Greater London · Kitchen extract cleaning
Harrow on the Hill kitchen extract cleaning
Our technicians work in Harrow on the Hill on kitchen extract cleaning. Out-of-hours visits, a fixed quote and a written report with photos on every job.
- An inspection that picked up a dirty extract
- Grease drips onto cooking equipment
- A smoky, hot kitchen with weak extraction
Between visits
How long the results last depends on use and care. Here’s what we suggest:
- Tell us when the extract starts to drip or smell
- Give the canopy a daily wipe
- Do not let the canopy gutters overflow
- Keep the baffle filters clean
You leave with a date for the next clean, based on your cooking hours and the grease we measured. We can put the system on a 3, 6 or 12-monthly plan, so the date isn’t missed.
Stick to the cleaning interval on the certificate. BESA guidance links the minimum interval to daily cooking hours, so a change in hours may mean a change in interval, and grease readings will show it.
Kitchen extract cleaning in Harrow on the Hill
Many insurers ask for proof that the extract has been cleaned to TR19, and a claim can be refused or reduced without it. For a kitchen in Harrow on the Hill, our certificate and photo report give you that record for the maintenance log. Common call-outs are for heavy grease build-up inside the duct runs and an inspection that picked up a dirty extract, across discharge points, horizontal duct runs and canopies and hoods. Need a TR19 duct cleaning contractor for Harrow on the Hill? We have been cleaning kitchen extracts across the South East since 2009, with a certificate and photo report after every clean.
Access decides how thorough a clean can be. Sections without access panels are recorded on the report, and new panels can be fitted so they’re cleaned next time.
In London, few kitchens can spare a day to close, so work in Harrow on the 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.
We have been trading since 2009, as a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we are fully insured.
- Where
- Harrow on the Hill (HA1, HA0, HA2)
- Region
- Greater London
- Paperwork
- TR19® certificate and photo report
- Quotes
- Fixed quote, typically within a working day
- When we work
- After hours by arrangement; emergencies any time
- Phone
- 0345 646 2711
- Last updated
- 30 October 2026
What a clean will not put right
We’d rather tell you now than book work that won’t help, so these are the things it will not cover:
- A fan motor or bearings that have failed (that needs a fan repair or replacement)
- A canopy that’s too small or a system that was badly designed
- A duct that’s holed or coming apart
Not sure which it is? You can ring 0345 646 2711 or drop us a line and we’ll tell you honestly before booking.
What the work covers
- Plenums and filters
- Canopies and hoods
- Extract fans
- Vertical risers
- Discharge points
- Horizontal duct runs
Common problems we fix in Harrow on the Hill
Grease in the extract matters because it burns. Flames from a pan or grill can be pulled into the canopy by the fan, where burning grease can carry a fire along the ducts and into other parts of the building. For a kitchen in Harrow on the Hill, keeping that fuel under control is part of the fire risk assessment.
Keep an eye out for these warning signs:
- Ductwork thick with old, hardened grease
- A smoky, hot kitchen with weak extraction
- Grease smells coming from the extract
- A new tenancy or takeover with no cleaning history
Bursars and site managers at schools such as St George’s Primary Catholic Voluntary Academy tend to book extract cleaning for when the kitchen is empty.
Before booking anyone
- How VAT is shown on the quote
- If they look at the system before pricing
- Whether they’re fully insured
- What happens if part of the system can’t be accessed
Kitchen extract cleaning in Harrow on the Hill: the local picture
Look up Harrow on the Hill on the FSA’s food hygiene register and you’ll find about 256 cafés, restaurants and staff canteens and about 112 takeaways in Harrow on the Hill and the streets around it, up to about 1.5 miles out. Each one that cooks under a canopy has an extract system that collects grease and needs regular cleaning. In London, kitchens are typically cleaned overnight, when the kitchen is closed and loading is easier. Harrow on the Hill is covered by London Fire Brigade. 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.
Healthcare kitchens can’t easily close, so their extracts are cleaned overnight or between meal services; the nearest hospital to Harrow on the Hill is Clementine Churchill Hospital, about less than half a mile south-east. A kitchen near Sudbury Hill Harrow station that serves breakfast and dinner can run its extract twelve hours or more, which shortens the cleaning interval.
Harrow on the Hill is about 1 mile south-east of Harrow, in Greater London. We provide kitchen extract cleaning for commercial premises of every kind in Harrow on the Hill and the rest of Greater London. Harrow on the Hill is one of 764 places in Greater London we cover for kitchen extract cleaning. Our London page covers sites nearby, about 11 miles away.
Work in HA1, HA0 and HA2 follows the same survey, fixed quote and written report as everywhere else we cover. Whether your site is on New Road, Amery Road and London Road or a nearby road, we can help. Nearby, we also carry out kitchen extract cleaning in Roxeth (1 mile west), Northwick Park (1 mile north-east), South Harrow (1 mile west), Harrow (1 mile north-west) and Sudbury (1 mile south-east). We also work in nearby towns such as London (11 miles south-east), City of Westminster (9 miles south-east), Marylebone (9 miles east), Kensington (7 miles south-east), St Pancras (10 miles east) and Shoreditch (11 miles east).
What’s near Harrow on the Hill
Locally, jobs take us to businesses close to Northwick Park, St Dominic's Sixth Form College and Orley Farm School and the streets around them. Harrow on the Hill’s nearest station is Sudbury Hill Harrow station, about 0.5 miles south of the centre. Other landmarks nearby include Kodak Museum (2 miles north) and Clementine Churchill Hospital (within half a mile south-east). Not far away are Middle Lake and Northala Fields.
Multi-site and managed buildings
We also work for facilities teams across offices, schools and healthcare across Greater London. Work can be phased by floor, building or site around the people who use them.
If you look after several sites, we can plan visits across the whole estate and price them together. Each site gets its own report and photos, so each one has its own record.
What your team can do, and what needs us
When your team notices a problem between visits, like drips, unusual noise, smells or damaged filters, it’s best reported rather than tackled in-house. We can diagnose it and quote.
Your own staff can handle the daily basics: wiping canopies, washing grease filters and recording it in a log. What they can’t safely do is clean inside the ductwork, the fan or the risers, which is where we come in.
Common questions in Harrow on the Hill
Which fire authority looks after Harrow on the Hill?
Harrow on the Hill is in the area of London Fire Brigade. TR19® is not law, but it’s the benchmark many fire officers and insurers look to when they ask how often the extract is cleaned.
Can you work in Harrow on the Hill outside opening hours?
Yes, nights and weekends are routine for us. That way a site in Harrow on the Hill does not have to lose a day’s trading. Tell us your opening hours when you ask for a quote.
Do I have to clean my extract to TR19 by law?
No law names TR19 directly, but the Fire Safety Order 2005 does require the responsible person to manage fire risk. Insurers, fire officers and EHOs look to TR19 as the standard, and many policies require it.
What do you do with what you remove?
Anything we remove is contained as we work and taken away with us, including grease, debris and dirty water. None of it is left on site.
What’s the right cleaning interval for a kitchen extract?
It depends on how many hours a day the kitchen cooks. Heavy use of 12 to 16 hours a day calls for a clean at least every 3 months under BESA guidance, and lighter use less often. Your report gives a recommended next clean date.
Which parts of the extract do you clean?
We clean every part the grease travels through. That means canopy, plenum, filters, ducts, risers, fan and discharge, reached through access panels where necessary.
How do you protect the area?
Protection goes down first: floor sheeting and covers over nearby surfaces and equipment. The area is left tidy, with our waste taken away.
Do you cover Harrow on the Hill?
Yes. Harrow on the Hill is part of the area we cover, as part of our area across London and the South East.
Places near Harrow on the Hill
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How it works
Our technicians bring everything the work needs, including protection sheets, the right tools and access kit. All we need from you is clear access and the right equipment switched off. The visit takes a few hours for a small kitchen, longer for a large system. For a job in Harrow on the Hill, tell us about loading bays, permits, lifts and roof access when you book.
- We survey the system, from your pictures or on site, canopy to discharge.
- We take grease readings at set points and send you a fixed quote.
- On the night, the equipment is off and cool and the kitchen is sheeted.
- Filters, canopy and plenum are cleaned, then the ducts, risers, fan and discharge.
- We re-test, photograph and send your certificate and photo report.
Getting ready for the visit
- Move anything stored near the system
- Dig out any earlier paperwork for the system
- Mention any locked doors, roof access or ceiling voids
Ask for a quote
We don’t publish a price list, because no two systems are the same. Instead, we look at your site first, from photos or a survey, then send a fixed quote. To get going, call us on 0345 646 2711, or email photos.
Read more
Why deal with it now?
If there’s a fire and the extract hasn’t been cleaned, the paperwork becomes the problem. Many policies require cleaning to TR19, and an insurer can refuse or reduce a claim without proof. A certificate in the file answers that question. It’s better booked as a planned job in Harrow on the Hill than handled as an emergency.
One small site or a whole estate, the quote is built the same way: what needs doing, how we get to it and when. The price is fixed before we start.
Why choose Duct Doctor in Harrow on the Hill
- CHAS and SafeContractor accredited, with ISO 9001
- Fixed quotes, usually within one working day
- Ventilation hygiene specialists since 2009
- Full insurance on every job
Take a look at our cost guide or our accreditations.