Greater London · Grease filter exchange
Grease filter exchange in Hampstead, Greater London
Grease filter exchange in Hampstead from ventilation hygiene specialists trading since 2009. Out-of-hours visits and 24/7 emergency callout.
- Drips falling from the filters onto equipment
- Poor airflow through the filters
- Grease left in baffles after washing
Grease filter exchange in Hampstead
In Hampstead, our filter exchange runs on a schedule set by how much the kitchen cooks. The heavier the cooking, the more often filters need changing while a lighter kitchen can go longer. The interval is agreed before the first visit. Typical jobs include grease building up behind the canopy filters and filters that come out of the sink still dirty, across mesh filters, school and hospital kitchens and restaurants and pubs.
In a London area like Hampstead, a kitchen extract often passes through shared space on its way out: a riser, a service void, the floors above. Grease in a duct like that is a fire risk to the whole building, not just the kitchen, so a regular TR19® clean protects everyone in it.
We’re CHAS and SafeContractor accredited, we hold ISO 9001 and we are fully insured. We are also a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, trading since 2009.
- Location
- Hampstead (NW3, NW6, NW11, N2)
- Region
- Greater London
- Records
- Photo report after every visit
- Price
- A fixed quote up front
- When we work
- Evenings, overnight and weekends; 24/7 emergencies
- Phone
- 0345 646 2711
- Reviewed
- 30 October 2026
Common problems we fix in Hampstead
Missing filters are more common than you’d think. A missing filter leaves an open route into the system and on into the ductwork.
Most sites get in touch when they notice one of these:
- Staff short of time to wash filters
- Filters so greasy the air can barely pass
- Filters that come out of the sink still dirty
- Gaps where filters have been removed
If you run a café or takeaway near Finchley Road & Frognal station, early starts and late finishes leave little time to clean, so overnight extract cleaning suits.
Questions to ask before booking
- What insurance they carry
- Whether a survey comes first
- Whether a written report and photos are included
- Whether the whole system is included, or only the parts that are easy to reach
For landlords and multi-site operators
From a single site to a large estate, the standard is the same: the system surveyed, the price fixed, the visit fitted around trading and everything written up afterwards.
When the building owner and the occupier are different, the lease normally sets out who maintains what. We can quote either party and send the paperwork to whoever needs it.
Between visits
Aftercare is simple, and it helps at the next visit:
- Look out for drips from the canopy
- Tell us if the menu or opening hours change
- Keep canopy surfaces wiped down
- Tell us if a filter is bent or damaged
We tell you if we spot anything in the canopy that needs attention. It can be a sign that a full TR19® clean is due, and we can arrange it.
Damaged filters leave gaps in the defence. Replacing them early protects the plenum and ductwork.
What happens on the day
Everything the job needs comes with us, including protection sheets, the right tools and access kit. You only need to give us clear access and switch off what needs to be off. The visit takes well under an hour for most canopies. Security desks and permits-to-work are routine in London, so let us know what your building in Hampstead needs from us.
- The filters in each canopy are measured and counted.
- We set the interval with you.
- On each visit, we remove the greasy filters.
- A clean set is fitted and checked for gaps.
- We take the greasy set away and confirm the next date.
Preparing for the visit
- Let us know when the site is closed or quiet
- Plan for cooking equipment or plant to be off before we arrive
- Mention any locked doors, roof access or ceiling voids
Getting a quote
Need a price for grease filter exchange? Please phone us on 0345 646 2711 or use the quote form and tell us about the site. We will explain what we’d do and send a fixed quote before you commit to anything.
Related advice
What staff can safely do
Keep a record of what your team does. A dated log of in-house cleaning and checks shows an inspector that the system is looked after between visits, alongside our reports.
Some jobs should never be done in-house: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease call for the right kit, training and safe access. Leave those to us.
Hampstead: your questions answered
Can the work in Hampstead be done at night or at weekends?
Yes, we can come after you close and finish before you open. The site is handed back ready to open. Tell us your opening hours when you ask for a quote.
What do you need to know about parking in Hampstead?
London parking can be tight, so details of loading bays and permits help. Where restrictions apply in the day, an evening or overnight visit usually gets round them.
Do you work in Hampstead?
Yes. Our technicians work in Hampstead, within the South East and London area we cover.
Which records should we keep?
Everything that shows the system is looked after: reports, certificates, pictures and your own cleaning or check logs. A single log for each site works best.
Do we need to close while you work?
Not typically. Visits are timed for when the area is closed, such as overnight or at a weekend, so the site can carry on as normal.
How do you keep the site clean during the work?
By covering it before any work starts. The work is kept contained and clean down when we finish.
How much does a filter exchange service cost?
We price it on the number of filters and the visit frequency. Tell us what you have and we’ll come back with a fixed quote quickly.
What does TR19 mean?
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 happens if it’s left?
Clogged filters choke the extract. Heat and fumes hang in the kitchen while the fan strains. Keeping filters clean keeps the extract working properly. Shared walls, risers and roofs mean a problem at one London site seldom stays put.
Kitchens, offices, schools and hospitals are all priced the same way: the size of the job, access, condition and working hours. Call for a fixed quote and we will go through it with you.
Why choose Duct Doctor in Hampstead
- Member of BESCA Vent Hygiene Elite, cleaning to BESA TR19® Grease
- Ventilation hygiene specialists since 2009
- Fixed quotes, normally within one working day
- Evenings, overnight and weekends, plus 24/7 emergency callout
See how cleaning jobs are priced or our accreditations and certificates.
How we price grease filter exchange
Your quote is based on your site. We take into account:
- The size of the system
- Whether we need access equipment or extra panels
- The number of sites or systems
- Where the site is and how we reach it
Several systems or sites on one quote often makes better use of the time. Tell us about everything you’d like looked at, and you’ll get one fixed quote.
What to send for a quote
Before you ask for a quote, gather:
- Your last certificate, test record or report
- The postcode and the type of business
- Any symptoms, from odd noises to smells or leaks
- Where the plant sits or the system leaves the building, such as a roof or outside wall
Photos are the quickest way to a quote: wide shots of the system, close-ups of anything that worries you and how we’d get to it. Add the site type and your opening hours, and many jobs can be priced from that alone.
Places near Hampstead
Also in Hampstead
Grease filter exchange in Hampstead: the local picture
The FSA’s food hygiene register shows about 478 restaurants, cafés and canteens and about 150 takeaways in Hampstead and the streets around it, up to about 1.5 miles out. Where they cook under a canopy, the grease filters are the first line of defence and clog quickly. Hampstead is covered by London Fire Brigade. The Fire Safety Order puts the duty on whoever runs a kitchen to control its fire risk, and a greasy duct is fuel. Kitchens in Hampstead get their food hygiene inspections from Camden 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.
Volunteers running a hall kitchen near St John-at-Hampstead church, or anywhere in Hampstead, may not know when the extract was last cleaned, and a grease test settles it. For schools such as Fitzjohn's Primary School, kitchen extract cleaning is usually booked for the holidays, when the canteen is closed.
Hampstead is about 3 miles north-west of City of Westminster, in Greater London. Every kind of commercial site in Hampstead, grease filter exchange is something we can help with. Visits can be booked for evenings, overnight or weekends so trading is not interrupted. Hampstead is one of 764 towns, villages and districts in Greater London we cover for commercial clients.
Grease filter exchange in NW3, NW6, NW11 and N2 is surveyed, quoted and booked the same way as anywhere else. Grease filter exchange is available to premises on Hampstead High Street, New End Square and The Mount Square and the roads around them. Hampstead sits on or near the A1 and A502, so getting to you is simple for evening and night visits. Close by, we work in Greenhill (1 mile north-east), West Hampstead (1 mile west), Fortune Green (1 mile west), Vale of Health (1 mile north) and South Hampstead (1 mile south). We also work in nearby towns such as London (5 miles south-east), City of Westminster (3 miles south-east), Marylebone (3 miles south-east), Kensington (4 miles south), St Pancras (3 miles south-east) and Shoreditch (5 miles south-east). Being one of Greater London’s larger places, Hampstead has a wide mix of commercial premises, all within our area for grease filter exchange.
What’s near Hampstead
In Hampstead, that means kitchens and buildings near South Hampstead High School, Kilburn Grange Park and St Anthony's Preparatory School and the streets around them. Other local landmarks include King William IV Public House (under half a mile north-east) and Cecil Sharp House (1.7 miles south-east). There’s a railway station in Hampstead itself: Finchley Road & Frognal station. Nearby you will also find Isokon Gallery (0.8 miles east) and New End Hospital (less than half a mile north). For a walk, there’s Belsize Wood and The Long Water.