Hertfordshire · Kitchen extract cleaning
Kitchen Extract Cleaning in Harmer Green
One call covers kitchen extract cleaning in Harmer Green: survey, fixed quote, work and sign-off. Fully insured, with CHAS, SafeContractor and ISO 9001.
- Grease drips onto cooking equipment
- Missing paperwork after a change of operator
- Stale cooking odours from the system
About our kitchen extract cleaning in Harmer Green
Duct Doctor has been cleaning kitchen extract systems since 2009. As a BESCA Vent Hygiene Elite member, we clean to BESA TR19® Grease, and we are fully insured, with CHAS, SafeContractor and ISO 9001. The work covers discharge points, plenums and filters and horizontal duct runs, and common reasons people get in touch are extraction mentioned at an environmental health visit and grease drips onto cooking equipment. Extraction cleaning, hood cleaning and TR19 duct cleaning all end up in the same place: a clean that goes past the canopy into the duct and fan, backed by a certificate.
A clean in Harmer Green covers the canopy, plenum, filters, ductwork, risers and fan, and the discharge where it can be reached.
For a kitchen in or near Harmer Green, the visit is planned around opening hours and the journey, and the clean covers the whole system, as it would anywhere: canopy to discharge, then a TR19® certificate and a photo report.
It’s worth checking any contractor’s accreditations. We are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we hold CHAS, SafeContractor and ISO 9001, and we are fully insured.
- Location
- Harmer Green (AL6)
- Region
- Hertfordshire
- Reporting
- TR19® certificate and photo report
- Price
- Fixed quote, normally within a working day
- When we work
- Overnight and weekend work, 24/7 emergency callout
- Telephone
- 0345 646 2711
- Checked
- 30 October 2026
How it works
Our technicians bring everything the work needs, including protection sheets, the right tools and access kit. You only need to give us clear access and switch off what needs to be off. On site, the work takes a few hours for a small kitchen, longer for a large system. Rural roads and tight entrances are worth telling us about before a visit to Harmer Green.
- First the diagnosis: a survey of the whole system and its access points.
- Grease readings set the baseline, and a fixed quote follows.
- After the kitchen closes, we sheet the area and set up to contain grease and water.
- Heavy deposits are scraped by hand and the system degreased to TR19® Grease.
- Then the clean bill of health: readings, a TR19 certificate and a photo report with the next date.
How to prepare
- Move anything stored near the system
- Find the previous report, if there is one
- Mention any parking or loading restrictions
Get a fixed quote
Photos are enough for some jobs, while others need a look on site. Big or complicated sites, and systems that are hard to see in pictures, get a survey first. Either way, the quote is fixed before any work is booked.
Related advice
Between visits
To keep the system working properly between visits:
- Refit filters properly after cleaning
- Tell us when the extract starts to drip or smell
- File each certificate with the fire risk assessment
- Book the next clean before the date on the report
If we couldn’t get into part of the duct, the report says so plainly. That is part of an honest TR19 clean, not a failing, and new access panels can be fitted so the next clean covers it.
Tell whoever looks after the system when something changes. Drips, odours and fan noise often mean grease is building, and a grease thickness test can confirm it.
In-house cleaning or a specialist?
A few tasks are always specialist work: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease call for the right kit, training and safe access. Leave those to us.
Away from the kitchen, the in-house job is mainly checking: clear grilles, a log of filter changes and reporting anything odd. Cleaning inside ducts and units is specialist work.
What the work involves, part by part
Extract fan and discharge
At the end of the system is the discharge, and grease can collect there too. It’s cleaned as far as safe access allows, and any limits are recorded.
Ductwork and risers
Grease builds up most where the duct turns. Those are among the points where we take readings before and after, so the report shows the difference.
What we are called out for in Harmer Green
It’s common for parts of a duct to have been missed for years. The usual reason is a lack of access panels, so nobody could get to them. That hidden grease keeps building where nobody looks.
What we are most often called out for:
- Proof of cleaning requested by an insurer
- Grease drips onto cooking equipment
- Stale cooking odours from the system
- An extract that has never been cleaned to TR19
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.
Questions to ask before booking
- Proof of insurance
- Whether inaccessible sections are listed on the report
- When they can work, and whether that’s outside your opening hours
- What records you will receive afterwards
Kitchen extract cleaning in Harmer Green: the local picture
The FSA’s food hygiene register shows about 14 cafés, restaurants and staff canteens in and around Harmer Green, up to about a mile and a half out. Those that fry, grill or roast under a canopy need their extracts cleaned at intervals set by how long they cook. Food hygiene inspections in Harmer Green are the job of East Hertfordshire council’s environmental health team. A greasy canopy or dripping filters are the sort of thing an inspection can pick up. Keeping each certificate and photo report on file helps show the extract is looked after. Hertfordshire Fire and Rescue Service covers Harmer Green. Grease in a kitchen extract is a recognised fire risk, and the fire authority enforces the law on managing it in most commercial premises.
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. Harmer Green gets the same approach as every site we work on: diagnosis first, a fixed price, out-of-hours working where needed and a written report with pictures. Harmer Green is one of 381 towns, villages and districts in Hertfordshire where we work for kitchen extract cleaning. Our London page covers sites nearby, about 23 miles away.
Here we cover the AL6 postcode area for kitchen extract cleaning. Neighbouring places we cover for kitchen extract 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
Around Harmer Green, our work takes us to kitchens and buildings near Danesbury Park, Monk's Walk School and The White Horse Public House, among other places. The closest station to Harmer Green is Welwyn North station, roughly 0.8 miles south-west. Nearby you’ll also find Hertford Castle (4.9 miles south-east) and Queen Elizabeth II Hospital (3.4 miles south). The countryside around Harmer Green includes Tewin Orchard and Hopkyns Wood.
Questions from Harmer Green
Who would carry out a food hygiene inspection at a kitchen in Harmer Green?
In Harmer Green, it’s East Hertfordshire council that carries out food hygiene inspections. Have your latest TR19® certificate and photo report to hand, as an officer may ask how the extract is maintained.
Can you come to Harmer Green after we close?
Yes, we can come after you close and finish before you open. That way a site in Harmer Green does not have to lose a day’s trading. Your opening times are the first thing we ask for.
Does the law say I must clean to TR19?
TR19® is BESA’s specification, not legislation. Under the Fire Safety Order 2005, the responsible person must assess and reduce fire risk, and cleaning to TR19 is the recognised way to show you’ve dealt with extract grease.
Which sectors do you work in?
Any commercial site with kitchens or ventilation, from a small pub to a hospital. Hotels, schools, care homes, offices, shops and leisure sites are all part of our work.
How far ahead should we book?
For planned work, earlier is better, especially if the next clean or test is due soon. For emergencies, we take calls 24/7.
Do you have a 24/7 line?
Yes. Our emergency line runs 24/7 for anything that can’t wait until a planned visit. Call us any time and explain what’s happened.
What does a TR19 kitchen extract clean include?
A TR19 Grease clean covers the full extract route, not just the canopy. That means canopy, plenum, filters, ducts, risers, fan and discharge, reached through access panels where needed.
What do you need from me for a quote?
The site address, the type of premises and your opening hours, along with a few pictures and any previous report.
For landlords and multi-site operators
Managing agents often deal with us directly. Tell us the site, the work and the access arrangements, and we’ll send a fixed quote.
From a single site to a large estate, you get the same standard: the system surveyed, the price fixed, the visit fitted around trading and everything written up afterwards.
Nearby places to Harmer Green
What else we do in Harmer Green
Why act early in Harmer Green
An overdue clean in Harmer Green is best dealt with now rather than after the next inspection. The job takes a few hours for a small kitchen, longer for a large system, and we work evenings, overnight and weekends so you do not lose a service. Every extra month adds grease. A planned visit to Harmer Green is easier to arrange than an emergency callout.
A single site or a whole portfolio, the quote is built the same way: what needs doing, how we get to it and when. You’ll have a fixed price before work begins.
Why us?
- Fixed quotes, normally within one working day
- CHAS, SafeContractor and ISO 9001
- We are fully insured
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
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