Hertfordshire · TR19 inspections and grease testing
TR19 inspections in Marsworth
For TR19 inspection in Marsworth, one call is all it takes: survey, fixed quote, work and sign-off. Fully insured, with CHAS, SafeContractor and ISO 9001.
- Systems cleaned on a calendar with no measurements
- Pre-clean surveys before a first TR19 clean
- Heavy grease suspected in the plenum or ducts
Different parts, different methods
Schools, hospitals and care homes
We fit testing around service times and school holidays to avoid disruption.
Horizontal duct runs
Bends and long runs can hold heavy deposits, out of sight of the kitchen.
TR19 inspection in Marsworth, done properly
Many insurers ask for proof that kitchen extract systems are cleaned and inspected to TR19®. Missing records can lead to a claim being reduced or refused. A TR19 audit sets out the system’s condition, with readings and pictures, for sites in Marsworth and the rest of Hertfordshire. If you have missing access panels found on survey and kitchens whose menu or hours have changed, we can help, from wet film thickness tests, deposit thickness tests and insurer audits onwards.
Work in a small place like Marsworth starts with a call to agree access and timings, and the clean itself is the same full TR19® job as in any town: canopy, filters, duct, fan and discharge, with a certificate and photo report at the end.
We have been trading since 2009, and we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. CHAS, SafeContractor and ISO 9001 are in place too, and we are fully insured.
- Where
- Marsworth (HP23)
- Region
- Hertfordshire
- Paperwork
- Certificate and photo report
- Price
- A fixed quote up front
- Working hours
- When your site is closed, plus a 24/7 line
- Call
- 0345 646 2711
- Page updated
- 30 October 2026
When something else is needed
TR19 inspection can’t fix everything, and we’ll tell you before work begins. It doesn’t solve:
- Design faults in the extract system
- Mechanical faults in the extract
- Heavy deposits found on test, which still need cleaning
Not sure which it is? You can call 0345 646 2711 or send us an email and we will tell you honestly before you book.
Where we work
- Insurer audits
- Wet film thickness tests
- Access surveys
- Post-clean checks
- Pre-clean surveys
- Deposit thickness tests
In-house cleaning or a specialist?
Keep a record of what your team does. A dated log of in-house cleaning and checks shows an inspector that the system is looked after between visits, alongside our reports.
Some jobs should never be done in-house: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease need training, the right equipment and safe access. Leave those to us.
Between visits
Results last longer with the right care. We suggest:
- Send TR19 audit reports to your insurer on request
- Never cook with filters missing
- Mention new equipment or longer hours at the next test
- Keep TR19 certificates, readings and reports together
The report recommends when the system should next be cleaned and tested, from the measured grease and the kitchen’s hours.
Keep certificates, reports and readings in one place so you can produce them quickly.
Signs you need TR19 inspection in Marsworth
Not every section of a kitchen extract is easy to get to, and grease can be missed there clean after clean. An inspection of a system in Marsworth shows where access panels are missing, so panels can be fitted.
Look out for any of the following:
- Kitchens taken over with no cleaning records
- Confirming a clean reached the whole system
- Heavy grease suspected in the plenum or ducts
- Kitchen extract systems with no recent grease readings
Church and community hall kitchens, near Church of All Saints or anywhere around Marsworth, are easy to forget, but their extracts collect grease like any other.
Comparing quotes
- Whether they recommend a next date
- When they can work, and whether that’s outside your opening hours
- Their accreditations, such as BESCA Vent Hygiene Elite, CHAS or SafeContractor
- Whether the quote is based on a survey or photos
Marsworth questions
Can you work in Marsworth outside opening hours?
Yes, evening, overnight and weekend work is normal for us. The work in Marsworth can fit around your hours. Just phone us on 0345 646 2711, or email photos with your opening times and we’ll plan around them.
Who is the fire and rescue service for Marsworth?
Fire safety enforcement in Marsworth is handled by Hertfordshire Fire and Rescue Service. A recent cleaning certificate and a note of the next clean date show that grease in the extract is being managed.
Do you offer emergency callouts?
Yes, day and night, every day of the year. Office hours are Monday to Friday, 8am to 6pm, and the emergency line covers the rest.
What types of premises do you cover?
Any site with a kitchen or a ventilation system to look after, from a small pub to a hospital. We work with hotels, schools, care homes, offices, retail and leisure sites.
Is TR19 a legal requirement?
No. TR19® is a specification, not a statute. Without TR19 records, an insurance claim can be reduced or refused, so following it is the sensible course.
Do you look at the system first?
Yes, every time. We diagnose before we treat: the survey tells us what the system needs and how to reach it, and the quote is based on that.
Why survey before a clean?
We survey, measure and photograph the system first. The survey can be done from pictures and details or on site, whichever suits the system.
What does TR19 mean?
TR19® is BESA’s specification for ventilation hygiene. Since 2019, TR19® Grease has been a standalone specification for grease in kitchen extract systems, while TR19® Air covers other supply and extract ductwork.
Grease, kitchens and Marsworth
Food Standards Agency records list about 8 restaurants, cafés and works canteens and about 4 takeaways and sandwich shops in and around Marsworth, up to about a mile and a half out. Kitchens like these cook for very different hours, and grease testing shows which extracts need cleaning soonest. Food hygiene inspections in Marsworth are the job of Buckinghamshire council’s environmental health team. Extraction counts as kitchen equipment, so its condition can come up on the day. Our report lists what was cleaned and when, which is useful to have ready. Fire safety in Marsworth falls to Hertfordshire Fire and Rescue Service. Its fire safety officers can audit commercial kitchens, and grease in the extract is part of a kitchen’s fire risk.
Older buildings often hide long, awkward duct runs, and if you run a kitchen at a historic venue in the area (Cholesbury Manor House is about 4.6 miles south), access may need planning. For schools such as Marsworth Church of England Infant School, kitchen extract cleaning is typically booked for the holidays, when the canteen is closed.
Marsworth is about 6 miles north-west of Berkhamsted, in Hertfordshire. Whatever kind of site you run in Marsworth, we can take on TR19 inspection. Visits can be booked for evenings, overnight or weekends so trading is not interrupted. We cover 381 places across Hertfordshire, from busy centres to quieter spots. For sites nearby, see our Milton Keynes page, about 16 miles away.
Postcode districts we cover here for TR19 inspection: HP23. If you need TR19 inspection at premises on Vicarage Road, Lukes Lea and Church Lane or anywhere close by, our technicians can take on the work. Nearby, we also carry out TR19 inspection in Startop's End (1 mile south-west), Tringford (1 mile south), Bulbourne (1 mile south-east), Wilstone (1 mile west) and Gubblecote (1 mile north-west). Larger places within reach include Hemel Hempstead (10 miles south-east), St Albans (15 miles east), Harpenden (14 miles east), Berkhamsted (6 miles south-east), Rickmansworth (15 miles south-east) and Chorleywood (14 miles south-east).
Near you in Marsworth
Around Marsworth, our work takes us to kitchens and buildings near Tring School and The White Lion pub. The closest station to Marsworth is Tring station, about 2.4 miles south-east of the centre. Nearby you’ll also find Tindal Centre (5.9 miles west) and Pitstone Green Museum (1.3 miles north-east). The countryside around Marsworth includes College Lake nature reserve and Ivinghoe Beacon.
Places near Marsworth
More services for Marsworth
How it works
There’s very little for your team to do on the day. A contact on site lets us in at the agreed time and points us to the system, and the rest is down to us. Afterwards, the area is left tidy and the written report follows. For a village or hamlet like Marsworth, tell us about narrow lanes, gates and parking when you book.
- After the clean, we arrange a time to check the system.
- We open the access points used on the clean.
- We repeat the WFTT or DTT readings.
- Photos are taken to show the condition after the clean.
- We report the findings and flag any areas that need more work.
Preparing for the visit
- Have your last certificate or report to hand
- Clear loose items from the work area
- Name a contact who can let us in at the agreed time
How to get a quote
Quotes are quick. Send a few details and photos, and we typically reply with a fixed quote within one working day. Where a survey is needed, we arrange a time that suits the site.
Read more
Why deal with it now?
If there’s a fire or a claim, your insurer may ask for TR19 records. Without them, a claim can be reduced or refused. An up-to-date inspection report is a good place to start. Equipment tucked in a roof space or outbuilding near Marsworth rarely gets looked at unless someone books it.
Leaving it longer rarely makes the work cheaper. Build-up, wear and faults tend to get worse, not better, and a neglected system can mean more work. If you’re not sure what’s needed, call 0345 646 2711 or drop us a line and we will give you an honest view and a fixed quote.
Why choose Duct Doctor in Marsworth
- CHAS, SafeContractor and ISO 9001
- Work around your opening hours, with 24/7 emergency cover
- A written report with pictures after every visit
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease