Portsmouth · Grease filter exchange

Grease filter exchange in Portsmouth

Grease filter exchange across Portsmouth and nearby, booked around your opening hours and finished with a written report and photos.

  • A greasy plenum behind the filters
  • Smoke and heat lingering under the hood
  • Blocked baffle filters

Grease filter exchange in Portsmouth

When it’s something else

Grease filter exchange can’t fix everything, and we’d rather say so up front. It doesn’t solve:

  • Extraction problems caused by the fan rather than the filters
  • An extract that was undersized from the start
  • Cooking smells reaching neighbours, which need odour control

Not sure which it is? You can call 0345 646 2711 or send us an email and we’ll tell you honestly.

Parts of the system we cover

  • Restaurants and pubs
  • Mesh filters
  • Baffle filters
  • School and hospital kitchens
  • Island canopies
  • Wall canopies

Grease filter exchange in Portsmouth, done properly

A clean set of filters is a simple, regular dose of prevention. It keeps airflow up and grease down between full cleans and takes a messy task off your team. The full TR19 clean then gives the system its clean bill of health. Common call-outs are for missing filters in the filter bank and grease filters clogged with grease, across mesh filters, school and hospital kitchens and wall canopies.

In Portsmouth, extract cleaning fits around service: after the last cover, before breakfast or on a day the kitchen is shut. Bigger sites can be done kitchen by kitchen, so cooking carries on elsewhere.

Every visit ends with a written report and pictures, so you have a record of what was done and when. Where the work is a TR19® Grease clean, the certificate is issued through the BESCA Vent Hygiene Elite portal.

Location
Portsmouth (PO6, PO4, PO1, PO2)
Region
Portsmouth
Paperwork
Photo report after each visit
Price
Fixed quote, normally within a working day
When we work
Overnight and weekend work, 24/7 emergency callout
Telephone
0345 646 2711
Last updated
30 October 2026
The Duct Doctor team standing beside their branded white and blue vans

What happens on the day

Your trading hours come first. Most visits are booked for when the area is out of use, such as evenings, overnight, early mornings or weekends. Once we’re in, the area is sheeted and anything that has to be off is turned off and cooled, and the job takes well under an hour for most canopies. Where a site in Portsmouth has more than one system, we can take them one at a time to keep the rest running.

  1. First, we record the size, type and number of filters in each canopy.
  2. A change schedule is agreed to match the kitchen’s cooking hours.
  3. At every visit, the greasy filters are lifted out.
  4. Clean, dry filters are fitted in their place, with no gaps left between them.
  5. We flag any damaged filters or anything wrong with the canopy.

Preparing for the visit

  • Dig out any earlier paperwork for the system
  • Let us know when the site is closed or quiet
  • Name a contact who can let us in at the agreed time

Get a fixed quote

If you need grease filter exchange in Portsmouth, phone us on 0345 646 2711, or email photos. Let us know the site type and the opening hours, and send photos or your last report if you can. We typically send a fixed quote within one working day.

Get a quick quote

Advice

What staff can safely do

In-house cleaning and specialist cleaning do different jobs. A daily filter wipe and a weekly filter wash keep grease down at the front of the system, but they do not reach the grease that builds up further in. That part needs specialist access and equipment.

Away from the kitchen, the in-house job is mainly checking: keeping grilles clear, noting unusual noise or smells and logging filter changes. The inside of ducts and units needs a specialist.

Do you need grease filter exchange in Portsmouth?

Hand-washed filters often come back still greasy. Grease hides in the folds of a baffle or the layers of a mesh and a sink wash rarely reaches it.

Most sites get in touch after spotting something like this:

  • Missing filters in the filter bank
  • Poor airflow through the filters
  • Grease left in baffles after washing
  • Filters left unwashed on busy weeks

Bursars and site managers at schools such as Manor Infant School tend to book extract cleaning for when the kitchen is empty.

Before booking anyone

  • Whether the whole system is included, or only the parts that are easy to reach
  • Proof of accreditation you can verify
  • How areas they cannot reach will be recorded
  • Whether the price is fixed

Questions to ask before you book

Common questions in Portsmouth

Can you clean school kitchen extracts in Portsmouth during the holidays?

Yes. Half-terms and the summer break are the natural time for school work. The FSA’s register shows about 48 schools and colleges with food registrations within roughly a mile and a half of Portsmouth. You can give us a ring on 0345 646 2711 or drop us a line with the dates the site is empty.

Do you work overnight in Portsmouth?

Yes, nights and weekends are routine for us. The work in Portsmouth can fit around your hours. Just give us a ring on 0345 646 2711 or email us with your opening times and we will plan around them.

Will I get paperwork for my records?

Yes, on every job. It’s a dated, written report with pictures, plus a certificate via the BESCA Vent Hygiene Elite portal for TR19® Grease cleans. File it with your fire safety records.

What’s TR19?

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.

How do you keep the site clean during the work?

Protection goes down first: floor sheeting and covers over nearby surfaces and equipment. The area is left tidy, with our waste taken away.

Can we book visits on a schedule?

Yes. Scheduled maintenance plans are part of what we do, with visits at the interval your system needs. The report from each visit recommends the next date.

Do you offer emergency callouts?

Yes, 24/7. Our office is open from 8am to 6pm on weekdays, with the emergency line covering every other hour.

How often should grease filters be changed?

There’s no single answer. The schedule is based on how heavily you cook and can change if your kitchen gets busier.

Why act early in Portsmouth

Leaving filters too long pushes more grease into the plenum and ducts. That makes the next full clean a bigger job, and grease may build up faster than the cleaning interval allows. Several systems on one site in Portsmouth are simpler to look after when the dates are set in advance.

No two sites are the same, so we price each one individually. The size of the job, how we reach it, its condition and the working hours all play a part.

Why Portsmouth businesses choose us

  • A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
  • We diagnose before we treat
  • A single point of contact for sites across the South East and London
  • A fixed price before any work starts

Read how cleaning jobs are priced and our accreditations.

Keeping the system healthy

After the visit, a few habits help the work last:

  • Report a dripping canopy early
  • Keep filter exchange and TR19 cleaning on the same plan
  • Make sure we can reach the canopy on exchange day
  • Mention it if the kitchen gets busier

The canopy looks cleaner and the air moves better from the moment they’re fitted. Keep the extract running while you cook so the filters do their job.

Bent or missing filters let grease straight past. Sorting them now keeps grease where it can be caught.

Managing agents and facilities teams in Portsmouth

If you look after several sites, we can plan visits across the whole estate and price them together. Each site gets its own report and photos, so each one has its own record.

Where a tenant occupies the premises but the landlord owns the building, it’s worth checking the lease for who maintains the systems. We can quote either party and send the paperwork to whoever needs it.

Grease, kitchens and Portsmouth

At about 1 mile from the coast, Portsmouth is close enough for sea air to matter. Salt in the air is hard on rooftop fans, discharge cowls and fixings, so we check them for corrosion as well as grease. Look up Portsmouth on the FSA’s food hygiene register and you’ll find about 262 restaurants, cafés and canteens and about 152 takeaways and sandwich shops within roughly a mile and a half of the centre of Portsmouth. Swapping filters on a schedule keeps kitchens like these drawing air properly. Portsmouth sits within the area of Hampshire and Isle of Wight 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.

A kitchen near Fratton station that serves breakfast and dinner can run its extract twelve hours or more, which shortens the cleaning interval. Where a hall near St Wilfrid, or anywhere in Portsmouth, hosts lunch clubs or events, its extract gathers grease just as a café’s does.

Portsmouth is in England. Sites in Portsmouth get the same service as everywhere we cover: a survey first, a fixed quote, work timed around your hours and a report with pictures. We cover 19 places across Portsmouth, from busy centres to quieter spots.

We cover every part of the PO6, PO4, PO1 and PO2 postcode area for grease filter exchange and the roads nearby. Whether your site is on Church Road, April Square and Rudmore Square or a nearby road, we can help. Main roads around Portsmouth include the A3 and A27, so getting to you is simple for grease filter exchange. Other places close to Portsmouth include Rudmore (1 mile north-west), Landport (1 mile south-west), North End (1 mile north), Fratton (1 mile south-east) and Kingston (1 mile south-east). Within a short drive, we also cover Wymering (3 miles north), Paulsgrove (3 miles north), Drayton (3 miles north-east) and Farlington (3 miles north-east).

Landmarks near Portsmouth

We work in commercial kitchens and buildings around The Portsmouth Academy, Alexandra Park and St Edmund's Catholic School and the streets around them. The nearest railway station is Fratton station, roughly 0.9 miles south of the centre. Other landmarks nearby include Royal Portsmouth Hospital (0.7 miles south-west) and Charles Dickens Birthplace Museum (within half a mile west). The countryside around Portsmouth includes Milton Locks and Portsdown Hill.

Map of Portsmouth © OpenStreetMap contributors
BESCA Vent Hygiene EliteMember, cleaning to BESA TR19® Grease
CHAS · SafeContractorISO 9001 and fully insured
Certificate and photo reportWith every clean
24/7 emergency calloutEvenings, nights and weekends
Since 2009South East England and London