Hertfordshire · TR19 inspections and grease testing
Chells TR19 inspection
One call covers TR19 inspections and grease testing in Chells: survey, fixed quote, work and sign-off. Fully insured, with CHAS, SafeContractor and ISO 9001.
- Insurers asking for TR19 evidence
- Extracts that may be over the 200 micron mean
- Extracts that have never been grease tested
Landlords, agents and facilities managers
For anyone managing more than one site, we can plan visits across the whole estate and price them together. Each site gets its own report and photos, so records stay tidy.
Landlords, managing agents and facilities managers book us, not only the businesses that use the systems. Where a system serves more than one tenant, such as a shared riser, it helps to agree who arranges the work, and we can quote for the whole system.
How we handle TR19 inspection in Chells
Post-clean verification is a check carried out once the cleaning is done, with fresh grease readings, photos and a look at the areas that were cleaned. It gives you evidence of how the system was actually left. If you’re dealing with missing access panels found on survey and systems cleaned on a calendar with no measurements, we can put it right, from wet film thickness tests, insurer audits and pre-clean surveys onwards.
Around a smaller place like Chells, kitchen extracts tend to belong to pubs, cafés, takeaways and school or care home kitchens. A kitchen that cooks fewer hours still builds up grease, so cleaning is planned around how much it cooks and what the readings show.
The sign-off is always in writing: a dated report with pictures of the work, plus a certificate through the BESCA Vent Hygiene Elite portal when the work is a TR19® Grease clean. It shows what was done and what, if anything, couldn’t be reached.
- Place
- Chells (SG2, SG1)
- Wider area
- Hertfordshire
- Paperwork
- Certificate and photo report
- Quotes
- Fixed quote, typically within a working day
- Hours
- When your site is closed, plus a 24/7 line
- Telephone
- 0345 646 2711
- Updated
- 30 October 2026
Places near Chells
More services for Chells
Grease, kitchens and Chells
The FSA’s food hygiene register includes about 9 pubs, bars and clubs in and around Chells, up to about a mile and a half out. Wherever they cook, the canopy, duct and fan collect grease just as a restaurant’s do. Environmental health officers from Stevenage council inspect food businesses in Chells. The cleanliness of the kitchen and its equipment, extraction included, is part of what they check. Our report lists what was cleaned and when, which is useful to have ready. Hertfordshire Fire and Rescue Service covers Chells. 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.
Bursars and site managers at schools such as The Nobel School tend to book extract cleaning for when the kitchen is empty. Healthcare kitchens cannot easily close, so their extracts are cleaned overnight or between meal services; the nearest hospital to Chells is Lister Hospital, about 2.1 miles north-west.
Chells is about 1 mile east of Stevenage, in Hertfordshire. Chells 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. Across Hertfordshire, we cover 381 places, and Chells is one of them. You can also see our page for Milton Keynes, about 27 miles away.
Our technicians cover all of SG2 and SG1 for TR19 inspection and the roads nearby. Whether your site is on Scott Road, Eliot Road and Newton Road or a nearby road, our technicians can take on the work. We also cover the places around Chells: Stevenage (1 mile west), St Nicholas (1 mile north-west), Pin Green (1 mile west), Aston End (1 mile south-east) and Bedwell (1 mile south-west). Further out, we also cover St Albans (13 miles south-west), Bishop's Stortford (14 miles east), Welwyn Garden City (8 miles south), Harpenden (10 miles south-west), Hitchin (5 miles north-west) and Hoddesdon (13 miles south-east).
Local landmarks in Chells
Locally, jobs take us to businesses close to Lodge Farm Primary School. Chells’s nearest station is Stevenage station, roughly 1.8 miles south-west of the centre. Well-known places in the area include Lister Hospital (2.1 miles north-west) and Benington Castle (2.4 miles south-east). For a walk, there’s Pryor's Wood.
Why deal with it now?
Do not wait for an EHO visit or insurance renewal to find gaps in your extract records. A recent inspection report means you are ready when asked. Even a site near Chells that is only busy part of the week needs its system checked on a schedule.
Several systems or sites on one quote can make for a more efficient booking. Mention every system or site you need covered and we will price it together.
Why choose Duct Doctor in Chells
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Trading since 2009
- Survey first, then a fixed quote
- Evenings, overnight and weekends, plus 24/7 emergency callout
What affects the quote in Chells
Every site gets its own quote. This is what makes a difference:
- A single visit or a regular plan
- The scale of the work
- Access, including roofs, risers and ceiling voids
- When the work can happen, such as evenings, overnight or weekends
What you pay depends on how big the system is, what state it’s in and how easy it is to reach. We give you a fixed price before work begins, so you know where you stand.
Asking for a quote
To speed up the quote, please include:
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
- The paperwork from the last visit, if you have it
- The postcode and the type of business
- When the site is open and when it’s quiet
The quickest way to a quote is to send pictures: wide shots of the system, close-ups of anything that worries you and how we’d get to it. Tell us what kind of site it is and when it’s open, and many jobs can be priced from that alone.
How it works
There are three stages on the day: set-up, the treatment itself and the sign-off. Set-up means sheeting and making equipment safe, and the sign-off is a written report with pictures. The middle part takes longest, which takes around an hour or two per canopy and duct system. Because the survey comes first, a visit to Chells can typically be finished without a second trip.
- The visit is arranged for when the kitchen is not busy.
- We look over the canopy, plenum, ducts, fan and discharge.
- Grease thickness is measured at set points by WFTT or DTT.
- Photos are taken at each point, and access gaps noted.
- We send a report setting out the readings, pictures and next steps.
Before we arrive
- Mention any sign-in, permit or induction we need
- Move anything stored near the system
- Let us know how we reach the system, including roofs, risers and plant rooms
Getting a quote
To help us quote: the address, the type of site and when it’s open, a few photos and any previous report or certificate. Then phone us on 0345 646 2711 or email us.
Read more
Honest limits
In fairness, there are a few things this work won’t fix:
- A faulty or failing extract fan
- Sections with no access, until panels are fitted
- Design faults in the extract system
If in doubt, give us a ring on 0345 646 2711, or send details by email and we will say what we think before you book.
Parts of the system we cover
- Pre-clean surveys
- Post-clean checks
- Insurer audits
- Wet film thickness tests
- Access surveys
- Deposit thickness tests
Different parts, different methods
Extract fan and discharge
Grease on the fan adds to wear. The inspection shows whether it needs cleaning now.
Schools, hospitals and care homes
School and college kitchens still need their extract checked. Testing shows whether the interval suits.
Common questions in Chells
Who inspects food businesses in Chells?
That is Stevenage council, whose environmental health officers carry out food hygiene inspections in Chells. It helps to keep the extract cleaning records with your food safety paperwork, so they’re ready if asked for.
Who enforces fire safety at workplaces in Chells?
Chells is in the area of Hertfordshire Fire and Rescue Service. If a fire safety officer visits a commercial kitchen, they may ask about the fire risk assessment and how the extract is kept clean.
How far ahead should we book?
That depends on the slot you want and the size of the job. Tell us your preferred dates when you ask for a quote, and for anything urgent, ring our 24/7 emergency line.
What do you need from me for a quote?
Just the basics: the address, the site type, your opening hours and how we reach the system. Photos and any previous paperwork make it quicker. Then call 0345 646 2711 or drop us a line.
Can you inspect our extract for our insurance company?
Yes. Our TR19 audits cover readings, photos, access and a recommended cleaning interval. It’s set out for your insurer or broker.
What is post-clean verification?
After a clean, we take new readings and photos to show how the system was left. It works whoever carried out the clean.
What about areas you cannot get to?
Anything we cannot reach goes on the report, with a note of where it is, and we explain what access is needed, such as extra access panels in ductwork.
Do you offer maintenance contracts?
Yes. Scheduled maintenance plans are part of what we do, with visits at the interval your system needs. The report from each visit recommends the next date.
Common problems we fix in Chells
Insurers, fire officers and environmental health officers look to TR19® as the benchmark. It is not legislation; the legal duty comes from the Fire Safety Order 2005, under which the responsible person must reduce fire risk, and grease in the extract is part of that risk.
Look out for these warning signs:
- Missing TR19 certificates or history
- Extracts that may be over the 200 micron mean
- Systems cleaned on a calendar with no measurements
- Insurers asking for TR19 evidence
A hall kitchen that only cooks for events, whether near St Hugh & St John or elsewhere in Chells, still needs its extract cleaned, just less often.
Questions to ask before booking
- Whether a survey comes first
- If the quote is a fixed price or an estimate
- How they set the interval to the next visit
- Whether a written report and pictures are included