Kent · Extract fan cleaning
Extract fan cleaning in Knatts Valley, Kent
Cleaning of kitchen extract fans, impellers, fan housings and discharge points for businesses, landlords and public buildings in Knatts Valley. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.
- A fan left out of previous cleans
- Burning smells from the fan area
- A fan shaking on its mounts
How the visit works
Protection comes first: floors, worktops and anything near the work are covered. Then we make the system safe and start. It takes a couple of hours per fan, depending on its size and the build-up, and the area is cleaned down before we leave. Photos of the system and how to reach it help us plan a visit to Knatts Valley.
- The fan is found and its type, access and isolation checked.
- It’s isolated so it can’t run while we work.
- Grease is scraped off the impeller blades and casing.
- Blades, housing and surrounds are degreased with care around the electrics.
- It’s closed up, run, checked and photographed for the report.
Before we arrive
- Allow time for equipment near the work to be turned off and cool down
- Clear loose items from the work area
- Let us know about permits to work or site inductions
Get a fixed quote
Need a price for extract fan cleaning? Please give us a ring on 0345 646 2711 or drop us a line with a few details about the site. We’ll explain what we’d do and send a fixed quote before you commit to anything.
Related advice
Extract fan cleaning in Knatts Valley, done properly
A clean fan is not a repaired fan. If we find worn bearings, a struggling motor or damage to the impeller, we will tell you and fan repair or replacement is something we also do. You will know whether the fan just needed cleaning or something more. If you have a noisy fan that has got louder over time and thick grease on the impeller and casing, we can put it right, from axial fans, in-line fans and discharge points onwards.
Rural kitchens often have long, low duct runs through a roof space or along an outside wall, and those horizontal sections are where grease settles. We agree access and timings in advance.
Insurers, fire officers and environmental health officers all look at records. So every job comes with a written report and photos, plus a TR19® certificate through the BESCA VHE portal where the work is a TR19® Grease clean.
- Where
- Knatts Valley (TN15)
- Wider area
- Kent
- Paperwork
- Certificate and photo report
- Quotes
- Fixed quote, usually within a working day
- Working hours
- Nights, weekends or holidays to suit you
- Telephone
- 0345 646 2711
- Last updated
- 30 October 2026
When to call us in Knatts Valley
A greasy fan in Knatts Valley is fuel at the end of the duct. A fire in the duct can reach the fan and the grease around it and an overworked motor runs hotter.
Common reasons sites call us include:
- A fan coated in grease inside its housing
- A fan left out of previous cleans
- A noisy fan that has got louder over time
- A fan motor running hot under a coat of grease
Lullingstone Castle, about 2.8 miles north-west, is one of the historic houses near Knatts Valley; if you run event catering at a venue like that, cleans can be booked between functions.
Before you book anyone
- Exactly which parts of the system are covered
- Proof of accreditation you can verify
- Whether the quote is based on a survey or pictures
- Whether they’re fully insured
Between visits
To keep the system working properly between visits:
- Keep access to the fan clear
- Never cook with a filter missing
- Report grease escaping from the fan
- Note any drop in extraction at the canopy
Keep the report with the maintenance log and fire risk assessment. It shows the fan’s condition at the time of the clean, which helps if anything changes later.
The fan stays cleaner when less grease gets past the canopy. Keep the grease filters clean, fitted and in place, and replace any that are damaged.
Nearby places to Knatts Valley
What else we do in Knatts Valley
Honest limits
Before you book, it helps to know what’s not included:
- Wiring faults to the fan
- Grease in the canopy and ductwork
- A failed motor or worn bearings (that needs a fan repair or replacement)
If you’re not sure, just phone us on 0345 646 2711 or use the quote form and we will give you a straight answer before you book.
What we work on in Knatts Valley
- Fan housings
- In-line fans
- Discharge points
- Axial fans
- Roof-mounted fans
- Centrifugal fans
Leave it or put it right?
A greasy fan has to work harder to move the same air. Airflow at the canopy drops and the kitchen gets hotter and smokier, while the motor runs under more strain. Planning a trip to Knatts Valley ahead is easier for everyone than a rushed one.
Combining work into one visit or one programme often makes better use of the time. Tell us about everything you’d like looked at, and you will get one fixed quote.
Why choose Duct Doctor in Knatts Valley
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Trading since 2009
- Every visit written up, with pictures
- Fixed quotes, normally within one working day
Read our cost guide and how to check a contractor.
What the work involves, part by part
Wall fans
A wall fan pushes the air straight outside. We isolate it, then clean the blades and housing.
Impellers and blades
The blades of the impeller do the work, and it collects grease unevenly. That is what unbalances the fan, so it’s cleaned carefully blade by blade.
For landlords and multi-site operators
We also work for facilities teams across offices, schools and healthcare across Kent. Work can be phased by floor, building or site around the people who use them.
Running several sites is easier with one contractor. We work across London and the South East, so visits at different addresses can be planned together and kept to a regular schedule.
Kitchen extracts in Knatts Valley
Food Standards Agency data counts about 4 cafés, restaurants and staff canteens in and around Knatts Valley, up to about a mile and a half out. Any of those kitchens with a canopy relies on a fan that gathers grease as it runs. Kitchens in Knatts Valley get their food hygiene inspections from Sevenoaks council. They look at how clean the premises and equipment are, and the kitchen extract is part of that. Our report lists what was cleaned and when, which is useful to have ready. Knatts Valley sits within the area of Kent Fire and Rescue Service. 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.
Term dates shape school work: for a school like West Kingsdown CofE VC Primary School, an extract clean fits neatly into a half-term or summer break. A hospital like Sevenoaks Hospital, about 3.9 miles south-west, is the kind of site where a kitchen may cook for patients, staff and visitors all day.
Knatts Valley is about 4 miles north-east of Sevenoaks, in Kent. Knatts Valley 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. We cover 922 places across Kent, from busy centres to quieter spots. Maidstone is in our area too, about 13 miles from Knatts Valley.
We work across TN15 for extract fan cleaning and the roads nearby. Extract fan cleaning is available to premises on Knatts Lane and Knatts Valley Road and the roads around them. Other places close to Knatts Valley include East Hill (1 mile north-west), Woodlands (1 mile south), Romney Street (1 mile west), West Kingsdown (1 mile north-east) and Cotman's Ash (1 mile south). Further out, we also cover Maidstone (13 miles east), Dartford (8 miles north), Sevenoaks (4 miles south-west), Royal Tunbridge Wells (14 miles south), Gravesend (9 miles north-east) and Tonbridge (9 miles south).
Landmarks near Knatts Valley
We work in commercial kitchens and buildings around Kemsing Down, among other places. The nearest railway station is Kemsing station, roughly 2.5 miles south. A little further out are Sevenoaks Hospital (3.9 miles south-west) and Kemsing Castle Bank (2 miles south-west).
Common questions in Knatts Valley
Which fire authority looks after Knatts Valley?
Fire safety enforcement in Knatts Valley is handled by Kent Fire and Rescue Service. If a fire safety officer visits a commercial kitchen, they may ask about the fire risk assessment and how the extract is kept clean.
Will you come out to Knatts Valley?
Yes, Knatts Valley is part of our area, however small the site. The journey is planned ahead, so a few details about the route help.
Can you clean the fan on its own?
Yes, we can clean just the fan. That helps when the fan needs attention before the next full clean, but it does not replace a full TR19 clean.
Are you insured?
Yes. Duct Doctor is fully insured, and we can share the details when you need them.
What accreditations do you have?
Our accreditations are CHAS, SafeContractor and ISO 9001, alongside BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease. Vent Hygiene Elite is run by BESCA and independently audited.
Can the work be done while we’re closed?
Yes, and it’s often the best time. The visit is timed for when the area is not in use, such as late evening, overnight or a weekend.
Who is the responsible person?
The law calls them the responsible person. That is generally the employer or the person in control of the premises, and where several people have control, each can have duties. If you’re not sure, check your lease and fire risk assessment.
What about areas you can’t get to?
We record them on the report, with a note of where it is, and we explain what access is needed, such as extra access panels in ductwork.