 646 2711 or drop us a line and we will give you a straight answer before you book.
What we work on in Pratt's Bottom
- In-line fans
- Roof-mounted fans
- Discharge points
- Centrifugal fans
- Axial fans
- Fan housings
The process
We turn up 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 we start, and floors and nearby surfaces are sheeted. On site, it takes an hour or two for one fan, longer when it’s hard to reach. In Pratt's Bottom, as across London, we typically work overnight or at weekends and hand the site back ready to open.
- We locate the fan and plan how to reach and isolate it.
- It’s isolated so it cannot run while we work.
- We scrape the heavy grease from the blades and housing.
- The fan is degreased, taking care around the motor.
- We reassemble, run and photograph the fan.
Preparing for the visit
- Have your last certificate or report to hand
- Mention any locked doors, roof access or ceiling voids
- Make sure equipment near the work can be switched off and left to cool
Ask for a quote
We do not 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 start, call us on 0345 646 2711, or send details by email.
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When to call us in Pratt's Bottom
Grease on a fan is a fire risk, in Pratt's Bottom as anywhere. If grease in the duct catches, the fan and its housing can feed the fire and an overworked motor runs hotter.
What we are most often called out for:
- A smell of hot grease from the extract
- Grease stains around the discharge
- Grease around the motor and its mounts
- A fan left out of previous cleans
If you cook for passing trade around Knockholt station, the extract can be cleaned between your last and first customer.
Questions to ask before you book
- Whether the quote shows VAT
- What records you’ll receive afterwards
- When they can work, and whether that is outside your opening hours
- Exactly which parts of the system are covered
What the work involves, part by part
Fan housings and motors
We clean around the motor without soaking its electrics, and the fan is isolated throughout. Grease on and around the motor can trap heat, so the surrounding area is cleaned carefully.
Wall fans
Wall fans often have a short duct, so grease reaches them quickly. They may need cleaning as often as the canopy, which grease readings will show.
Common questions in Pratt's Bottom
Who enforces fire safety at workplaces in Pratt's Bottom?
Fire safety enforcement in Pratt's Bottom is handled by London Fire Brigade. It’s worth keeping your fire risk assessment, TR19® certificates and photo reports together, ready to show.
Do you clean school canteen extracts around Pratt's Bottom out of term?
Yes. Half-terms and the summer break are the natural time for school work. There are about 3 schools, colleges and universities on the FSA’s food hygiene register within about 1.5 miles of Pratt's Bottom. Send us your term dates when you ring 0345 646 2711 or email us, and we’ll fit the work in.
Is the fan isolated during cleaning?
It has to be off and isolated, for safety. We clean out of hours, in the evening, overnight or at weekends, so cooking is not affected.
What makes a kitchen extract fan vibrate?
A common cause is grease. Grease collects unevenly and unbalances the impeller, causing vibration and noise. Cleaning may sort it, but worn bearings or a failing motor need a repair.
How far ahead should we book?
Earlier is better, especially for out-of-hours work. Quotes usually come back within one working day, and there’s a 24/7 line for emergencies.
What if the fan needs more than a clean?
Anything beyond cleaning is flagged, with what we found. We can repair or replace it, and there’s a 24/7 emergency callout for breakdowns.
Are you accredited?
Duct Doctor is a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we carry full insurance.
Are you insured?
Yes, we’re fully insured. CHAS and SafeContractor accreditation sit alongside it for clients who vet their contractors.
What your team can do, and what needs us
For ventilation and air handling systems, in-house care is mostly about checks: clear grilles, a log of filter changes and reporting anything odd. Cleaning inside ducts and units is specialist work.
Day-to-day cleaning is something your team can do: wiping down canopy surfaces, cleaning filters and keeping a simple log. What they can’t safely do is clean inside the ductwork, the fan or the risers, and that’s where we come in.
For landlords and multi-site operators
Whether it’s one building or many, the standard is the same: a survey first, a fixed quote, the work timed around the site and a report with photos.
Running several sites is easier with one contractor. We cover South East England and London, so a run of sites can go into one programme and kept to a regular schedule.
Places near Pratt's Bottom
What else we do in Pratt's Bottom
What affects the quote in Pratt's Bottom
Your quote is based on your site. We consider:
- When the work can happen, such as evenings, overnight or weekends
- The condition of the system
- Parking and loading at the site
- The number of sites or systems
What you pay reflects the actual work. That is why every job is surveyed first, and why the quote is fixed before we start.
What to send for a quote
Many jobs can be priced from pictures and some basics. Send what you can of the following:
- How we’d reach plant on a roof or in a plant room
- Your opening hours and when the area is out of use
- The site address and the type of premises
- Any previous report or certificate
Want a quote for extract fan cleaning? Please ring 0345 646 2711, or send details by email with a few details about the site. We will talk you through the work and give you a fixed quote before you commit to anything.
Kitchen extracts in Pratt's Bottom
There are about 8 restaurants, cafés and canteens and about 8 sandwich bars and takeaways across Pratt's Bottom and its immediate surroundings (about a mile and a half), according to the Food Standards Agency’s register. The fan at the end of each of those extracts collects grease that slows it and wears the motor. London jobs usually start after the last service, with loading and roof access agreed with the building first. London Fire Brigade covers Pratt's Bottom. Fire and rescue authorities enforce the Fire Safety Order in most non-domestic premises, and in a kitchen that fire risk includes the grease in the extract.
A hall kitchen that only cooks for events, whether near All Souls' Church or elsewhere in Pratt's Bottom, still needs its extract cleaned, just less often. Term dates shape school work: for a school like Pratts Bottom Primary School, an extract clean fits neatly into a half-term or summer break.
Pratt's Bottom is about 3 miles south of Orpington, in Greater London. For extract fan cleaning in and around Pratt's Bottom, please give us a ring on 0345 646 2711, or email photos for a fixed quote. Our area covers London and the South East, including Pratt's Bottom. Across Greater London, we cover 764 places, Pratt's Bottom among them. There’s also a page for London, about 14 miles away.
All of BR6 and TN14 is covered for extract fan cleaning, from the main roads to the quietest streets. You will find streets such as Orchard Road, Runciman Close and Downs View Close, all of which we cover for extract fan cleaning. Close by, we work in Halstead (1 mile south-east), Chelsfield (1 mile north-east), Bopeep (1 mile north-east), Badgers Mount (1 mile east) and Maypole (1 mile north-east). Larger places within reach include London (14 miles north-west), Shoreditch (15 miles north-west), Whitechapel (14 miles north-west), Stockwell (13 miles north-west), Orpington (3 miles north) and Wimbledon (15 miles west).
Around Pratt's Bottom
Around Pratt's Bottom, our work takes us to kitchens and buildings near Hewitt's Chalk Bank and Green Street Green Primary School and the streets around them. For rail, the closest station is Knockholt station, about 0.8 miles east. A little further out are Crofton Roman Villa (2.4 miles north-west) and Lullingstone Castle (3.8 miles east). Not far away are Betsom's Hill and Downe Bank Nature Reserve.