Greater London · Ductwork cleaning
Ductwork Cleaning in Barnet
We cover Barnet for cleaning of kitchen extract ductwork, horizontal runs and vertical risers through access panels. Fixed quotes, work around your opening hours and photo reports as standard.
- Smells of old cooking grease from the ductwork
- Thick crusts of old grease along the duct
- Duct runs with no cleaning record
How we handle ductwork cleaning in Barnet
Duct Doctor has cleaned kitchen extract ductwork since 2009, working across London and the South East. As a BESCA Vent Hygiene Elite member, our duct cleaning is done to BESA TR19® Grease, and our certificates are issued through the BESCA Vent Hygiene Elite portal. Typical jobs include smells of old cooking grease from the ductwork and duct runs with no cleaning record, across multi-storey ducts, bends and junctions and vertical risers.
London kitchens are often tucked into basements or the back of a building, and the duct may run up through several floors before it discharges at the roof. In Barnet, as elsewhere in the capital, a long duct run means more access points to open and more grease to remove.
We’ve been trading since 2009, and we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. CHAS, SafeContractor and ISO 9001 are in place too, and we carry full insurance.
- Where
- Barnet (EN5, EN4, N20, N11)
- Region
- Greater London
- Reporting
- Certificate plus before-and-after pictures
- Price
- A fixed price before we start
- When we work
- Nights, weekends or holidays to suit you
- Telephone
- 0345 646 2711
- Last updated
- 30 October 2026
When something else is needed
Some problems need a different service or another trade:
- Ductwork that is corroded, split or holed (that needs a ductwork contractor)
- Faulty fire dampers
- Ductwork that was poorly designed
Not sure which it is? You can ring 0345 646 2711 or drop us a line and we’ll tell you honestly before you book.
Parts of the system we cover
- Access panels
- Multi-storey ducts
- Vertical risers
- Attenuators
- Horizontal duct runs
- Bends and junctions
Other services in Barnet
What happens on the day
We are used to working while the site is closed. Evenings, nights and weekends are when much of our work happens, so a kitchen or building can carry on as usual the next day. On site, the work takes from a few hours to more than one visit, depending on duct length and access. Managed blocks in London often need contractors booked in ahead, and we are happy to deal with the agent directly for a site in Barnet.
- We map the duct route and check where the access panels are.
- Set points along the runs are tested for grease.
- Access panels are opened and heavy deposits scraped out by hand.
- The duct is degreased with the method that suits the grease, from degreasers to hot water or steam.
- Post-clean readings and pictures go into the report, with any unreachable section listed.
Getting ready for the visit
- Dig out any earlier paperwork for the system
- Make sure equipment near the work can be switched off and left to cool
- Let us know how we reach the system, including roofs, risers and plant rooms
How to get a quote
Photos are the quickest way to a quote: wide shots of the system, close-ups of anything that worries you and how we’d get to it. Tell us what kind of site it is and when it’s open, and we can price many jobs without a visit.
Related advice
Ductwork cleaning in Barnet: the local picture
Look up Barnet on the FSA’s food hygiene register and you will find about 109 restaurants, cafés and canteens and about 43 takeaways and sandwich shops in Barnet and the streets around it, up to about 1.5 miles out. Each kitchen that cooks under a canopy sends grease-laden air into a duct, where it cools and settles. In Barnet, food businesses are inspected by environmental health officers from Barnet council. They look at how clean the premises and equipment are, and the kitchen extract is part of that. Keeping each certificate and photo report on file helps show the extract is looked after. The fire and rescue service for Barnet is London Fire Brigade. Grease in a kitchen extract is a recognised fire risk, and the fire authority enforces the law on managing it in most commercial premises.
If you cook for passing trade around New Barnet station, the extract can be cleaned between your last and first customer. If you look after a school kitchen, at a school such as Grasvenor Avenue Infant School or anywhere near Barnet, the holidays are the usual time for a TR19® clean.
Barnet is about 9 miles east of Watford, in Greater London. Whatever kind of site you run in Barnet, we can take on ductwork cleaning. Visits can be booked for evenings, overnight or weekends so the site keeps running. Barnet is one of 764 towns, villages and districts in Greater London we cover for ductwork cleaning. For sites nearby, see our London page (11 miles or so).
Here we cover the EN5, EN4, N20 and N11 postcode area for ductwork cleaning. Ductwork cleaning is available to premises on Station Road, High Street and Sambroke Square and the roads around them. Barnet sits on or near the B193 and A1081, which makes travel easy for evening and night visits. Neighbouring places we cover for ductwork cleaning include Underhill (1 mile west), New Barnet (1 mile east), Monken Hadley (1 mile north-west), Hadley Wood (1 mile north-east) and Cockfosters (1 mile east). Within a short drive, we also cover London (11 miles south), City of Westminster (9 miles south), Marylebone (9 miles south), Kensington (10 miles south), St Pancras (9 miles south) and Shoreditch (10 miles south-east).
Local landmarks in Barnet
Typical jobs here are in premises near Queen Elizabeth's Girls' School, The Railway Tavern and Highlands Gardens. Barnet’s nearest station is New Barnet station, about 0.6 miles east. Other landmarks nearby include Barnet General Hospital (1.2 miles west) and Francis Skaryna Belarusian Library and Museum (2.1 miles south). Not far away are Darland's Lake and Greenhill Gardens.
In-house cleaning or a specialist?
Logging matters as much as cleaning. A simple log of filter washes, wipe-downs and checks helps show that the system is managed between specialist visits, alongside our reports.
Staff cleaning and specialist work aren’t the same thing. Wiping filters daily and washing them weekly keeps the visible parts in order, but grease that has passed the filters is out of reach. That part needs specialist access and equipment.
Questions from Barnet
Which environmental health team covers Barnet?
That is Barnet council, whose environmental health officers carry out food hygiene inspections in Barnet. An officer may look up into the canopy, so clean filters on the day and a recent certificate on file both help.
Do you work overnight in Barnet?
Yes, out-of-hours work is a big part of what we do. It means the site in Barnet keeps running as normal. Let us know the hours you are closed and we will book within them.
Are you fully insured?
Yes, we are fully insured. CHAS and SafeContractor accreditation sit alongside it for clients who vet their contractors.
What do you need from me for a quote?
The site address, the type of premises and your opening hours, plus pictures of the system and your last certificate or report if you have one.
Do you have a 24/7 line?
Yes, day and night, every day of the year. Our office is open from 8am to 6pm on weekdays, with the emergency line covering every other hour.
Which sectors do you work in?
Commercial premises of every kind: kitchens, offices, schools, healthcare, retail, leisure and food production. Work is timed around how each site runs.
Do you work in Barnet?
Yes. We work across Greater London, Surrey, Kent, Sussex, Hampshire, the Isle of Wight, Berkshire, Buckinghamshire, Oxfordshire, Hertfordshire and Essex, Barnet included.
How do you clean inside the ductwork?
After a survey and grease readings, the duct is opened up through its access panels. We clean the runs and risers section by section, and test again when we’re done.
Multi-site and managed buildings
The Fire Safety Order 2005 puts the duty to manage fire risk on the responsible person, which may be the employer, owner, landlord, FM or managing agent. Where responsibility is shared, records matter even more.
We work for landlords, managing agents and facilities managers as well as the people running the site. Shared systems, like a riser serving several units, need a clear agreement on who books the work, and we can quote for the whole system.
When to call us in Barnet
Wherever the kitchen is, in Barnet or elsewhere, the duct fills in the same way: daily cooking hours, the menu and the state of the filters. Under BESA guidance, the minimum interval is 3, 6 or 12 months, by daily cooking hours.
These are the problems we see most often:
- Hardened, baked-on grease in long horizontal runs
- Grease leaking from duct joints
- Thick deposits at the bottom of a vertical duct
- Proof of duct cleaning for the insurer
Healthcare kitchens cannot easily close, so their extracts are cleaned overnight or between meal services; the nearest hospital to Barnet is Barnet General Hospital, about 1.2 miles west.
What your quote should include
- What happens if part of the system can’t be accessed
- How VAT is shown on the quote
- Proof of accreditation you can verify
- When the next visit should be, and why
Different parts, different methods
Bends and transitions
A bend can hold far more grease than a straight run of the same length. We clean it back by hand and with degreaser, and test it before and after.
Multi-storey and shared buildings
Long ducts in larger buildings can mean several visits. Visits are planned around the building’s hours, out of hours where possible.
Fixed quotes for ductwork cleaning in Barnet
The survey tells us what the work involves. The main factors are:
- The times the site is available
- The size of the system
- What state the system is in
- Whether several sites go on one quote
The cost depends on how big the system is, what state it’s in and access to every part of it. We give you a fixed price before we start, so there are no surprises.
Asking for a quote
When you contact us, these details help:
- The site address and the type of premises
- Your last certificate, test record or report
- Any symptoms, from odd noises to smells or leaks
- Wide pictures of the system and the area around it
Quoting starts with a diagnosis, from your photos and details or, where that isn’t enough, a survey on site. After that, you get a fixed price for the work so you know the cost before work begins.