Hampshire · Grease filter exchange
Denvilles grease filter exchange
Grease filter exchange for commercial sites in Denvilles and across Hampshire. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.
- Grease dripping from the canopy
- Filters that come out of the sink still dirty
- Grease building up behind the canopy filters
What the work involves, part by part
The plenum
The plenum is the space behind the filters. It collects whatever grease the filters miss.
Mesh filters
Layers of mesh catch grease droplets. In a busy kitchen, mesh soon blocks and need frequent attention.
How we handle grease filter exchange in Denvilles
Think of filter exchange as routine care for the extract. It keeps airflow up and grease down between full cleans, and it saves your staff a greasy job. Full TR19 cleaning still comes at the right interval, with a certificate. If you have grease dripping from the canopy and filters left unwashed on busy weeks, we can help.
Around a smaller place like Denvilles, kitchen extracts tend to belong to pubs, cafés, takeaways and school or care home kitchens. Quieter kitchens still collect grease in the duct, just more slowly, so the interval is set by hours of use and grease readings.
Think of the report as the system’s health record: a dated account with pictures of everything we did. Grease extract cleans are also certificated to TR19® Grease through the BESCA VHE portal, ready for your insurer.
- Place
- Denvilles (PO9, PO10)
- Region
- Hampshire
- Records
- Photo report after each visit
- Quote
- A fixed quote up front
- Hours
- When your site is closed, plus a 24/7 line
- Phone
- 0345 646 2711
- Checked
- 30 October 2026
What affects the cost of grease filter exchange
A fixed price needs a few facts first. We look at:
- The condition of the system
- How big the system is
- When the work can happen, such as evenings, overnight or weekends
- Parking and loading at the site
No two sites are the same, so each one gets its own fixed quote. The size of the job, how we reach it, its condition and the working hours all make a difference.
What we need to know
When you call or email, these details help:
- How we’d reach plant on a roof or in a plant room
- A few general shots of the system
- The postcode and the type of business
- Any previous report or certificate
To get a fixed quote, call us on 0345 646 2711, or send details by email and tell us the type of site, your opening hours and roughly what the system looks like. A few photos and your last certificate or report help a lot. You’ll usually have a quote within one working day.
What happens if it’s left?
Grease-loaded filters are a fire risk in their own right. Flames from the range can be drawn up into the canopy and grease in the duct can carry a fire further. Clean filters mean less fuel in the canopy. When a site near Denvilles shuts unexpectedly, the people who rely on it notice at once.
What you pay reflects the actual work. That’s why every job is surveyed first, and why the quote is fixed before we start.
Why choose Duct Doctor in Denvilles
- Fixed quotes from a survey or pictures
- We diagnose before we treat
- Trading since 2009
- One contact for all your sites in London and the South East
What we do, step by step
The first job on site is protection: floors, worktops and anything near the work are covered. Then we make the system safe and start. It takes well under an hour for most canopies, and the area is cleaned down before we leave. In a smaller place like Denvilles, parking is rarely the issue, but tell us about gates, roof access and opening hours.
- We start by noting how many filters you have and what type they are.
- A change schedule is agreed to match the kitchen’s cooking hours.
- 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.
How to prepare
- Tell us where we can park and unload
- Arrange a key holder or contact on site
- Tell us about site rules, permits or sign-in
Get a fixed quote
Need a price for grease filter exchange? Please call 0345 646 2711, or send details by email with a few details about the site. We will explain what we’d do and send a fixed quote before you commit to anything.
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FAQs for Denvilles
Does being near the coast affect grease filter exchange in Denvilles?
It can. Denvilles is within about 1 mile of the coast, and salt air speeds up corrosion. Corroded fixings and housings are noted on the report so they can be dealt with.
Which environmental health team covers Denvilles?
The local authority for Denvilles is Havant council, and its environmental health team does the inspecting. How often a business is inspected depends on the risk rating the council gives it, so it’s worth staying ready all year.
Do you deal with bent or broken filters?
Filters that no longer fit properly need replacing. We will show you which ones when we find them.
Do you have a 24/7 line?
Yes, 24/7. Our office is open from 8am to 6pm on weekdays, and the emergency line covers the rest.
What do you do to protect the area?
Floors and surfaces near the work are sheeted before we start, and waste is contained as we go. At the end, the area is cleaned down.
Which grease filters does the service cover?
We exchange baffle and mesh filters. At the start, we note what your canopies use so the clean set always fits.
Can one contract cover all our sites?
Yes. We work across South East England and London, so we can schedule a run of sites as one programme. Each site gets its own report and pictures.
Where do the greasy filters go?
We take them away. That’s how an exchange works: clean filters in, dirty ones out, with no washing for your team.
When it’s something else
We will not sell you work that doesn’t address the problem, so these are the things it won’t cover:
- A canopy that does not capture the vapour properly
- Smell complaints that need odour control equipment
- A canopy that needs a proper clean
If in doubt, call us on 0345 646 2711 or send us an email and we’ll say what we think before you book.
What we work on in Denvilles
- Restaurants and pubs
- Wall canopies
- Mesh filters
- Baffle filters
- School and hospital kitchens
- Island canopies
Common problems we fix in Denvilles
Washing filters by hand doesn’t always get them clean. Grease lodges deep in baffles and mesh, and a quick rinse leaves it there.
The symptoms we are asked about most are:
- A canopy that drips grease
- Blocked baffle filters
- Filters that leave gaps in the canopy
- Poor airflow through the filters
If you run catering at a healthcare site, such as a hospital like Havant War Memorial Hospital about 1 mile west, the extract may need cleaning more often than a part-time kitchen.
Before you book anyone
- Whether a written report and pictures are included
- Whether they’re fully insured
- Their accreditations, such as BESCA Vent Hygiene Elite, CHAS or SafeContractor
- Exactly which parts of the system are covered
Grease filter exchange around Denvilles
Denvilles is within about 1 mile of the coast. Salt air speeds up corrosion of roof-level fans, discharge cowls and their fixings. Food Standards Agency data counts about 51 restaurants, cafés and canteens and about 44 takeaways and sandwich shops in Denvilles and the streets around it, up to about 1.5 miles out. Swapping filters on a schedule keeps kitchens like these drawing air properly. Environmental health officers from Havant council inspect food businesses in Denvilles. An officer looking round a kitchen will see the canopy, and grease there is hard to miss. Keeping each certificate and photo report on file helps show the extract is looked after.
Commuter trade near Warblington station can mean long cooking hours, and long hours put a kitchen into BESA’s more frequent cleaning bands. Where a hall near St Thomas à Becket Church, or anywhere in Denvilles, hosts lunch clubs or events, its extract gathers grease just as a café’s does.
Denvilles is about 1 mile south-east of Havant, in Hampshire. Every kind of commercial site in Denvilles, grease filter exchange is something we can help with. Visits can be booked for evenings, overnight or weekends so the site keeps running. We cover 683 places across Hampshire, large and small. For sites nearby, see our Portsmouth page, about 6 miles away.
Every address in PO9 and PO10 is within our area for grease filter exchange, from the main roads to the quietest streets. Grease filter exchange is available to premises on New Lane, Pook Lane and Elder Road and the roads around them. Neighbouring places we cover for grease filter exchange include Warblington (1 mile south), Havant (1 mile north-west), Emsworth (1 mile east), Langstone (1 mile south-west) and Leigh Park (1 mile north-west). Within a short drive, we also cover Gosport (9 miles south-west), Fareham (10 miles west), Horndean (4 miles north-west), Hedge End (15 miles west), Waterlooville (4 miles north-west) and Petersfield (10 miles north).
Near you in Denvilles
Around Denvilles, our work takes us to kitchens and buildings near Six Bells pub, St Albans Church and Fairfield Infant School. There’s a railway station in Denvilles itself: Warblington station. A little further out are Warblington Castle (0.7 miles south) and Havant War Memorial Hospital (1 mile west). Green spaces nearby include Brook Meadow (Emsworth).
What your team can do, and what needs us
Keep a record of what your team does. A simple log of filter washes, wipe-downs and checks helps show that the system is managed between specialist visits, next to our reports.
Some jobs should never be done in-house: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease need training, the right equipment and safe access. That is our job.