Buckinghamshire · Grease filter exchange
Longwick grease filter exchange
Professional grease filter exchange in and around Longwick, timed so the site keeps working and finished with a written report and pictures.
- Filters that leave gaps in the canopy
- Staff short of time to wash filters
- Missing filters in the filter bank
Grease filter exchange in Longwick: the local picture
According to Food Standards Agency records, there are about 7 pubs and bars across Longwick and its immediate surroundings (about a mile and a half). Wherever they cook, the canopy, duct and fan collect grease just as a restaurant’s do. Longwick sits within the area of Buckinghamshire Fire and Rescue Service. The Fire Safety Order puts the duty on whoever runs a kitchen to control its fire risk, and a greasy duct is fuel. Environmental health officers from Buckinghamshire council inspect food businesses in Longwick. Extraction counts as kitchen equipment, so its condition can come up on the day. Keeping each certificate and photo report on file helps show the extract is looked after.
If you look after a school kitchen, at a school such as Longwick Church of England Combined School or anywhere near Longwick, the holidays are the usual time for a TR19® clean. If you run a church or community hall kitchen, near Owlswick Chapel or elsewhere in Longwick, its extract still collects grease from every lunch and event.
Longwick is about 5 miles east of Thame, in Buckinghamshire. Wherever you are in the HP27 postcode area, we can carry out grease filter exchange at your premises. Our Buckinghamshire coverage runs to 263 places, and Longwick is one of them. We also work in Oxford, around 16 miles away.
Here we cover the HP27 postcode area for grease filter exchange. If you need grease filter exchange at premises on Headland End, Wickfields and Furrow Drive or a nearby road, we can help. Neighbouring places we cover for grease filter exchange include Owlswick (1 mile north), Alscot (1 mile east), Pitch Green (1 mile south-west), Ilmer (1 mile north-west) and Horsenden (1 mile south). Within a short drive, we also cover Aylesbury (6 miles north), High Wycombe (9 miles south-east), Chesham (11 miles east), Marlow (12 miles south), Amersham (12 miles east) and Beaconsfield (13 miles south-east).
What’s near Longwick
Typical jobs here are in premises near Princes Risborough School and The Red Lion Public House, among other places. For rail, the closest station is Monks Risborough station, roughly 1.3 miles east. Well-known places in the area include Great Kimble Dial Hill (2.4 miles east) and St John's Hospital (4.6 miles north). Green spaces nearby include Brush Hill Local Nature Reserve and Beacon Hill.
About our grease filter exchange in Longwick
Grease filters are the first line of defence in a kitchen extract. Their job is to stop grease getting further into the system, but only while they’re reasonably clean. With grease filter exchange, clean filters replace greasy ones at regular intervals. The work covers baffle filters, restaurants and pubs and school and hospital kitchens, and the jobs we see most are filters so greasy the air can barely pass and weak extraction at the canopy.
Kitchens around a place like Longwick are often in older buildings or single-storey extensions, where the duct may cross a roof void or climb an outside wall. Long horizontal runs like that hold grease and need access panels to reach.
Duct Doctor has been trading since 2009, and we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we carry full insurance.
- Location
- Longwick (HP27)
- Region
- Buckinghamshire
- Paperwork
- Report and pictures after the visit
- Quotes
- A fixed price before any work starts
- Working hours
- After hours by arrangement; emergencies any time
- Call
- 0345 646 2711
- Reviewed
- 30 October 2026
Managing agents and facilities teams in Longwick
For anyone managing more than one site, we can plan visits across the whole estate and price them together. Each site gets its own report and pictures, so each one has its own record.
Landlords, managing agents and facilities managers book us, not only the businesses that use the systems. Where a system serves more than one tenant, such as a shared riser, it helps to agree who arranges the work, and we’re happy to quote for all of it.
Do you need grease filter exchange in Longwick?
Sometimes a filter is taken out and never put back. Every gap in the filter bank lets grease straight into the plenum where it settles out of sight.
It’s time to book a visit if you see:
- Poor airflow through the filters
- Damaged filters letting grease past
- Grease dripping from the canopy
- Missing filters in the filter bank
Healthcare kitchens cannot easily close, so their extracts are cleaned overnight or between meal services; the nearest hospital to Longwick is St John's Hospital, about 4.6 miles north.
Questions to ask before booking
- What records you’ll receive afterwards
- Whether VAT is included
- What happens if part of the system cannot be accessed
- How they set the interval to the next visit
Also near Longwick
More services for Longwick
Looking after it afterwards
Looking after the system between visits is straightforward, and it helps at the next visit:
- Make sure we can reach the canopy on exchange day
- Do not let the full clean slip because filters are changed
- Report damaged filters so they can be replaced
- Clean the canopy surfaces regularly
The next exchange is already in the diary. If the kitchen gets busier, the interval can be shortened to match.
Saturated filters let more grease through. A regular cycle keeps the rest of the system cleaner between full cleans.
What the work involves, part by part
Canopy filter housings
Filters sit in a housing or channel in the canopy. A damaged housing leaves gaps.
Busy restaurant and pub kitchens
In a busy kitchen, filter washing is easy to skip. An exchange service takes it off the rota.
When it’s something else
In fairness, some problems need a different fix:
- Odours from the discharge that filters won’t stop
- Grease deep in the extract system
- A canopy that does not capture the vapour properly
If in doubt, phone us on 0345 646 2711, or send details by email and we will say what we think.
Parts of the system we cover
- Wall canopies
- Island canopies
- School and hospital kitchens
- Restaurants and pubs
- Mesh filters
- Baffle filters
What we do, step by step
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. Evenings, weekends or a closed day all work for a site in a place like Longwick.
- We count and measure the filters in every canopy.
- Together we set how often the filters should be changed.
- On each visit, the dirty filters come out of the canopy.
- We fit clean filters and check they sit snugly in the housing.
- If a filter is damaged or the plenum needs attention, we tell you.
Getting ready for the visit
- Clear the space around the work
- Let us know when the site is closed or quiet
- Plan for cooking equipment or plant to be off before we arrive
Ask for a quote
To help us quote: where the site is, what it is and its opening hours, a few photos and the last certificate or report, if there is one. Then phone us on 0345 646 2711 or email us.
Related advice
In-house cleaning or a specialist?
If your staff spot something between visits, like drips, unusual noise, smells or damaged filters, it’s best reported rather than tackled in-house. We will take a look and give you a fixed quote.
Day-to-day cleaning is something your team can do: wiping down canopy surfaces, cleaning filters and keeping a simple log. What they can’t safely do is clean inside the ductwork, the fan or the risers, which is where we come in.
Longwick: your questions answered
Can you get to a site in Longwick?
Yes. Villages and rural sites across the South East are part of our work, Longwick included. A survey first, from pictures or a visit, means we arrive with the right kit.
Can you come to Longwick after we close?
Yes, nights and weekends are routine for us. That way a site in Longwick doesn’t have to lose a day’s trading. Tell us your opening hours when you ask for a quote.
Is there a survey before the work?
Yes. Photos often do the job, and larger or hidden systems get a visit.
How long will you be on site?
Your quote will say how long we expect to be there. For a typical site, it takes a short visit, depending on how many filters the canopies hold.
Does the law say we must follow TR19?
No. The law sets the duty, and TR19® is the recognised benchmark for meeting it. Under the Fire Safety Order 2005, the responsible person must reduce fire risk, and many insurers can refuse or reduce a claim without proof of cleaning.
Are you accredited?
We are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we carry full insurance.
Can we skip TR19 cleans if the filters are changed regularly?
No. The rest of the system still collects grease at the right interval.
How often should grease filters be changed?
It varies with the type and amount of cooking. If filters clog early, the interval needs shortening and we’ll adjust it.