Greater London · Ductwork cleaning
Ductwork cleaning in Mill Hill, Greater London
Ductwork cleaning across Mill Hill and nearby, booked around your opening hours and finished with a written report and photos.
- Ductwork that has never been cleaned
- Hardened, baked-on grease in long horizontal runs
- A grease test showing the duct is overdue
What ductwork cleaning looks like in Mill Hill
The Food Standards Agency lists about 19 pubs, bars and clubs as registered food businesses within roughly a mile and a half of the centre of Mill Hill. A pub or hotel kitchen that cooks every day builds up grease in its extract like any other. Night work suits London kitchens, and roads and loading bays tend to be quieter too. It’s Barnet council that sends environmental health officers to food businesses in Mill Hill. 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.
Term dates shape school work: for a school like St Paul's CofE Primary School NW7, an extract clean fits neatly into a half-term or summer break. Where a hall near St Paul's Church, or anywhere in Mill Hill, hosts lunch clubs or events, its extract gathers grease just as a café’s does.
Mill Hill is about 1 mile north-east of Burnt Oak, in Greater London. We carry out ductwork cleaning for businesses, landlords and public buildings in Mill Hill and the rest of Greater London. Mill Hill is one of 764 places in Greater London where we work for ductwork cleaning. For sites nearby, see our London page (10 miles or so).
Our technicians cover all of NW7 and N20 for ductwork cleaning and the streets around it. Whether your site is on Daws Lane, Byron Road and High Street or a nearby road, we can help. We also cover the places around Mill Hill: The Hale (1 mile west), Burnt Oak (1 mile south-west), Grahame Park (1 mile south), Totteridge (2 miles north-east) and Edgware (2 miles west). Within a short drive, we also cover London (10 miles south-east), City of Westminster (8 miles south-east), Marylebone (8 miles south-east), Kensington (8 miles south), St Pancras (8 miles south-east) and Shoreditch (9 miles south-east).
What’s near Mill Hill
Locally, jobs take us to businesses close to Mill Hill School, Copthall School and Bittacy Hill Park. Also close by are Francis Skaryna Belarusian Library and Museum (2 miles east) and Rising Sun pub (0.7 miles north-west). For rail, the closest station is Mill Hill Broadway station, roughly 1 mile south-west of the centre. A little further out are Broadwalk Centre (2 miles west) and Francis Skaryna Belarusian Library and Museum (2 miles east). Open spaces near Mill Hill include The Mill Field and Darland's Lake.
Ductwork cleaning in Mill Hill, done properly
In doctor’s terms, the ductwork is the system’s arteries: find the blockages, clear them, then check the flow is right. Readings taken before and after show the difference, alongside before and after pictures. If you have ductwork that has never been cleaned and an insurer asking for TR19 evidence, we can help.
London kitchens tend to trade late and open early, so work in Mill Hill is normally booked for the night or the early hours. Parking, loading and access to the roof are agreed with the building before the night of the clean.
Our accreditations include CHAS, SafeContractor and ISO 9001, and we are fully insured. We are also a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we have been trading since 2009.
- Location
- Mill Hill (NW7, N20)
- Region
- Greater London
- Paperwork
- Certificate plus before-and-after pictures
- Quotes
- Fixed quote, usually within a working day
- Hours
- Overnight and weekend work, 24/7 emergency callout
- Telephone
- 0345 646 2711
- Page updated
- 30 October 2026
When it’s something else
Before booking, it helps to know what’s not included:
- Undersized or badly laid-out ducts
- A damper stuck open in the duct
- Duct sealed behind fixed ceilings or walls
If you are not sure, just call 0345 646 2711 or use the quote form and we’ll give you a straight answer.
What the work covers
- Multi-storey ducts
- Access panels
- Bends and junctions
- Attenuators
- Vertical risers
- Horizontal duct runs
What we’re called out for in Mill Hill
Slow air leaves the most grease behind. Flat runs, bends, reducers and the base of risers are the usual hotspots, and those are the points we pay most attention to.
Signs it’s time to call us include:
- Stale grease odours from the duct
- Ductwork that has never been cleaned
- Grease pooling at the foot of the riser
- High readings at a recent grease test
Healthcare kitchens, like those at hospitals such as Edgware Community Hospital (about 2 miles south-west), often cook for long hours, which puts them in BESA’s heavier-use bands.
Comparing quotes
- Exactly which parts of the system are covered
- What records you’ll receive afterwards
- Whether VAT is included
- What happens if part of the system can’t be accessed
How the visit works
Protection comes first: floors, worktops and anything near the work are covered. After that, the system is made safe and the work begins. It takes a few hours for a short run, longer for long runs and tall risers, and we clear up before we go. Security desks and permits-to-work are routine in London, so let us know what your building in Mill Hill needs from us.
- First we diagnose: the route, the access and the grease levels.
- You get a fixed price before work starts.
- Each section is cleaned in turn through its access panel.
- We take extra care at bends and at the foot of risers.
- Readings, pictures and a recommended next clean date complete the job.
How to prepare
- Allow time for equipment near the work to be turned off and cool down
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
- Dig out any earlier paperwork for the system
Getting a quote
To help us quote: where the site is, what it is and its opening hours, photos of the system and the last certificate or report, if there is one. Once you have those, call 0345 646 2711, or email photos.
Advice
Why it’s worth doing now in Mill Hill
Booking the duct clean in Mill Hill now keeps it a planned job. The work takes a shift or more, depending on the length of the runs and the number of access points, and we work evenings, overnight and weekends. A building in Mill Hill may have flats or offices above and alongside, and a fault in the system can affect them too.
What you pay reflects the actual work. That is why every job is surveyed first, and why the quote is fixed before work begins.
What you get with us
- Fully insured
- Trading since 2009
- Each visit written up, with pictures
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
Take a look at what affects the cost or how to check a contractor.
Keeping the system healthy
After the visit, a few habits help the work last:
- Don’t switch the extract off early
- Make sure filters are seated properly
- File each certificate and photo report in the maintenance log
- Check readings when the menu changes
The report gives a recommended next clean date, worked out from the grease we found and how long you cook each day, in line with BESA guidance.
Some signs mean the duct needs attention sooner: drips from the ductwork, stale smells or a noisy fan. Testing will show whether any section has reached 500 microns.
Part by part
Attenuators and discharge
Attenuators, where fitted, quieten the extract, and their linings can soak up grease. They’re cleaned where possible and recorded if not.
Horizontal duct runs
A long flat run cannot be cleaned from one end. Where the gaps between panels are too long, we record what couldn’t be reached and can fit extra panels.
How we price ductwork cleaning
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Working hours and out-of-hours timing
- One-off work versus a regular cycle
- The size of the system
- What state the system is in
One small site or a whole estate, the quote is built the same way: what needs doing, how we get to it and when. You will have a fixed price before work begins.
Helping us quote
To speed up the quote, please include:
- When the site is open and when it’s quiet
- The paperwork from the last visit, if you have it
- Close-ups of filters, grilles, hatches or access panels
- The site address and the type of premises
Quotes are quick. Call or email with a few details and you’ll usually have a fixed price within one working day. If we need to see the system first, we book a survey around your hours.
Towns and villages near Mill Hill
What else we do in Mill Hill
Questions from Mill Hill
Do you do school kitchen extract cleaning in Mill Hill in the summer holidays?
Yes. The holidays are the usual time for school work. Food Standards Agency records list about 29 schools, colleges and universities with registered kitchens within about a mile and a half of Mill Hill. Tell us your holiday dates and we will book the visit for when the site is empty.
Who carries out food hygiene inspections in Mill Hill?
That is Barnet council, whose environmental health officers carry out food hygiene inspections in Mill Hill. Have your latest TR19® certificate and photo report to hand, as an officer may ask how the extract is maintained.
Is a quote from photos possible?
Often, yes. Photos of the system and the access, plus your opening hours and last report, are often enough. Larger or hidden systems need a survey on site first.
Can you set up regular visits?
Yes. Tell us what you have and how it’s used and we will propose a schedule with a fixed quote.
What’s TR19?
TR19® is BESA’s specification for ventilation hygiene. TR19® Grease, a standalone specification since 2019, covers grease in kitchen extract systems, while TR19® Air covers other supply and extract ductwork.
What accreditations do you have?
Duct Doctor is 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.
How do you know if the ductwork needs cleaning?
A grease thickness test gives the answer. Using a Wet Film Thickness Test or Deposit Thickness Test, we check the grease at set points. A mean above 200 microns, or 500 microns at any point, means it’s due.
Do you work with multi-site operators?
Yes. Tell us the addresses and what each needs and we’ll quote them together.