Hertfordshire · Grease filter exchange
Grease filter exchange in Radwell, Hertfordshire
Grease filter exchange for Radwell, with a survey first and a report with photos at the end. Call for a fixed quote.
- Filter washing that keeps being missed
- Blocked baffle filters
- A greasy plenum behind the filters
Aftercare tips
Once we’ve finished, these simple steps help:
- Keep canopy surfaces wiped down
- Keep every filter in place during service
- Report a dripping canopy early
- Book full TR19 cleans alongside filter changes
Your next visit is scheduled before we leave. If the kitchen gets busier, the interval can be shortened to keep up.
Saturated filters let more grease through. Getting onto a regular exchange now keeps grease out of the plenum and ductwork between full cleans.
Grease filter exchange in Radwell
Baffle filters and mesh filters both fill with grease. Once they’re clogged, airflow drops and the fan has to work harder. A steady cycle of clean filters keeps extraction strong. We’re often asked to deal with filters left unwashed on busy weeks and a canopy running with filters missing, across restaurants and pubs, mesh filters and wall canopies.
In a small place like Radwell, kitchens are often in older or extended buildings, with long single-storey duct runs, and those horizontal sections are where grease settles. We agree access and timings in advance.
Accreditations are easy to claim and worth checking. Ours are BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease, plus CHAS, SafeContractor and ISO 9001, with full insurance on top.
- Location
- Radwell (SG7)
- Wider area
- Hertfordshire
- Records
- Written report with photos
- Quotes
- A fixed price before work begins
- Working hours
- Overnight and weekend work, 24/7 emergency callout
- Call
- 0345 646 2711
- Last updated
- 30 October 2026
Why act early in Radwell
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. Systems in rural buildings are often out of sight and out of mind.
The cost depends on how big the system is, what state it’s in and access to every part of it. We give you a fixed price before any work starts, so you know where you stand.
Why choose Duct Doctor in Radwell
- A single point of contact for sites across the South East and London
- Trading since 2009
- Out-of-hours work and a 24/7 emergency line
- A written report with photos after each visit
When to call us in Radwell
Filters get bent and damaged with handling. Damaged filters don’t sit flush, leaving gaps for grease to slip through.
The symptoms we’re asked about most are:
- Smoke and heat lingering under the hood
- Hand-washed filters that still look greasy
- Drips falling from the filters onto equipment
- Staff short of time to wash filters
Term dates shape school work: for a school like Norton St Nicholas CofE (VA) Primary School, an extract clean fits neatly into a half-term or summer break.
What your quote should include
- Whether the price is fixed
- Whether the whole system is included, or only the parts that are easy to reach
- What happens if part of the system can’t be accessed
- Which accreditations they hold, and whether you can check them
Fixed quotes for grease filter exchange in Radwell
We do not publish a price list, because sites vary so much. The quote depends on:
- A single visit or a regular plan
- How many systems or sites are involved
- Travel, parking and unloading
- Whether we need access equipment or extra panels
When the work has to happen, how we reach it and how big the site is can all change the price. Each of those is built into the quote and give you a fixed price before any work starts.
What to send for a quote
To speed up the quote, please include:
- Your opening hours and when the area is out of use
- Where the plant sits or the system leaves the building, such as a roof or outside wall
- Where the site is and what kind of site it is
- Problems your staff have spotted
For a fixed quote, call 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. Photos and the last report, if you have one, make the quote quicker. You will typically have a quote within one working day.
Multi-site and managed buildings
Facilities teams in offices, schools and healthcare sites book us too in Radwell and across Hertfordshire. Larger estates can be phased building by building around the people who use them.
Keeping records across a portfolio is half the battle. Every visit ends with a dated report and photos, so you can show an insurer or inspector what was done at each site.
Part by part
Baffle filters
Baffle filters use overlapping metal blades that force the air to change direction. Grease is thrown out of the airstream and collects on the baffles.
School, care home and staff kitchens
For kitchens closed in the holidays, visits can be timed around term or rota so the filters are clean when cooking picks up.
Also near Radwell
What else we do in Radwell
How it works
Before we leave, we walk the area with whoever is on site. Anything we couldn’t reach or that needs attention is pointed out there and then, and the same goes into the written report. All told, the work takes a few minutes per canopy, longer for a large kitchen with several canopies. Seeing the system in photos first means the trip to Radwell can be planned properly.
- We count and measure the filters in every canopy.
- A change schedule is agreed to match the kitchen’s cooking hours.
- On each visit, the dirty filters come out of the canopy.
- Clean filters go straight back in, seated properly with no gaps.
- Anything we notice, such as bent filters or a dirty plenum, is pointed out.
How to prepare
- Mention any locked doors, roof access or ceiling voids
- Let us know about parking and loading
- Make sure equipment near the work can be switched off and left to cool
Getting a quote
There’s no standard price list, because no two systems are the same. We look at your system first, from photos or on a visit, and then send you a fixed quote. To start, give us a ring on 0345 646 2711, or email photos.
Related advice
Radwell: your questions answered
Can school kitchens in Radwell be cleaned in the holidays?
Yes. The holidays are the usual time for school work. Food Standards Agency records list about 5 schools, colleges and universities with registered kitchens within about a mile and a half of Radwell. Send us your term dates when you call 0345 646 2711 or drop us a line, and we’ll fit the work in.
Can you come to Radwell after we close?
Yes. We work evenings, overnight and at weekends. The site is handed back ready to open. Just call us on 0345 646 2711, or send details by email with your opening times and we will plan around them.
Which accreditations do you hold?
We hold CHAS, SafeContractor and ISO 9001, alongside BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease. The Vent Hygiene Elite scheme is run by BESCA and audited independently.
Where do the greasy filters go?
The greasy set leaves with us for cleaning, so your staff do not have to wash them. Clean filters go straight in.
What happens to the waste?
We contain it and take it with us. We collect grease, debris and waste water as we go rather than letting it spread.
How do you keep the site clean during the work?
With sheeting and covers, before anything else happens. We keep the work contained and clean down when we finish.
Do you clean filters as well as exchanging them?
Yes, filter cleaning is available. The first step is looking at the filters you have, as damaged ones may be better replaced.
Do you work with multi-site operators?
Yes. Our area covers London and the South East, so we can schedule a run of sites as one programme. Every site has its own report.
Radwell kitchens: local notes
The FSA’s data shows about 10 pubs, bars and clubs registered across Radwell and its immediate surroundings (about a mile and a half). Breakfasts, bar meals and functions all put grease into the extract wherever they’re cooked. Radwell sits within the area of Hertfordshire Fire and Rescue Service. In most workplaces, including commercial kitchens, it’s the fire and rescue authority that enforces the Fire Safety Order. Environmental health officers from North Hertfordshire council inspect food businesses in Radwell. 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.
Older buildings often hide long, awkward duct runs, and if you run a kitchen at a historic venue in the area (Hinxworth Place is about 2.4 miles north), access may need planning. Healthcare kitchens can’t easily close, so their extracts are cleaned overnight or between meal services; the nearest hospital to Radwell is Fairfield Hospital, about 1.9 miles west.
Radwell is about 2 miles north of Letchworth, in Hertfordshire. Sites in Radwell get the same service as everywhere we cover: diagnosis first, a fixed price, out-of-hours working where necessary and a written report with photos. Radwell is one of 381 towns, villages and districts in Hertfordshire we cover for grease filter exchange. For sites nearby, see our Milton Keynes page, about 24 miles away.
Our technicians cover all of SG7 for grease filter exchange and the roads nearby. That includes premises on Radwell Lane and The Limes and nearby roads. Neighbouring places we cover for grease filter exchange include Stotfold (1 mile west), Stotfold Common (2 miles north-west), Fairfield (2 miles west) and Astwick (2 miles north-west). Within a short drive, we also cover Stevenage (7 miles south), Welwyn Garden City (14 miles south), Harpenden (15 miles south-west), Hitchin (5 miles south-west), Hertford (15 miles south) and Ware (15 miles south-east).
Near you in Radwell
Typical jobs here are in premises near The Knights Templar School, Norton School and The Chequers Public House. The closest station to Radwell is Baldock station, about 1.2 miles south-east of the centre. Well-known places in the area include Bygrave House (2 miles east) and Fairfield Hospital (1.9 miles west). The countryside around Radwell includes Arlesey Old Moat and Glebe Meadows.