Hertfordshire · Ductwork cleaning
Ductwork Cleaning in Harmer Green
Cleaning of kitchen extract ductwork, horizontal runs and vertical risers through access panels for businesses, landlords and public buildings in Harmer Green. CHAS, SafeContractor and ISO 9001, and fully insured.
- Sections of duct with no access panels
- Proof of duct cleaning for the insurer
- A grease test showing the duct is overdue
How we handle ductwork cleaning in Harmer Green
Grease in a duct is hidden, which is exactly why it’s dangerous. A flare-up drawn up from the range can light it, carrying a fire along the duct and into rooms far from the kitchen. Removing it is the whole point. We’re often asked to deal with a grease test showing the duct is overdue and years of grease along the duct floor, on horizontal duct runs, bends and junctions and attenuators.
Rural kitchens often have long, low duct runs through a roof space or along an outside wall, and those horizontal sections are where grease settles. Access, parking and timings are agreed before the day.
For insurers and inspectors, the record counts. That’s why every job is written up in a report with pictures, and grease extract cleans come with a TR19® certificate issued through the BESCA Vent Hygiene Elite portal.
- Where
- Harmer Green (AL6)
- Region
- Hertfordshire
- Reporting
- Certificate plus before-and-after photos
- Price
- Fixed quote, typically within a working day
- Hours
- Evenings, overnight and weekends; 24/7 emergencies
- Telephone
- 0345 646 2711
- Last updated
- 30 October 2026
Aftercare tips
No system stays clean for ever, but care slows the build-up. Our tips:
- File each certificate and photo report in the maintenance log
- Flag drips from the duct straight away
- Do not block access panels with shelving or stock
- Ask us about extra access panels where sections cannot be reached
The report gives a recommended next clean date, based on the readings and your daily cooking hours, in line with BESA guidance.
Run the extract the whole time the kitchen is cooking. Moving air carries vapour through rather than letting it settle, so switching off early adds to the build-up.
Fixed quotes for ductwork cleaning in Harmer Green
The diagnosis comes before the price. The main factors are:
- The condition of the system
- How big the system is
- A single visit or a regular plan
- Where the site is and how we reach it
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 go through it with you.
What to send for a quote
We can often survey from pictures. The most useful are:
- The postcode and the type of business
- Problems your staff have spotted
- How we’d reach plant on a roof or in a plant room
- Any access panels or hatches you can see
We don’t publish a price list, because no two systems are the same. We look at your system first, from pictures or on a visit, then send a fixed quote. To get going, call us on 0345 646 2711, or email photos.
Harmer Green: your questions answered
Which fire authority looks after Harmer Green?
Fire safety enforcement in Harmer Green is handled by Hertfordshire Fire and Rescue Service. Records of extract cleaning are a sensible thing to have ready if a fire safety officer carries out an audit.
Who would carry out a food hygiene inspection at a kitchen in Harmer Green?
Kitchens in Harmer Green are inspected by East Hertfordshire council’s environmental health officers. An officer may look up into the canopy, so clean filters on the day and a recent certificate on file both help.
Can you come out in an emergency?
Yes. Our emergency line runs 24/7 for anything that cannot wait until a planned visit. Ring any time and tell us what’s happened.
Can one contract cover all our sites?
Yes. Tell us the addresses and what each needs and we will quote them together.
Which sectors do you work in?
We work for restaurants, pubs, hotels, schools, colleges, hospitals, care homes, offices and shops, as well as food production and leisure sites.
Can you fit access panels in our ductwork?
Yes, we install duct access panels. Panels go where they give the best access to sections that couldn’t be reached, and we will recommend where.
Do you have insurance?
Yes. We’re fully insured, and we can share the details when you need them.
Do you offer maintenance contracts?
Yes, of course. Send details of the systems and how they’re used and we will propose a schedule with a fixed quote.
How the job changes from site to site
Multi-storey and shared buildings
In a building with several floors, the duct may pass other tenants’ spaces. Access is planned with the building’s managers, so the clean is done safely and quietly.
Access panels
Panels have to seal properly once they’re closed so the duct stays tight. A damaged panel is noted on the report.
When something else is needed
To be straight with you, some problems need a different fix:
- A duct that is too small or badly routed for the kitchen (a design issue)
- Ductwork that is corroded, split or holed (that needs a ductwork contractor)
- A worn-out fan that needs replacing
If in doubt, call 0345 646 2711 or email us and we will say what we think.
Parts of the system we cover
- Attenuators
- Bends and junctions
- Multi-storey ducts
- Horizontal duct runs
- Vertical risers
- Access panels
How the visit 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. Photos of the system and how to reach it help us plan a visit to Harmer Green.
- First the duct route is traced and every access point noted.
- Grease readings are taken at set points along the duct.
- Access panels are opened and heavy deposits scraped out by hand.
- The duct is degreased with the method that suits the grease, from degreasers to hot water or steam.
- Readings and photos are repeated and any section we couldn’t reach is recorded.
How to prepare
- Tell us about site rules, permits or sign-in
- Arrange a key holder or contact on site
- Tell us the best time to work, such as after service or at a weekend
How to get a quote
The quickest way to a quote is to send photos: wide shots of the system, close-ups of anything that worries you and how we’d get to it. Add the site type and your opening hours, and many jobs can be priced from that alone.
Advice
Why deal with it now?
BESA guidance says grease shouldn’t exceed a mean of 200 microns between cleans. A reading of 500 microns or more at any point means a spot clean straight away. Leaving the duct makes those limits harder to keep to. With notice, the visit to Harmer Green can be fitted around your bookings and events.
Every site is different, so we price each one individually. Size, access, the condition of the system and when we can work all play a part.
Why book with us
- Fixed quotes, typically within one working day
- CHAS, SafeContractor and ISO 9001
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- We diagnose before we treat
Kitchen extracts in Harmer Green
According to Food Standards Agency records, there are about 15 pubs, bars and clubs within 1.5 miles or so of the middle of Harmer Green. Where they serve hot food, their kitchen extracts need cleaning to TR19® like any restaurant’s. It’s East Hertfordshire council that sends environmental health officers to food businesses in Harmer Green. They look at how clean the premises and equipment are, and the kitchen extract is part of that. Keeping each certificate and photo report on file helps show the extract is looked after. Hertfordshire Fire and Rescue Service covers Harmer Green. Fire and rescue authorities enforce the Fire Safety Order in most non-domestic premises, and in a kitchen that fire risk includes the grease in the extract.
Healthcare kitchens, like those at hospitals such as Queen Elizabeth II Hospital (about 3.4 miles south), often cook for long hours, which puts them in BESA’s heavier-use bands. Term dates shape school work: for a school like Oaklands Primary School, an extract clean fits neatly into a half-term or summer break.
Harmer Green is about 2 miles north of Welwyn Garden City, in Hertfordshire. We provide ductwork cleaning for businesses, landlords and public buildings in Harmer Green and the rest of Hertfordshire. Harmer Green is one of 381 towns, villages and districts in Hertfordshire we cover for ductwork cleaning. We also work in London, about 23 miles from Harmer Green.
Here we cover the AL6 postcode area for ductwork cleaning. Neighbouring places we cover for ductwork cleaning include Burnham Green (1 mile east), Tewin Wood (1 mile east), Oaklands (1 mile north-west), Bull's Green (1 mile north-east) and Digswell (1 mile south-west). We also work in nearby towns such as Watford (15 miles south-west), Hemel Hempstead (13 miles south-west), Stevenage (5 miles north), St Albans (8 miles south-west), Bishop's Stortford (15 miles east) and Harpenden (7 miles west).
Near you in Harmer Green
We work in commercial kitchens and buildings around Danesbury Park, Monk's Walk School and The White Horse Public House. The closest station to Harmer Green is Welwyn North station, about 0.8 miles south-west of the centre. Well-known places in the area include Hertford Castle (4.9 miles south-east) and Queen Elizabeth II Hospital (3.4 miles south). For a walk, there’s Tewin Orchard and Hopkyns Wood.
Do you need ductwork cleaning in Harmer Green?
Ducts in Harmer Green gather grease for the same reasons as ducts anywhere: hours of cooking, the type of food and how well the filters are kept. Under BESA guidance, the minimum interval is 3, 6 or 12 months, by daily cooking hours.
What we’re most often called out for:
- A rancid smell from the extract duct
- Fat dripping from the ductwork
- Duct runs with no cleaning record
- An insurer asking for TR19 evidence
A hall kitchen that only cooks for events, whether near Digswell Village Church or elsewhere in Harmer Green, still needs its extract cleaned, just less often.
What your quote should include
- How they set the interval to the next visit
- Whether inaccessible sections are listed on the report
- Whether the quote is based on a survey or pictures
- Whether the whole system is included, or only the parts that are easy to reach