Hertfordshire · Ductwork cleaning
Ductwork Cleaning in Great Wymondley
Cleaning of kitchen extract ductwork, horizontal runs and vertical risers through access panels for businesses, landlords and public buildings in Great Wymondley. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.
- Duct runs that cannot be reached
- A rancid smell from the extract duct
- Duct runs with no cleaning record
Ductwork cleaning for kitchens and businesses in Great Wymondley
Duct cleaning is the hardest part of an extract clean, and the part most often skipped. Without enough access panels, long stretches can go years without being touched. Each section we can reach is cleaned, and any we cannot is written down, so you know exactly where you stand. If you’re dealing with a duct clean needed for an insurer and duct runs with no cleaning record, we can help, from attenuators, access panels and horizontal duct runs onwards.
In a village or hamlet like Great Wymondley, the kitchens that need extract cleaning are typically a pub, a school, a care home or a hall kitchen, wherever there is one. Every one of them still needs its extract kept clear of grease.
Duct Doctor has been trading since 2009, and we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. CHAS, SafeContractor and ISO 9001 are in place too, and we carry full insurance.
- Where
- Great Wymondley (SG4)
- Region
- Hertfordshire
- Records
- TR19® certificate and photo report
- Quote
- Fixed quote, usually within a working day
- Working hours
- Overnight and weekend work, 24/7 emergency callout
- Call
- 0345 646 2711
- Updated
- 30 October 2026
Great Wymondley kitchens: local notes
There are about 9 restaurants, cafés and canteens and about 6 takeaways and sandwich shops within roughly a mile and a half of the centre of Great Wymondley, according to the Food Standards Agency’s register. The duct above a busy canopy coats itself in grease long before anyone sees it. Great Wymondley is covered by 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 Great Wymondley. An officer looking round a kitchen will see the canopy, and grease there is hard to miss. Our report lists what was cleaned and when, which is useful to have ready.
Historic houses near Great Wymondley, such as Knebworth House about 4.9 miles south, are a reminder that older buildings with event kitchens can have long, awkward duct routes. If you run catering at a healthcare site, such as a hospital like Lister Hospital about 1.6 miles south-east, the extract may need cleaning more often than a part-time kitchen.
Great Wymondley is about 2 miles east of Hitchin, in Hertfordshire. We provide ductwork cleaning for commercial premises of every kind in Great Wymondley and the rest of Hertfordshire. Our Hertfordshire coverage runs to 381 places, and Great Wymondley is one of them. Milton Keynes is in our area too, about 24 miles from Great Wymondley.
All of SG4 is within our area for ductwork cleaning, from the main roads to the quietest streets. Whether your site is on Graveley Road, Hitchin Road and Arch Road or anywhere close by, we can help. If your site is just outside Great Wymondley, we cover Little Wymondley (1 mile south), Poets Estate (1 mile north-west), Graveley (1 mile south-east), Titmore Green (1 mile south) and Willian (1 mile north-east). Within a short drive, we also cover Stevenage (3 miles south-east), St Albans (14 miles south), Welwyn Garden City (10 miles south), Harpenden (10 miles south-west), Hatfield (12 miles south) and Hertford (12 miles south-east).
What’s near Great Wymondley
Around Great Wymondley, our work takes us to kitchens and buildings near Hitchin Girls' School, The Green Man pub and Kingshott School. The closest station to Great Wymondley is Hitchin station, about 1.4 miles north-west of the centre. Nearby you’ll also find North Hertfordshire Museum (2 miles west) and Lister Hospital (1.6 miles south-east). Green spaces nearby include Purwell Ninesprings.
Keeping the system healthy
So the system stays in good health:
- Report any grease dripping from duct joints
- Don’t switch the extract off early
- File each certificate and photo report in the maintenance log
- Ask for a grease thickness test if the kitchen gets busier
Every panel we open is refitted when we finish, and the surrounding area is left clean. Waste grease and water are taken away.
Have access panels fitted where sections can’t be reached. It doesn’t stop grease forming, but it stops it building unseen.
How the visit works
Your staff do not need to do much on the day. Someone lets us in at the agreed time and shows us where everything is, and we take it from there. Afterwards, the area is left tidy and the written report follows. If you can send photos, we can arrive in Great Wymondley knowing what to expect.
- The duct route is surveyed and every access point found.
- We take grease readings along the route.
- Once the kitchen has closed, we protect the area and open the panels.
- Heavy deposits come out by hand, then each section is degreased.
- Panels are closed, readings and photos repeated, and unreachable sections recorded.
Before we arrive
- Move anything stored near the system
- Have your last certificate or report to hand
- Let us know when the site is closed or quiet
Getting a quote
Here’s what helps us quote: the address, the type of site and when it’s open, photos of the system and any previous report or certificate. Then call us on 0345 646 2711 or use the quote form.
Related advice
Do you need ductwork cleaning in Great Wymondley?
The further the air travels from the cooking, the cooler it gets. As it cools, the grease it carries condenses onto the duct walls, so duct runs keep collecting grease long after the canopy.
What we are most often called out for:
- Smells of old cooking grease from the ductwork
- Years of grease along the duct floor
- Ductwork that has never been cleaned
- A duct clean needed for an insurer
School kitchens, at schools like Wymondley Junior Mixed and Infant School for example, are usually cleaned in the holidays so no lunches are lost.
Questions to ask before you book
- What paperwork you get at the end
- Whether the whole system is included, or only the parts that are easy to reach
- How VAT is shown on the quote
- Proof of insurance
Landlords, agents and facilities managers
Running several sites is easier with one contractor. We work across London and the South East, so visits at different addresses can be planned together and kept to a regular schedule.
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 pictures, so each one has its own record.
What affects the cost of ductwork cleaning
We quote each job individually. This is what makes a difference:
- Site rules, permits and inductions
- Whether several sites go on one quote
- Whether it’s a one-off visit or part of a schedule
- When the work can happen, such as evenings, overnight or weekends
The cost depends on the size of the system, the condition it’s in and access to every part of it. We give you a fixed price before work begins, so you know where you stand.
Asking for a quote
We can often survey from pictures. The most useful are:
- When the site is open and when it’s quiet
- The paperwork from the last visit, if you have it
- Wide photos of the system and the area around it
- Problems your staff have spotted
Need a price for ductwork cleaning? Please phone us on 0345 646 2711 or send us an email and tell us about the site. We’ll explain what we’d do and send a fixed quote before you commit to anything.
Why act early in Great Wymondley
TR19® is not law, but the duty to manage fire risk is. The Fire Safety Order 2005 makes the responsible person assess and reduce fire risk, including the grease inside the extract ductwork. Out of sight is the usual reason a rural system goes too long without attention.
The price reflects the work, not guesswork. That is why every job is surveyed first, and the price is agreed before work begins.
What you get with us
- Accredited under CHAS and SafeContractor, with ISO 9001
- Trading since 2009
- Photo reports with every job
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
See what affects the cost or our accreditations and certificates.
What a clean will not put right
Some problems need a different service or another trade:
- A failed fan motor at the end of the duct (a fan repair job)
- A damper stuck open in the duct
- Sections that can’t be reached safely without new access (those are recorded, and panels can be fitted)
Not sure which it is? You can call us on 0345 646 2711 or email us and we’ll tell you honestly.
Parts of the system we cover
- Bends and junctions
- Multi-storey ducts
- Attenuators
- Access panels
- Horizontal duct runs
- Vertical risers
Common questions in Great Wymondley
Who would carry out a food hygiene inspection at a kitchen in Great Wymondley?
That is North Hertfordshire council, whose environmental health officers carry out food hygiene inspections in Great Wymondley. It helps to keep the extract cleaning records with your food safety paperwork, so they’re ready if asked for.
Do you work in villages like Great Wymondley?
Yes, Great Wymondley is part of our area, however small the site. Just mention lanes, gates or anything else about the site when you book.
What should I send you?
Some photos and a quick description of the system plus the address and your hours. If we need more, we will ask.
What happens to the waste?
We take it away when we go. While we work, it’s kept contained so the area stays clean.
What do you do to protect the area?
Protection goes down first: sheeting over floors, worktops and anything close to the work. The area is left tidy, with our waste taken away.
How often does extract ductwork need cleaning?
It depends mostly on daily cooking hours. Heavy use of 12 to 16 hours a day means at least every 3 months, while lighter use can go longer.
Is there a survey before the work?
Yes, always. We diagnose before we treat: the survey shows what needs doing and what access we need, and the quote is based on that.
How can I tell if my extract ducts are dirty?
Signs include grease dripping from joints, smells and a fan working harder, but the only sure way is to measure. Grease thickness testing shows exactly where the duct stands.