Greater London · Ductwork cleaning
Ductwork cleaning in Harmondsworth, Greater London
Need ductwork cleaning in Harmondsworth? We diagnose first, fix the price and book the work around your hours, then sign off with a report and pictures.
- Smells of old cooking grease from the ductwork
- A duct clean needed for an insurer
- A grease test showing the duct is overdue
Signs you need ductwork cleaning in Harmondsworth
Slow air leaves the most grease behind. Long horizontal runs, bends, changes in size and the foot of a riser all collect more, and those are the points we pay most attention to.
It’s time to book a visit if you see:
- Grease leaking from duct joints
- High readings at a recent grease test
- Thick crusts of old grease along the duct
- A rancid smell from the extract duct
If you run catering at a healthcare site, such as a hospital like Harlington about 1.4 miles east, the extract may need cleaning more often than a part-time kitchen.
What to look for in a quote
- Whether the work can be done while the site is closed
- What’s included in the scope, part by part
- Whether the figure could change on the day
- If they look at the system before pricing
Ductwork cleaning in Harmondsworth, done properly
Every duct has its own route. Some run a short distance to an outside wall, others climb several floors to the roof. We map the route during the survey and finds every access point before we quote. The work covers multi-storey ducts, vertical risers and attenuators, and common reasons people get in touch are duct runs with no cleaning record and grease leaking from duct joints.
In London, few kitchens can spare a day to close, so work in Harmondsworth 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.
Think of the report as the system’s health record: a dated account with photos of everything we did. Grease extract cleans are also certificated to TR19® Grease through the BESCA VHE portal and sits alongside the report.
- Where
- Harmondsworth (UB7, TW6)
- Wider area
- Greater London
- Records
- Certificate plus before-and-after pictures
- Quotes
- A fixed price before any work starts
- Working hours
- Nights, weekends or holidays to suit you
- Telephone
- 0345 646 2711
- Last updated
- 30 October 2026
Harmondsworth: your questions answered
Do you clean school canteen extracts around Harmondsworth out of term?
Yes. The holidays are the usual time for school work. With about 11 schools and colleges on the FSA’s register within roughly a mile and a half of Harmondsworth, it pays to plan holiday dates ahead. Just call us on 0345 646 2711, or email photos with your term dates and we’ll plan around them.
Can you come to Harmondsworth after we close?
Yes, nights and weekends are routine for us. The work in Harmondsworth can fit around your hours. Just phone us on 0345 646 2711 or send us an email with your opening times and we will plan around them.
Do you have insurance?
Yes. Duct Doctor is fully insured, and the details are available on request.
How long will the duct clean take?
A short duct can be cleaned in a few hours, but long or complex ducts may take several visits. Visits are planned out of hours.
What happens if there are not enough access panels?
Ductwork needs access to be cleaned. Those parts are listed, and we can install panels so they’re reached next time.
Who has the legal duty for fire safety?
It depends on the building. The Fire Safety Order 2005 puts the duty on the responsible person, which can be the employer, the owner, a landlord, an FM or a managing agent.
What’s TR19?
It’s the industry benchmark for cleaning ventilation and kitchen extract systems, written by BESA. It covers how systems are inspected, cleaned and checked, and it takes a risk-based approach.
What accreditations do you have?
CHAS, SafeContractor, ISO 9001 and BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease. We’re fully insured and have been trading since 2009.
Places near Harmondsworth
Also in Harmondsworth
Ductwork cleaning in Harmondsworth: the local picture
According to Food Standards Agency records, there are about 14 pubs, bars and clubs and about 12 hotels and B&Bs across Harmondsworth and its immediate surroundings (about a mile and a half). Any of them serving cooked food has an extract to keep clean, from canopy to discharge. Most London extract cleaning happens at night, after the last service. In Harmondsworth, food businesses are inspected by environmental health officers from Hillingdon council. An officer looking round a kitchen will see the canopy, and grease there is hard to miss. A dated certificate in the maintenance file answers the question before it’s asked.
A hall kitchen that only cooks for events, whether near Church of St Mary or elsewhere in Harmondsworth, still needs its extract cleaned, just less often. Term dates shape school work: for a school like Harmondsworth Primary School, an extract clean fits neatly into a half-term or summer break.
Harmondsworth is about 1 mile south-west of West Drayton, in Greater London. If you need ductwork cleaning in Harmondsworth, it’s easy to get a fixed quote: please call 0345 646 2711, or email photos. We work across South East England and London, Harmondsworth included. Our area takes in 764 places across Greater London, from busy centres to quieter spots. There’s also a page for London, roughly 17 miles from Harmondsworth.
Our technicians cover all of UB7 and TW6 for ductwork cleaning and the roads nearby. Whether your site is on Moor Lane, Hatch Lane and High Street or a nearby road, we can help. If your site is just outside Harmondsworth, we cover Longford (1 mile south-west), Sipson (1 mile north-east), Heathrow (2 miles south-east), Harlington (2 miles east) and Stanwell (2 miles south). Larger places within reach include City of Westminster (14 miles east), Marylebone (14 miles east), Kensington (12 miles east), Hampstead (14 miles east), Ruislip (7 miles north-east) and Brompton (14 miles east).
What’s near Harmondsworth
We work in commercial kitchens and buildings around Harlington Community School and The Five Bells Inn, among other places. The nearest railway station is Heathrow Terminal 5 Rail station, roughly 1 mile south. Other landmarks nearby include British Airways Heritage Collection (3.5 miles north) and Harlington (1.4 miles east). The countryside around Harmondsworth includes Crane Meadows and Staines Reservoirs.
Why it’s worth doing now in Harmondsworth
A dirty duct is something insurers ask about. Many require cleaning to TR19, and they can refuse or reduce a claim without proof. A certificate that covers the ductwork is what they want to see. Planning ahead in Harmondsworth lets you pick a quiet night rather than lose a busy one.
What you pay reflects the actual work. That’s why we survey first, from photos or on site, and why the quote is fixed before any work starts.
Why book with us
- CHAS, SafeContractor and ISO 9001
- A fixed price before any work starts
- Trading since 2009
- One number for every site across the South East and London
See our cost guide or our accreditations.
What affects the quote in Harmondsworth
Your quote is based on your site. We consider:
- The condition we find in the survey
- How easy every part is to reach
- The times the site is available
- How many systems or sites are involved
Every site is different, so we price each one individually. The size of the job, how we reach it, its condition and the working hours all play a part.
Asking for a quote
A few details help us quote accurately. With your enquiry, please include:
- Where the plant sits or the system leaves the building, such as a roof or outside wall
- Any symptoms, from odd noises to smells or leaks
- Where the site is and what kind of site it is
- Any previous report or certificate
Want a quote for ductwork cleaning? Please give us a ring on 0345 646 2711, or send details by email with a few details about the site. We’ll explain what we’d do and send a fixed quote before you commit to anything.
Part by part
Attenuators and discharge
Some systems have attenuators to reduce noise, but they can hold grease in their linings. They’re cleaned where possible and recorded if not.
Horizontal duct runs
The underside of a horizontal duct collects the most grease. Thick deposits are scraped out by hand before degreasing, then the walls and roof are cleaned too.
When something else is needed
We’ll always give you a straight diagnosis, so here’s what ductwork cleaning will not do:
- Undersized or badly laid-out ducts
- Parts of the duct with no way in
- Faulty fire dampers
If in doubt, give us a ring on 0345 646 2711 or send us an email and we will say what we think.
Where we work
- Vertical risers
- Bends and junctions
- Multi-storey ducts
- Horizontal duct runs
- Attenuators
- Access panels
In-house cleaning or a specialist?
A few tasks are always specialist work: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease call for the right kit, training and safe access. That’s our job.
Staff cleaning doesn’t replace a specialist visit; it supports it. Regular in-house cleaning slows the build-up, but the parts you can’t see still need a specialist at the right interval.
What happens on the day
When we arrive, we check the system against the survey or the photos you sent. If anything is different, we talk it through with the person on site before carrying on. After that, the work takes anything from a few hours to several visits, depending on the length of duct. Getting kit into a London building takes planning, so let us know where we can load and park in Harmondsworth.
- First the duct route is traced and every access point noted.
- We measure grease thickness at set points before cleaning.
- Through the access panels, thick grease is removed by hand first.
- Horizontal runs and risers are then degreased by the method that suits the deposit.
- Readings and pictures are repeated and any section we couldn’t reach is recorded.
How to prepare
- Make sure someone can let us in and lock up afterwards
- Find the previous report, if there is one
- Plan for cooking equipment or plant to be off before we arrive
Get a fixed quote
For a fixed quote, call 0345 646 2711, or email photos with the site type, your trading hours and a short description of the system. A few pictures and your last certificate or report help a lot. We normally come back within one working day.