Hertfordshire · Grease filter exchange
Grease Filter Exchange in Radlett
Grease filter exchange across Radlett and nearby, booked around your opening hours and finished with a written report and photos.
- Drips falling from the filters onto equipment
- Filters left unwashed on busy weeks
- Grease left in baffles after washing
Grease filter exchange in Radlett, done properly
Whether your canopy has baffle or mesh filters, they load up with grease. Clogged filters choke the airflow and the extract struggles. A steady cycle of clean filters keeps extraction strong. Typical jobs include poor airflow through the filters and grease collecting in the filter channels, across wall canopies, school and hospital kitchens and mesh filters.
In a smaller place like Radlett, many kitchens sit in older buildings or later extensions, where the duct may cross a roof void or climb an outside wall. Flat runs collect grease and need proper access to clean.
Think of the report as the system’s health record: dated, with photos, and showing what was done. Grease extract cleans are also certificated to TR19® Grease through the BESCA VHE portal, ready for your insurer.
- Place
- Radlett (WD7)
- Wider area
- Hertfordshire
- Reporting
- Photo report after each visit
- Quote
- A fixed quote up front
- Working hours
- After hours by arrangement; emergencies any time
- Phone
- 0345 646 2711
- Reviewed
- 30 October 2026
What the work involves, part by part
Baffle filters
Baffle filters use overlapping metal blades that force the air to change direction. Grease drops out as it does.
The plenum
A greasy plenum is a sign filters have been left too long, or that a full clean is due.
What happens if it’s left?
Once filters are saturated, more grease gets past them. The ductwork then loads up faster, and grease may build up faster than the cleaning interval allows. A site near Radlett that has to close at short notice is hard to cover for.
Working hours, access and the scale of the site all affect the cost. We take each of them into account and give you a fixed price before any work starts.
Why choose Duct Doctor in Radlett
- One number for every site across the South East and London
- A fixed price before any work starts
- We are fully insured
- Member of BESCA Vent Hygiene Elite, cleaning to BESA TR19® Grease
What affects the cost of grease filter exchange
The quote reflects the site in front of us. We take into account:
- The condition we find in the survey
- Parking and loading at the site
- The number of sites or systems
- Access, including roofs, risers and ceiling voids
Kitchens, offices, schools and hospitals are all priced the same way: the size of the job, access, condition and working hours. Call for a fixed quote and we’ll explain each part.
What we need to know
A few details help us quote accurately. When you get in touch, it helps to send:
- Any previous report or certificate
- The site address and the type of premises
- Any access panels or hatches you can see
- How we’d reach plant on a roof or in a plant room
We do not publish a price list, because every site is different. Instead, we look at your site first, from photos or a survey, and then give you a fixed quote. To get going, phone us on 0345 646 2711, or email photos.
How it works
There’s very little for your team to do on the day. Someone lets us in at the agreed time and shows us where everything is, and the rest is down to us. Afterwards, the area is left tidy and the written report follows. For a place like Radlett, we load the van from the survey notes so the work can be done in one visit where possible.
- We count and measure the filters in every canopy.
- Together we set how often the filters should be changed.
- Each visit starts with the used filters being removed.
- Clean, dry filters are fitted in their place, with no gaps left between them.
- Anything we notice, such as bent filters or a dirty plenum, is pointed out.
Getting ready for the visit
- Let us know about permits to work or site inductions
- Agree a time when the area can be out of use
- Make sure someone can let us in and lock up afterwards
Get a fixed quote
Getting a quote does not take long. Send a few details and photos, and we normally reply with a fixed quote within one working day. Where a survey is needed, we arrange a time that suits the site.
Read more
Honest limits
Some problems need a different service or another trade:
- A noisy or failed extract fan
- An extract that was undersized from the start
- Cooking smells reaching neighbours, which need odour control
Not sure which it is? You can phone us on 0345 646 2711, or send details by email and we will tell you honestly before you book.
What we work on in Radlett
- School and hospital kitchens
- Mesh filters
- Wall canopies
- Island canopies
- Restaurants and pubs
- Baffle filters
Grease, kitchens and Radlett
Food Standards Agency records list about 24 cafés, restaurants and staff canteens and about 7 sandwich bars and takeaways in Radlett and the streets around it, up to about 1.5 miles out. Clogged filters slow the airflow, and busy kitchens like these clog them fast. Fire safety in Radlett falls to Hertfordshire Fire and Rescue Service. Its fire safety officers can audit commercial kitchens, and grease in the extract is part of a kitchen’s fire risk. It’s Hertsmere council that sends environmental health officers to food businesses in Radlett. A greasy canopy or dripping filters are the sort of thing an inspection can pick up. Our report lists what was cleaned and when, which is useful to have ready.
Church and community hall kitchens, near St John or anywhere around Radlett, are easy to forget, but their extracts collect grease like any other. If you cook for passing trade around Radlett station, the extract can be cleaned between your last and first customer.
Radlett is about 3 miles north-west of Borehamwood, in Hertfordshire. Whether your site is in the middle of Radlett or further out, grease filter exchange is available to all kinds of commercial premises, from a single unit to a large public building. Our area takes in 381 places across Hertfordshire, from busy centres to quieter spots. You can also see our page for London, roughly 16 miles from Radlett.
All of WD7 is within our area for grease filter exchange, from the main roads to the quietest streets. We cover sites on Upper Station Road, Station Road and Barn Close and nearby roads. Main roads around Radlett include the B462 and A5183, which makes travel easy for evening and night visits. Neighbouring places we cover for grease filter exchange include Kemprow (1 mile west), Round Bush (1 mile south-west), Letchmore Heath (1 mile south-west), Aldenham (2 miles south-west) and Patchetts Green (2 miles south-west). Within a short drive, we also cover Watford (4 miles south-west), Hemel Hempstead (8 miles north-west), St Albans (5 miles north), Welwyn Garden City (10 miles north-east), Harpenden (9 miles north) and Hoddesdon (14 miles east).
Around Radlett
Around Radlett, our work takes us to kitchens and buildings near The Cat And Fiddle Public House and the streets around them. There’s a railway station in Radlett itself: Radlett station. Well-known places in the area include Radlett and District Museum (under half a mile south-east) and Harlequin Centre (3.7 miles south-west). The countryside around Radlett includes Verulamium Lake and Broad Colney Lakes.
Signs you need grease filter exchange in Radlett
The type of cooking matters. Frying, grilling and chargrilling produce far more grease than steaming or baking, so the right exchange interval varies.
Keep an eye out for any of the following:
- Filters that come out of the sink still dirty
- A canopy running with filters missing
- Grease dripping from the canopy
- Grease building up behind the canopy filters
If you run catering at a healthcare site, such as a hospital like Shenley Hospital about 1.4 miles north-east, the extract may need cleaning more often than a part-time kitchen.
Questions to ask before booking
- When the next visit should be, and why
- Their accreditations, such as BESCA Vent Hygiene Elite, CHAS or SafeContractor
- When they can work, and whether that’s outside your opening hours
- Whether VAT is included
Places near Radlett
Other services in Radlett
Questions from Radlett
Can you clean school kitchen extracts in Radlett during the holidays?
Yes. Half-terms and the summer break are the natural time for school work. The FSA’s register shows about 5 schools and colleges with food registrations within roughly a mile and a half of Radlett. Tell us your holiday dates and we will book the visit for when the site is empty.
Who inspects food businesses in Radlett?
That is Hertsmere council, whose environmental health officers carry out food hygiene inspections in Radlett. Have your latest TR19® certificate and photo report to hand, as an officer may ask how the extract is maintained.
Is Radlett in your area?
Yes. We cover Radlett and the rest of Hertfordshire, as part of our work across South East England and London. To book, phone us on 0345 646 2711 or send us an email.
What should go in our maintenance log?
The reports and certificates from each visit, plus your own logs. They’re what an insurer, fire officer or EHO may ask for, so keep them together and easy to find.
How long will you be on site?
We will confirm the time with your quote. In most cases, the work takes well under an hour for most canopies.
How much notice should we give?
It depends on the time you need and how big the job is. Mention your preferred dates with your enquiry, and for anything urgent, ring our 24/7 emergency line.
Can damaged filters stay in the canopy?
A bent filter leaves a gap for grease. We point them out on the visit so they can be replaced.
Which kinds of sites do you work on?
Any commercial site with kitchens or ventilation, from a single café to a large school. We work with hotels, schools, care homes, offices, retail and leisure sites.
Multi-site and managed buildings
Whether it’s one building or many, you get the same standard: a survey first, a fixed quote, the work timed around the site and a report with pictures.
Under the Regulatory Reform (Fire Safety) Order 2005, the responsible person must assess and reduce fire risk, which may be the employer, owner, landlord, FM or managing agent. With shared responsibility, good records help everyone.