Hertfordshire · TR19 inspections and grease testing
TR19 inspections and grease testing in Letchworth, Hertfordshire
TR19 inspection across Letchworth and nearby, booked around your opening hours and finished with a written report and pictures.
- Checking the result of a recent clean
- Ductwork where grease may be over the TR19 limits
- Insurers asking for TR19 evidence
Looking after it afterwards
Once we’ve finished, these simple steps help:
- Do not box in or cover duct access panels
- Keep to the recommended interval
- Keep TR19 certificates, readings and reports together
- Keep canopy edges and gutters wiped down
The report recommends when the system should next be cleaned and tested, from the measured grease and the kitchen’s hours.
Fit access panels where the survey finds sections can’t be reached, so every part of the duct can be cleaned.
How we handle TR19 inspection in Letchworth
Post-clean verification is a check carried out once the cleaning is done, with fresh grease readings, pictures and a look at the areas that were cleaned. It gives you evidence of how the system was actually left. If you have heavy grease suspected in the plenum or ducts and insurers asking for TR19 evidence, we can put it right, from deposit thickness tests, wet film thickness tests and access surveys onwards.
Kitchens in towns like Letchworth are often in older buildings that were never designed for them, which can mean awkward duct routes, long flat runs and not enough access panels. Where the duct cannot be reached, new panels can be fitted, and anything left uncleaned is recorded on the report.
Think of the report as the system’s health record: dated, with photos, and showing what was done. For TR19® Grease cleans, the certificate comes through the BESCA Vent Hygiene Elite portal and sits alongside the report.
- Place
- Letchworth (SG6)
- Region
- Hertfordshire
- Records
- Certificate and photo report
- Quote
- A fixed quote up front
- Working hours
- After hours by arrangement; emergencies any time
- Call
- 0345 646 2711
- Checked
- 30 October 2026
Managing agents and facilities teams in Letchworth
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 pictures, so each one has its own record.
Whether it’s one building or many, the standard is the same: diagnosis, a fixed price, work booked around your hours and a written report with pictures.
Towns and villages near Letchworth
More services for Letchworth
Kitchen extracts in Letchworth
Food Standards Agency records include about 22 pubs, bars and clubs and about 3 hotels and guest houses in and around Letchworth, up to about a mile and a half out. A pub or hotel kitchen that cooks every day builds up grease in its extract like any other. Letchworth sits within the area of 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 Letchworth. A greasy canopy or dripping filters are the sort of thing an inspection can pick up. A dated certificate in the maintenance file answers the question before it’s asked.
School kitchens, at schools like Hillshott Infant School and Nursery for example, are typically cleaned in the holidays so no lunches are lost. If you run a church or community hall kitchen, near Church of St Paul or elsewhere in Letchworth, its extract still collects grease from every lunch and event. Kitchens that cook twelve hours or more a day, as some healthcare kitchens do, fall into BESA’s three-monthly minimum; Fairfield Hospital is the nearest hospital to Letchworth, about 1.9 miles north-west.
Letchworth is about 5 miles north of Stevenage, in Hertfordshire. Letchworth gets the same approach as every site we work on: a survey first, a fixed quote, work timed around your hours and a report with photos. Letchworth is one of 381 towns, villages and districts in Hertfordshire we cover for TR19 inspection. Milton Keynes is in our area too, around 24 miles away.
Postcode districts we cover here for TR19 inspection: SG6. That includes premises on Station Road, Willian Church Road and Rowland Way and the roads around them. Main roads around Letchworth include the A505 and B656, so getting to you is simple for TR19 inspection. Other places close to Letchworth include Letchworth Garden City (1 mile west), Norton (1 mile north-east), Willian (1 mile south), Walsworth (2 miles south-west) and Poets Estate (2 miles south-west). Further out, we also cover Stevenage (5 miles south), Welwyn Garden City (12 miles south), Harpenden (12 miles south-west), Hitchin (3 miles south-west), Hatfield (15 miles south) and Hertford (14 miles south-east).
What’s near Letchworth
Typical jobs here are in premises near Norton School, The Highfield School and Three Magnets pub. There’s a railway station in Letchworth itself: Letchworth Garden City station. A little further out are Fairfield Hospital (1.9 miles north-west) and First Garden City Heritage Museum (under half a mile south). Not far away are Purwell Ninesprings.
Common questions in Letchworth
Who is the fire and rescue service for Letchworth?
That is Hertfordshire Fire and Rescue Service. It’s worth keeping your fire risk assessment, TR19® certificates and photo reports together, ready to show.
Which environmental health team covers Letchworth?
The local authority for Letchworth is North Hertfordshire council, and its environmental health team does the inspecting. Ratings are published by the Food Standards Agency, so a clean extract and good records are worth keeping up.
What should I send you?
A short description and a few photos plus the address and your hours. We’ll ask for anything else we need.
What is a WFTT or DTT grease test?
Readings are taken using the Wet Film Thickness Test or the Deposit Thickness Test, and set against the TR19® Grease figures.
Is there a survey before the work?
Yes. Photos often do the job, and larger or hidden systems get a visit.
Is TR19 cleaning the law?
No. It’s the benchmark rather than the law. In practice, an insurer can refuse or reduce a claim without proof of TR19 cleaning, so it matters in practice.
What is TR19?
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.
What does a pre-clean survey involve?
We look at the system from canopy to discharge, take grease readings and check access. It lets us plan the clean and give you a fixed quote.
Why act early in Letchworth
Without readings, you’re guessing when to clean. Any reading of 500 microns or more needs immediate spot cleaning under TR19® Grease, which you won’t know without measuring. Each month of use adds to the build-up, so a site in Letchworth is better off booking it now.
Every site is different, so each one gets its own fixed quote. Size, access, the condition of the system and when we can work all make a difference.
Why Letchworth businesses choose us
- Full insurance on every job
- In business since 2009
- A fixed price before any work starts
- Work around your opening hours, with 24/7 emergency cover
Read what affects the cost or our accreditations and certificates.
What staff can safely do
Staff cleaning and specialist work aren’t the same thing. Wiping filters daily and washing them weekly keeps the visible parts in order, but they do not reach the grease that builds up further in. Reaching it takes a specialist with the right equipment.
Some jobs should never be done in-house: entering ducts, working on fans, testing dampers and taking grease readings call for the right kit, training and safe access. Leave those to us.
What a clean will not put right
We’d rather tell you now than book work that will not help, so these are the things it will not cover:
- Installation problems, which fall under design guidance such as DW172
- Hidden runs that need access panels first
- Heavy deposits found on test, which still need cleaning
If in doubt, give us a ring on 0345 646 2711 or email us and we’ll say what we think.
What we work on in Letchworth
- Access surveys
- Wet film thickness tests
- Insurer audits
- Deposit thickness tests
- Post-clean checks
- Pre-clean surveys
Different parts, different methods
Canopy and plenum
We look over the canopy, inside and out, with readings where grease collects.
Restaurants, pubs and hotels
We test between services, early in the morning or after close so the kitchen keeps cooking.
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. A closed day, an evening or an early start: whichever suits your site in Letchworth, we will book around it.
- We go through any past certificates and reports.
- We follow the extract from canopy to discharge.
- We note where access panels are and where more are needed.
- We measure the grease and photograph each point.
- We report back with readings and a fixed quote.
Getting ready for the visit
- Tell us where we can park and unload
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
- Clear loose items from the work area
Ask for a quote
If you need TR19 inspection in Letchworth, ring 0345 646 2711 or email us. Let us know the site type and the opening hours, and send photos or your last report if you can. A fixed quote normally follows within one working day.