Southampton · Grease filter exchange
Portswood grease filter exchange
Professional grease filter exchange in and around Portswood, timed so the site keeps working and signed off in writing with pictures.
- Gaps where filters have been removed
- A greasy plenum behind the filters
- Filter washing that keeps being missed
Grease filter exchange in Portswood
Good filters only work when they fit properly. Bent, damaged or missing filters leave gaps, so we check every one at each visit. Damaged filters are flagged so they can be replaced. The work covers restaurants and pubs, baffle filters and island canopies, and the jobs we see most are grease building up behind the canopy filters and damaged filters letting grease past.
For a smaller kitchen near Portswood, a TR19® clean is the same job as anywhere: canopy, filters, plenum, duct, fan and discharge. We plan the visit around your hours, with the journey sorted in advance.
Duct Doctor has been trading since 2009, and we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we carry full insurance.
- Place
- Portswood (SO17, SO14, SO18)
- Region
- Southampton
- Paperwork
- Written report with pictures
- Price
- A fixed quote up front
- Hours
- Evenings, overnight and weekends; 24/7 emergencies
- Telephone
- 0345 646 2711
- Updated
- 30 October 2026
How the visit works
Each visit runs to the same pattern: sheeting and protection first, isolate whatever needs isolating, carry out the grease filter exchange, clear away and leave you the report. On site, the work takes a short visit, depending on how many filters the canopies hold. Your opening hours decide when we come to Portswood, not ours.
- We start by noting how many filters you have and what type they are.
- We agree a schedule that suits how much the kitchen cooks.
- 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.
- If a filter is damaged or the plenum needs attention, we tell you.
How to prepare
- Name a contact who can let us in at the agreed time
- Plan for cooking equipment or plant to be off before we arrive
- Mention any sign-in, permit or induction we need
Get a fixed quote
To get a fixed quote, call 0345 646 2711 or drop us a line 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.
Related advice
Do you need grease filter exchange in Portswood?
Sometimes a filter is taken out and never put back. Every gap in the filter bank lets grease straight into the plenum and on into the ductwork.
Most sites get in touch after spotting one of these:
- Poor airflow through the filters
- Grease collecting in the filter channels
- A canopy that drips grease
- Missing filters in the filter bank
Healthcare kitchens can’t easily close, so their extracts are cleaned overnight or between meal services; the nearest hospital to Portswood is Royal South Hants Hospital, about 0.9 miles south.
What to look for in a quote
- How VAT is shown on the quote
- Whether a survey comes first
- How they set the interval to the next visit
- What paperwork you get at the end
For landlords and multi-site operators
Landlords, managing agents and facilities managers book us, not only the businesses that use the systems. Shared systems, like a riser serving several units, need a clear agreement on who books the work, and we can quote for the whole system.
Records are where multi-site compliance often slips. Every visit ends with a dated report and photos, ready to show insurers, fire officers or EHOs.
Portswood kitchens: local notes
Portswood is within about 2 miles of the coast. Salt in the air is hard on rooftop fans, discharge cowls and fixings, so we check them for corrosion as well as grease. There are about 225 restaurants, cafés and works canteens and about 117 takeaways and sandwich shops within roughly a mile and a half of the centre of Portswood, according to the Food Standards Agency’s register. Clogged filters slow the airflow, and busy kitchens like these clog them fast. Kitchens in Portswood get their food hygiene inspections from Southampton council. They look at how clean the premises and equipment are, and the kitchen extract is part of that. A TR19® certificate and photo report after each clean gives you a record to show an inspector.
If you look after a school kitchen, at a school such as St Denys Primary School or anywhere near Portswood, the holidays are the usual time for a TR19® clean. For kitchens close to St Denys station, where the day often starts early and ends late, the extract can be cleaned overnight.
Portswood is about 1 mile north of Southampton, in Southampton. Whether your site is in the middle of Portswood or further out, we cover grease filter exchange for every kind of premises, from a single unit to a large public building. 40 places in Southampton are on our list, from busy centres to quieter spots.
Our technicians cover all of the SO17, SO14 and SO18 postcode area for grease filter exchange and the streets around it. You will find streets such as Ivy Road, Alma Road and Lawn Road, all of which we cover for grease filter exchange. With the A335 and A3035 close by, Portswood is easy for our technicians to reach at any hour. Close by, we work in St Denys (1 mile south-east), Southampton (1 mile south), Inner Avenue (1 mile south-west), Bitterne Manor (1 mile south-east) and Bitterne Park (1 mile east). We also work in nearby towns such as Thornhill (3 miles south-east), Maybush (3 miles west), Eling (4 miles west), Rownhams (3 miles north-west), Millbrook (3 miles west) and Weston (3 miles south).
Landmarks near Portswood
Around Portswood, our work takes us to kitchens and buildings near St Anne's Catholic School, St Mary's Independent School and South Western Arms and the streets around them. Portswood has its own railway station: St Denys station. Nearby you will also find Marlands Shopping Centre (1.5 miles south) and Royal South Hants Hospital (0.9 miles south). Open spaces near Portswood include Netley Common.
Leave it or put it right?
Filters full of grease are fuel sitting right above the cooking. A flare-up on the range can reach them, and from there into the duct. Keeping filters clean takes some of that fuel away. A visit arranged in advance is far less disruptive than a callout on a busy day.
What you pay reflects the actual work. That’s why every job is surveyed first, and why the quote is fixed before any work starts.
Why Portswood businesses choose us
- Photo reports with every job
- Survey first, then a fixed quote
- Ventilation hygiene specialists since 2009
- CHAS and SafeContractor accredited, with ISO 9001
See our cost guide and how to check a contractor.
How the job changes from site to site
Baffle filters
Baffle filters are robust and widely used in commercial canopies. They still need regular cleaning as the collected grease builds up between the blades.
Mesh filters
Grease lodges deep in the layers of a mesh filter, which makes hand-washing hard work.
Portswood questions
Do you clean school canteen extracts around Portswood out of term?
Yes. The holidays are the usual time for school work. With about 43 schools and colleges on the FSA’s register within roughly a mile and a half of Portswood, it pays to plan holiday dates ahead. Tell us your holiday dates and we will book the visit for when the site is empty.
Does being near the coast affect grease filter exchange in Portswood?
It can. Salt air reaches Portswood, which is within about 2 miles of the coast, and it speeds up rust. A fan housing that is rusting near the coast can fail sooner, so it’s worth catching early.
Which accreditations do you hold?
Our accreditations are CHAS, SafeContractor and ISO 9001, and we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. The Vent Hygiene Elite scheme is run by BESCA and audited independently.
Where does the waste go?
Anything we remove is contained as we work and taken away with us, from grease and debris to used cleaning water. We don’t leave it behind.
Do you have a 24/7 line?
Yes. There’s a 24/7 emergency line, for problems that cannot wait. Ring any time and tell us what’s happened.
Does a filter exchange replace TR19 cleaning?
No. Clean filters help keep grease down, but the ducts and plenum still need cleaning at the right interval.
Will you tell us when the next visit is due?
Yes. The report recommends when the next visit should be, based on what we found and how the system is used.
Is there a survey before the work?
Yes. We always survey first, from your pictures and details, or with a visit where necessary. Then you get a fixed quote.
Nearby places to Portswood
Also in Portswood
Aftercare tips
A little care between visits keeps the system in better shape. We recommend:
- Mention it if the kitchen gets busier
- Look out for drips from the canopy
- Keep every filter in place during service
- Keep the canopy clear for exchange visits
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 book that in.
If cooking has stepped up, the filter schedule should too. Changing the interval early stops grease building up unseen behind the canopy.
When something else is needed
We won’t sell you work that doesn’t address the problem, so here are the limits:
- A heavily greased plenum or canopy, which needs cleaning to TR19
- Smell complaints that need odour control equipment
- A canopy too small for the cooking beneath it
If in doubt, phone us on 0345 646 2711, or email photos and we’ll say what we think.
What the work covers
- Wall canopies
- Restaurants and pubs
- School and hospital kitchens
- Baffle filters
- Island canopies
- Mesh filters