Greater London · Grease filter exchange
Grease filter exchange in Smithfield, Greater London
One call covers a scheduled grease filter exchange, swapping dirty canopy filters for clean ones in Smithfield, from survey to sign-off. CHAS and SafeContractor accredited, ISO 9001 and fully insured.
- Grease left in baffles after washing
- Damaged filters letting grease past
- Smoke and heat lingering under the hood
How it works
When we arrive, we check the system against the survey or the photos you sent. Anything unexpected is raised with you before we go further. After that, the work takes a short visit, depending on how many filters the canopies hold. Before any visit in Smithfield, we agree where the van can stop and how equipment reaches the system.
- We start by noting how many filters you have and what type they are.
- Together we set how often the filters should be changed.
- Each visit starts with the used filters being removed.
- Clean filters go straight back in, seated properly with no gaps.
- Anything we notice, such as bent filters or a dirty plenum, is pointed out.
Before we arrive
- Clear the space around the work
- Let us know how we reach the system, including roofs, risers and plant rooms
- Let us know about permits to work or site inductions
Ask for a quote
Every quote begins with a look at the system, either from photos and details you send or from a site visit. Then we send a fixed price so you know the cost before work begins.
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Grease filter exchange for kitchens and businesses in Smithfield
Each visit is quick and tidy. The greasy filters come out, clean ones go in, and we check they’re seated with no gaps. Anything that needs attention is pointed out. The work covers baffle filters, wall canopies and mesh filters, and people most often call us about grease collecting in the filter channels and blocked baffle filters.
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. For a kitchen in Smithfield, that typically means a longer system to clean and more access panels to plan around.
Duct Doctor has been trading since 2009, as 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.
- Place
- Smithfield (EC1V, EC1P, EC1R)
- Wider area
- Greater London
- Paperwork
- Report and pictures after the visit
- Quote
- Fixed quote, usually within a working day
- When we work
- Nights, weekends or holidays to suit you
- Telephone
- 0345 646 2711
- Checked
- 30 October 2026

Grease filter exchange around Smithfield
Food Standards Agency records list about 4,705 restaurants, cafés and canteens and about 1,069 takeaways in Smithfield and the streets around it, up to about 1.5 miles out. Clogged filters slow the airflow, and busy kitchens like these clog them fast. The fire and rescue service for Smithfield is London Fire Brigade. Its fire safety officers can audit commercial kitchens, and grease in the extract is part of a kitchen’s fire risk. In Smithfield, food businesses are inspected by environmental health officers from the City of London Corporation. The cleanliness of the kitchen and its equipment, extraction included, is part of what they check. Our report lists what was cleaned and when, which is useful to have ready.
If you run catering at a healthcare site, such as a hospital like Finsbury Health Centre about 0.5 miles north-west, the extract may need cleaning more often than a part-time kitchen. Term dates shape school work: for a school like Charterhouse Square School, an extract clean fits neatly into a half-term or summer break. A hall kitchen that only cooks for events, whether near St Bartholomew-the-Less or elsewhere in Smithfield, still needs its extract cleaned, just less often.
Smithfield is about 1 mile north of London, in Greater London. Whether your site is in the middle of Smithfield or further out, grease filter exchange is available to all kinds of commercial premises, from small sites to large estates. Across Greater London, we cover 764 places, and Smithfield is one of them.
Postcode districts we cover here for grease filter exchange: EC1V, EC1P and EC1R. If you need grease filter exchange at premises on Oat Lane, Shoe Lane and Long Lane or a nearby road, we can help. Main roads around Smithfield include the A1 and A4, so getting to you is simple for grease filter exchange. We also cover the places around Smithfield: Farringdon (1 mile north), Blackfriars (1 mile south), Holborn (1 mile west), Temple Bar (1 mile south-west) and Clerkenwell (1 mile north). Larger places within reach include Kensington (4 miles west), Walthamstow (6 miles north-east), Hampstead (4 miles north-west), Ruislip (14 miles west), Brompton (3 miles south-west) and Stockwell (4 miles south).
What’s near Smithfield
We work in commercial kitchens and buildings around London Nautical School, Barts Health Archives and St Alban's Church of England Primary School, among other places. Nearby too are St Mary-at-Hill (1 mile south-east), Oriole pub (within half a mile south-west) and Postman's Park (under half a mile south-east). Smithfield has its own railway station: Farringdon station. Other landmarks nearby include Montfichet's Tower (less than half a mile south) and Postal Museum (less than half a mile south-east). Open spaces near Smithfield include Ludgate Hill and St. James's Park Lake.
What happens if it’s left?
Filters full of grease are fuel sitting right above the cooking. Flames from the range can be drawn up into the canopy and grease in the duct can carry a fire further. Keeping filters clean takes some of that fuel away. In Smithfield, a planned overnight visit is much easier than closing unexpectedly.
Several systems or sites on one quote can make for a more efficient booking. Mention every system or site you need covered, and you will get one fixed quote.
What you get with us
- We’re fully insured
- In business since 2009
- A single point of contact for sites across the South East and London
- CHAS, SafeContractor and ISO 9001
Take a look at how cleaning jobs are priced or our accreditations.
For landlords and multi-site operators
When the building owner and the occupier are different, the lease normally sets out who maintains what. We are happy to deal with either side, and the report can go to both.
Records are where multi-site compliance often slips. Each visit produces a dated report with pictures, ready to show insurers, fire officers or EHOs.
What grease filter exchange can’t fix
It’s worth knowing the limits before booking:
- A fan that is failing or too weak for the system
- Grease behind the filters that a swap can’t remove
- Smell complaints that need odour control equipment
If in doubt, phone us on 0345 646 2711, or email photos and we’ll say what we think before booking.
What we work on in Smithfield
- Restaurants and pubs
- Baffle filters
- School and hospital kitchens
- Island canopies
- Wall canopies
- Mesh filters
What affects the quote in Smithfield
Before we fix a price, we need to know a few things. We check:
- A single visit or a regular plan
- How easy every part is to reach
- The scale of the work
- The condition we find in the survey
What you pay reflects the actual work. That is why we survey first, from pictures or on site, and why the quote is fixed before work begins.
Helping us quote
To speed up the quote, please include:
- Where the site is and what kind of site it is
- How we’d reach plant on a roof or in a plant room
- Detail shots of panels, filters and grilles
- Wide pictures of the system and the area around it
For grease filter exchange in Smithfield, call us on 0345 646 2711 or drop us a line. Let us know the site type and the opening hours, and send photos or your last report if you can. A fixed quote normally follows within one working day.
Nearby places to Smithfield
Other services in Smithfield
Staff cleaning versus specialist work
Your own staff can handle the daily basics: wiping down canopy surfaces, cleaning filters and keeping a simple log. What they cannot safely do is clean inside the ductwork, the fan or the risers, which is where we come in.
For ventilation and air handling systems, in-house care is mostly about checks: keeping grilles clear, noting unusual noise or smells and logging filter changes. Cleaning inside ducts and units is specialist work.
FAQs for Smithfield
Can you work in Smithfield outside opening hours?
Yes. We work evenings, overnight and at weekends. The work in Smithfield can fit around your hours. Just call 0345 646 2711, or email photos with your opening times and we’ll plan around them.
How do you handle parking and loading in Smithfield?
A loading bay, a visitor permit or off-street space near the site in Smithfield makes the visit easier to plan. Night visits tend to make loading easier on London streets.
Do you have a 24/7 line?
Yes. If something urgent happens, like a fan failing or damage after a fire, call our 24/7 line, and we will advise on what to do next.
How far ahead should we book?
For planned work, earlier is better, particularly if your next visit is nearly due. For emergencies, we take calls 24/7.
Do you deal with bent or broken filters?
A badly damaged filter should be replaced. We’ll tell you which ones and why on the visit.
Do you provide a certificate or report?
Yes, on every job. It’s a dated, written report with pictures, plus a certificate via the BESCA Vent Hygiene Elite portal for TR19® Grease cleans. File it with your fire safety records.
What does grease filter exchange cost?
Every kitchen is different, so we quote once we know your filters and schedule. You get a fixed price before the first visit.
What do you do to protect the area?
We start with protection: floor sheeting and covers over nearby surfaces and equipment. We tidy up and take our waste away before we leave.
Aftercare tips
How long the results last depends on use and care. We suggest:
- Keep filter exchange and TR19 cleaning on the same plan
- Tell us if the menu or opening hours change
- Look out for drips from the canopy
- Keep the canopy clear for exchange visits
We tell you if we spot anything in the canopy that needs attention. That might mean bringing a TR19® clean forward and we can book that in.
Dripping filters are a clear sign they’re full. A clean set straight away cuts the grease in the canopy, and it’s worth checking the plenum too.