Hertfordshire · Grease filter exchange
Grease Filter Exchange in South Mimms
Grease filter exchange for South Mimms, with a survey first and a report with photos at the end. Ask us for a fixed quote.
- Bent or damaged filters that do not sit properly
- Blocked baffle filters
- Filter washing that keeps being missed
How we handle grease filter exchange in South Mimms
Across South Mimms, our filter exchange suits restaurants, pubs, cafés, schools, care homes and other kitchens, whether there’s one canopy or many. We can come before or after service so nobody has to stop cooking. The work covers school and hospital kitchens, island canopies and restaurants and pubs, and people most often call us about missing filters in the filter bank and a canopy that drips grease.
In a village or hamlet like South Mimms, the kitchens that need extract cleaning are normally a pub, a school, a care home or a hall kitchen, wherever there is one. Every one of them still needs its extract kept clear of grease.
We’ve been trading since 2009, and we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. CHAS, SafeContractor and ISO 9001 are in place too, and we are fully insured.
- Where
- South Mimms (EN6)
- Wider area
- Hertfordshire
- Paperwork
- Photo report after every visit
- Price
- Fixed quote, typically within a working day
- Hours
- After hours by arrangement; emergencies any time
- Telephone
- 0345 646 2711
- Reviewed
- 30 October 2026
When something else is needed
An honest diagnosis matters more to us than a booking, so here’s what this work cannot put right:
- Grease behind the filters that a swap cannot remove
- An extract that was undersized from the start
- Odours from the discharge that filters won’t stop
If you are not sure, just give us a ring on 0345 646 2711 or email us and we will give you a straight answer.
What we work on in South Mimms
- School and hospital kitchens
- Mesh filters
- Restaurants and pubs
- Wall canopies
- Island canopies
- Baffle filters
Common questions in South Mimms
Will you come out to South Mimms?
Yes, smaller places are covered as well as towns. Just mention lanes, gates or anything else about the site when you book.
Can school kitchens in South Mimms be cleaned in the holidays?
Yes, and it’s the easiest time to do it. Food Standards Agency records list about 4 schools, colleges and universities with registered kitchens within about a mile and a half of South Mimms. Booking early in the term gives the best choice of holiday dates.
Will you tell us when the next visit is due?
Yes. The report recommends when the next visit should be, based on use and what we found.
Do you look at the system first?
Yes. We always survey first, either from photos and details you send or on a site visit. A fixed quote follows.
Will I get paperwork for my records?
Yes. Each visit ends with a written report and pictures, showing what was done, anything we couldn’t reach and when the next visit is due. Where the work is a TR19® Grease clean, there’s also a certificate issued through the BESCA Vent Hygiene Elite portal.
Can you set up regular visits?
Yes. Regular plans can run on 3, 6 or 12-monthly cycles, to suit the system and how it’s used.
How do you protect the area?
We start with protection: floor sheeting and covers over nearby surfaces and equipment. The area is left tidy, with our waste taken away.
Does a filter exchange replace TR19 cleaning?
No, the two work together. A TR19® clean deals with the whole system, with a certificate and photo report.
What staff can safely do
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.
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. The inside of ducts and units needs a specialist.
Why deal with it now?
When filters block, extraction suffers. The kitchen gets hotter and smokier, and the fan works harder to pull air through. A regular exchange keeps the airflow where it should be. Planning a trip to South Mimms ahead is easier for everyone than a rushed one.
Every site is different, so we price each one individually. Size, access, the condition of the system and when we can work all play a part.
Why choose Duct Doctor in South Mimms
- Out-of-hours work and a 24/7 emergency line
- Photo reports with every job
- One number for every site across the South East and London
- CHAS, SafeContractor and ISO 9001
Read our cost guide or our accreditations.
What affects the quote in South Mimms
The quote reflects the site in front of us. We consider:
- Parking and loading at the site
- Working hours and out-of-hours timing
- Whether it’s a one-off visit or part of a schedule
- How big the system is
We do not list prices on the website, because the cost depends on the site in front of us. For a fixed quote, call 0345 646 2711 or send us an email, and we will explain what it covers.
Asking for a quote
To help us quote quickly, send us:
- Any access panels or hatches you can see
- Where the site is and what kind of site it is
- Where the plant sits or the system leaves the building, such as a roof or outside wall
- Photos showing the whole system and its surroundings
Here’s what helps us quote: the address, the type of site and when it’s open, a few photos and the last certificate or report, if there is one. Then phone us on 0345 646 2711, or email photos.
Do you need grease filter exchange in South Mimms?
Kitchens in South Mimms, as everywhere, find filter washing slips down the list on busy weeks. A missed wash or two is all it takes for filters to fill with grease.
Keep an eye out for these warning signs:
- Hand-washed filters that still look greasy
- Filter washing that keeps being missed
- A greasy plenum behind the filters
- Blocked baffle filters
A hall kitchen that only cooks for events, whether near Church of St Giles or elsewhere in South Mimms, still needs its extract cleaned, just less often.
Questions to ask before you book
- Whether the work can be done while the site is closed
- How areas they cannot reach will be recorded
- What’s included in the scope, part by part
- Whether the quote is based on a survey or pictures
What grease filter exchange looks like in South Mimms
The Food Standards Agency lists about 4 pubs, bars and clubs as registered food businesses within about 1.5 miles of central South Mimms. Where they serve hot food, their kitchen extracts need cleaning to TR19® like any restaurant’s. Fire safety in South Mimms falls to Hertfordshire Fire and Rescue Service. Grease in a kitchen extract is a recognised fire risk, and the fire authority enforces the law on managing it in most commercial premises. Food hygiene inspections in South Mimms are the job of Hertsmere council’s environmental health team. A greasy canopy or dripping filters are the sort of thing an inspection can pick up. A TR19® certificate and photo report after each clean gives you a record to show an inspector.
Term dates shape school work: for a school like St Giles' CofE Primary School, an extract clean fits neatly into a half-term or summer break. A hospital like Shenley Hospital, about 2.7 miles west, is the kind of site where a kitchen may cook for patients, staff and visitors all day.
South Mimms is about 2 miles west of Potters Bar, in Hertfordshire. For grease filter exchange in and around South Mimms, please call 0345 646 2711, or send details by email for a fixed quote. We work across South East England and London, South Mimms included. South Mimms is one of 381 towns, villages and districts in Hertfordshire we cover for grease filter exchange. For sites nearby, see our London page (15 miles or so).
Our technicians cover all of EN6 for grease filter exchange and the streets around it. If you need grease filter exchange at premises on St Giles' Avenue, Blanche Lane and Greyhound Lane or a nearby road, we can help. Other places close to South Mimms include Ridge (1 mile south-west), Dancers Hill (1 mile south-east), Kitts End (2 miles south-east), Well End (2 miles south-west) and Green Street (2 miles south-west). Further out, we also cover Watford (8 miles west), Hemel Hempstead (11 miles west), Stevenage (15 miles north), St Albans (6 miles north-west), Welwyn Garden City (7 miles north) and Harpenden (10 miles north-west).
Local landmarks in South Mimms
Locally, jobs take us to businesses close to The White Hart Public House, North Mimms Park and Dame Alice Owen's School and the streets around them. For rail, the closest station is Potters Bar station, roughly 1.6 miles east. Other landmarks nearby include Spires Shopping Centre (2.9 miles south-east) and Shenley Hospital (2.7 miles west). Open spaces near South Mimms include Darland's Lake and Furzefield Wood and Lower Halfpenny.
Also near South Mimms
Other services in South Mimms
How the visit works
We work around your opening hours, not the other way round. Most visits are booked for when the area is out of use, such as evenings, overnight, early mornings or weekends. When the team arrives, the work area is protected and the relevant equipment is switched off to cool, and the work takes a short visit, depending on how many filters the canopies hold. Seeing the system in photos first means the trip to South Mimms can be planned properly.
- We start by noting how many filters you have and what type they are.
- Together we set how often the filters should be changed.
- On each visit, the dirty filters come out of the canopy.
- Clean, dry filters are fitted in their place, with no gaps left between them.
- We flag any damaged filters or anything wrong with the canopy.
How to prepare
- Find the previous report, if there is one
- Move anything stored near the system
- Tell us about site rules, permits or sign-in
Ask for a quote
The quickest way to a quote is to send photos: 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.
Related advice
Aftercare tips
Think of this as the after-treatment advice, short and simple:
- Clear anything stored on or near the canopy
- Book full TR19 cleans alongside filter changes
- Tell us if the menu or opening hours change
- Always run the extract while cooking
Your next visit is scheduled before we leave. If the kitchen gets busier, the interval can be shortened to match.
Filter exchange and TR19 cleaning work best together. A maintenance plan that covers both means neither slips.