Greater London · Grease filter exchange
Childs Hill grease filter exchange
One call covers a scheduled grease filter exchange, swapping dirty canopy filters for clean ones in Childs Hill, from survey to sign-off. Fully insured, with CHAS, SafeContractor and ISO 9001.
- Weak extraction at the canopy
- Staff short of time to wash filters
- Bent or damaged filters that do not sit properly
How we handle grease filter exchange in Childs Hill
In Childs Hill, our filter exchange runs on a schedule set by how much the kitchen cooks. Busy kitchens need changes more often, lighter ones less. We agree the interval with you at the start. If you’re dealing with grease building up behind the canopy filters and a canopy running with filters missing, we can help, from school and hospital kitchens, island canopies and baffle filters onwards.
London kitchens tend to trade late and open early, so extract cleaning in Childs Hill is usually done overnight, after the last service. Parking, loading and access to the roof are agreed with the building before the night of the clean.
Each visit ends with a written report and photos, so you have a record of what was done and when. Kitchen extract cleaning to TR19® Grease is certificated through the BESCA Vent Hygiene Elite portal.
- Where
- Childs Hill (NW2, NW3, NW11)
- Region
- Greater London
- Records
- Report and pictures after the visit
- Quote
- A fixed quote up front
- Working hours
- Nights, weekends or holidays to suit you
- Telephone
- 0345 646 2711
- Checked
- 30 October 2026
Part by part
School, care home and staff kitchens
A longer exchange interval may suit lighter cooking. The interval is set to fit.
The plenum
A greasy plenum is a sign filters have been left too long or that the next TR19 clean is due.
Common questions in Childs Hill
Who carries out food hygiene inspections in Childs Hill?
The local authority for Childs Hill is Barnet council, and its environmental health team does the inspecting. Have your latest TR19® certificate and photo report to hand, as an officer may ask how the extract is maintained.
Do you clean school canteen extracts around Childs Hill out of term?
Yes, out-of-term visits are normal for schools. The FSA’s register shows about 60 schools and colleges with food registrations within roughly a mile and a half of Childs Hill. Booking early in the term gives the best choice of holiday dates.
Are you fully insured?
Yes, we are fully insured. CHAS and SafeContractor accreditation sit alongside it, for sites that check contractor safety.
What is TR19?
BESA’s ventilation hygiene specification in two main parts: TR19® Grease for kitchen extracts and TR19® Air for supply and extract systems. It is not law, but it’s the benchmark.
Will you tell us when the next visit is due?
Yes. The report recommends when the next visit should be, based on what we found and how the system is used.
Do you work with multi-site operators?
Yes. One number covers all your sites across London and the South East, with visits on a regular schedule.
What happens if you cannot reach some of it?
They’re marked on the report. In ductwork, new access panels are often the answer, and we can fit those.
How far ahead should we book?
Book as early as you can for planned work, especially if the next clean or test is due soon. For emergencies, we take calls 24/7.
In-house cleaning or a specialist?
If your staff spot something between visits, such as dripping grease, a noisy fan, a smell or a filter that will not come clean, they should report it rather than try to fix it. We can diagnose it and quote.
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.
Grease, kitchens and Childs Hill
The FSA’s food hygiene register includes about 35 pubs, bars and clubs and about 17 hotels and guest houses within roughly a mile and a half of the centre of Childs Hill. Wherever they cook, the canopy, duct and fan collect grease just as a restaurant’s do. London jobs normally start after the last service, with loading and roof access agreed with the building first. Food hygiene inspections in Childs Hill are the job of Barnet council’s environmental health team. A greasy canopy or dripping filters are the sort of thing an inspection can pick up. Before-and-after photos from each clean are a simple way to show the extract is in hand.
Kitchens that cook twelve hours or more a day, as some healthcare kitchens do, fall into BESA’s three-monthly minimum; New End Hospital is the nearest hospital to Childs Hill, about 0.9 miles east. A kitchen near Cricklewood station that serves breakfast and dinner can run its extract twelve hours or more, which shortens the cleaning interval.
Childs Hill is about 1 mile north-west of West Hampstead, in Greater London. Every kind of commercial site in Childs Hill, we can take on grease filter exchange. We can work out of hours so the site keeps running. Childs Hill is one of 764 towns, villages and districts in Greater London where we work for commercial clients. Our London page covers sites nearby (6 miles or so).
Here we cover the NW2, NW3 and NW11 postcode area for grease filter exchange. We cover sites on Nant Road, Ridge Road and Garth Road and nearby roads. Close by, we work in Fortune Green (1 mile south), West Hampstead (1 mile south-east), Golders Green (1 mile north), North End (1 mile north-east) and Vale of Health (1 mile east). We also work in nearby towns such as London (6 miles south-east), City of Westminster (4 miles south-east), Marylebone (4 miles south-east), Kensington (4 miles south), St Pancras (4 miles south-east) and Shoreditch (6 miles south-east).
Landmarks near Childs Hill
In Childs Hill, that means kitchens and buildings near St Vedasts School For Boys, Hampstead School and The Old Bull and Bush pub. The closest station to Childs Hill is Cricklewood station, about 0.7 miles south-west of the centre. Well-known places in the area include O2 Centre (1.2 miles south-east) and New End Hospital (0.9 miles east). Not far away are Parliament Hill and Westbere Copse.
Common problems we fix in Childs Hill
Hand-washed filters often come back still greasy. Grease lodges deep in baffles and mesh, and a quick rinse leaves it there.
The symptoms we are asked about most are:
- Damaged filters letting grease past
- Staff short of time to wash filters
- Grease left in baffles after washing
- Filters so greasy the air can barely pass
For schools such as All Saints' CofE Primary School NW2, kitchen extract cleaning is usually booked for the holidays, when the canteen is closed.
Questions to ask before booking
- Their accreditations, such as BESCA Vent Hygiene Elite, CHAS or SafeContractor
- Whether they recommend a next date
- How VAT is shown on the quote
- What insurance they carry
How the visit works
Night work is normal for us. Evenings, nights and weekends are when much of our work happens, so the site can open as normal afterwards. On site, the work takes a few minutes per canopy, longer for a large kitchen with several canopies. Security desks and permits-to-work are routine in London, so let us know what your building in Childs Hill needs from us.
- We record the number, size and type of your filters.
- We set the interval with you.
- On each visit, we remove the greasy filters.
- Clean filters go in and we check they sit snugly.
- The dirty filters leave with us and the next visit is booked.
Preparing for the visit
- Arrange a key holder or contact on site
- Clear loose items from the work area
- Tell us about site rules, permits or sign-in
Getting a quote
Some systems can be priced from photos; others need a survey. Big or complicated sites, and systems that are hard to see in pictures, get a survey first. Either way, you get a fixed price before we start.
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When something else is needed
Not every problem is solved by grease filter exchange, and we’d rather say so up front. It will not put right:
- Grease already built up in the ductwork, which needs a full TR19 clean
- A fan that is failing or too weak for the system
- A canopy that needs a proper clean
If in doubt, call us on 0345 646 2711 or email us and we will say what we think before you book.
Where we work
- Wall canopies
- Baffle filters
- Restaurants and pubs
- Mesh filters
- Island canopies
- School and hospital kitchens
Also near Childs Hill
Also in Childs Hill
What happens if it’s left?
Grease dripping from the canopy is a sign the filters cannot hold any more. Left, it ends up on equipment, food areas and staff and that is the kind of thing inspectors look for. Leaving it on a busy London site only adds to the work.
Leaving it longer rarely makes the work cheaper. Problems in a system tend to grow, and a neglected system can mean more work. If you’re unsure, call 0345 646 2711, or email photos and we’ll give you an honest view and a fixed quote.
Why choose Duct Doctor in Childs Hill
- Ventilation hygiene specialists since 2009
- Member of BESCA Vent Hygiene Elite, cleaning to BESA TR19® Grease
- Full insurance on every job
- Fixed quotes from a survey or pictures
Fixed quotes for grease filter exchange in Childs Hill
There’s no set price list, because sites vary so much. What we look at:
- Working hours and out-of-hours timing
- Whether several sites go on one quote
- Site rules, permits and inductions
- Travel, parking and unloading
When the work has to happen, how we reach it and how big the site is all affect the cost. Each of those is built into the quote, and the price is fixed before any work starts.
Asking for a quote
A few details help us quote accurately. With your enquiry, please include:
- Wide photos of the system and the area around it
- Close-ups of filters, grilles, hatches or access panels
- Where the plant sits or the system leaves the building, such as a roof or outside wall
- The times we could work without disrupting the site
Every quote begins with a look at the system, from your photos and details or, where that is not enough, a survey on site. Then we send a fixed price so you know the cost before work begins.