Greater London · TR19 inspections and grease testing

TR19 Inspection in Old Chiswick

Our technicians work in Old Chiswick on TR19 inspection. Out-of-hours visits, a fixed quote and a written report with photos on every job.

  • Systems cleaned on a calendar with no measurements
  • Missing access panels found on survey
  • Heavy grease suspected in the plenum or ducts

TR19 inspection across Old Chiswick

Part by part

Vertical risers

Risers carry the extract up through the building. Grease can drain down and pool at the bottom, so we check there.

Horizontal duct runs

Grease settles on the floor of horizontal ducts as the air cools. Readings are taken along each run through its access panels.

TR19 inspection in Old Chiswick

Think of a TR19 inspection as the diagnosis before the treatment. We look at the system, take grease readings and photograph what we find, so the clean can be planned properly. We are often asked to deal with checking the result of a recent clean and uncertainty over how often to clean, across insurer audits, wet film thickness tests and deposit thickness tests.

London kitchens are often tucked into basements or the back of a building, and the duct may run up through several floors before it discharges at the roof. For a kitchen in Old Chiswick, that typically means a longer system to clean and more access panels to plan around.

It’s worth checking any contractor’s accreditations. Ours are BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease, plus CHAS, SafeContractor and ISO 9001, and we are fully insured.

Place
Old Chiswick (W4, SW13, W6)
Region
Greater London
Reporting
TR19® certificate and photo report
Price
A fixed quote up front
When we work
Out of hours as standard, 24/7 emergency line
Phone
0345 646 2711
Reviewed
30 October 2026
The Duct Doctor team standing beside their branded white and blue vans

For landlords and multi-site operators

The Fire Safety Order 2005 puts the duty to manage fire risk on the responsible person, which may be the employer, owner, landlord, FM or managing agent. With shared responsibility, good records help everyone.

If you look after several sites, we can plan visits across the whole estate and price them together. Every building has its own written report, so records stay tidy.

Your questions about TR19 inspection in Old Chiswick

Do you work overnight in Old Chiswick?

Yes. We work evenings, overnight and at weekends. That way a site in Old Chiswick does not have to lose a day’s trading. Your opening times are the first thing we ask for.

Does London parking affect a job in Old Chiswick?

Parking and loading in London need planning, so tell us about bays, permits and building rules when you book. If the building has a loading slot system, we’ll book into it.

How long does grease testing take?

It takes an hour or two for a single kitchen, longer for a large or complex system. The visit is timed so cooking isn’t disrupted.

Which kinds of sites do you work on?

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.

How much does TR19 inspection cost?

There’s no set price, as it depends on the job: how big it is, what state it’s in, how we reach it and the working hours. We fix the price before any work starts.

Is TR19 cleaning the law?

No. TR19® is a specification, not a statute. In practice, an insurer can refuse or reduce a claim without proof of TR19 cleaning, so it matters in practice.

What does TR19 mean?

TR19® is BESA’s specification for ventilation hygiene. TR19® Grease, a standalone specification since 2019, covers grease in kitchen extract systems, and TR19® Air covers general supply and extract systems.

Do you have a 24/7 line?

Yes. If something urgent happens, like a fan failing or damage after a fire, call our 24/7 line and we will talk you through the next steps.

What staff can safely do

For ventilation and air handling systems, in-house care is mostly about checks: clear grilles, a log of filter changes and reporting anything odd. Cleaning inside ducts and units is specialist work.

In-house cleaning and specialist cleaning do different jobs. 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. That part needs specialist access and equipment.

Fixed quotes for TR19 inspection in Old Chiswick

You’ll get a fixed price before work begins. It’s based on:

  • Site requirements such as sign-in and permits
  • The times the site is available
  • Travel, parking and unloading
  • Whether several sites go on one quote

The price reflects the work, not guesswork. That is why we survey first, from photos or on site, and the price is agreed before any work starts.

What to send for a quote

Many jobs can be priced from pictures and some basics. Useful things to send:

  • Problems your staff have spotted
  • Detail shots of panels, filters and grilles
  • The roof, plant room or outside wall the system runs to
  • Photos showing the whole system and its surroundings

Some systems can be priced from photos; others need a survey. Larger sites, and anything hidden behind walls, ceilings or floors, are normally surveyed first. Either way, the quote is fixed before any work is booked.

TR19 inspection around Old Chiswick

The FSA’s food hygiene register shows about 474 restaurants, cafés and canteens and about 94 takeaways across Old Chiswick and its immediate surroundings (about a mile and a half). A WFTT or DTT reading tells each of those kitchens whether its grease is staying under the 200-micron mean. Food hygiene inspections in Old Chiswick are the job of Hounslow council’s environmental health team. A greasy canopy or dripping filters are the sort of thing an inspection can pick up. A TR19® certificate and photo report after each clean gives you a record to show an inspector. Overnight is the normal time to clean a London kitchen extract, so trading is not affected.

Kitchens that cook twelve hours or more a day, as some healthcare kitchens do, fall into BESA’s three-monthly minimum; West London Hospital is the nearest hospital to Old Chiswick, about 1.3 miles east. For schools such as The William Hogarth Primary School, kitchen extract cleaning is normally booked for the holidays, when the canteen is closed. If you run a café or takeaway near Chiswick station, early starts and late finishes leave little time to clean, so overnight extract cleaning suits.

Old Chiswick is about 2 miles south of Acton, in Greater London. We provide TR19 inspection for businesses, landlords and public buildings in Old Chiswick and the rest of Greater London. 764 places in Greater London are on our list, from busy centres to quieter spots. We also work in London, about 7 miles from Old Chiswick.

Work in W4, SW13 and W6 is surveyed, quoted and booked the same way as anywhere else. We cover sites on Short Road, Quick Road and Paxton Road and the roads around them. We also cover the places around Old Chiswick: Turnham Green (1 mile west), Chiswick (1 mile north-west), Grove Park (1 mile west), Barnes (1 mile south) and Hammersmith (1 mile north-east). We also work in nearby towns such as London (7 miles east), City of Westminster (5 miles north-east), Marylebone (5 miles north-east), St Pancras (6 miles north-east), Shoreditch (8 miles east) and Walthamstow (12 miles north-east).

Near you in Old Chiswick

Around Old Chiswick, our work takes us to kitchens and buildings near George and Devonshire pub, The Swedish School and Polish Library POSK in London. Other local landmarks include Turnham Green (0.8 miles north-west) and Chiswick School (0.5 miles south-west). For rail, the closest station is Chiswick station, about 0.8 miles south-west of the centre. Well-known places in the area include Kurdish Museum Library and Archive (0.7 miles north-east) and West London Hospital (1.3 miles east). Open spaces near Old Chiswick include Campden Hill and Kew Gardens Lake.

Map of Old Chiswick © OpenStreetMap contributors

Looking after it afterwards

Think of this as the after-treatment advice, short and simple:

  • Do not box in or cover duct access panels
  • Report grease dripping from the canopy
  • File every inspection report with your certificates
  • Have the latest report ready for insurance renewals

You get a report with the grease readings, where they were taken and photos of each point. File it alongside your TR19 certificates.

Test grease regularly instead of relying on the calendar. It shows if build-up is speeding up.

What happens on the day

There are three stages on the day: getting the area ready, doing the work and signing it off. Getting ready means protecting surfaces and switching off what needs to be off, and the sign-off is a written report with pictures. The middle part takes longest, which takes a couple of hours for a typical kitchen extract system. Security desks and permits-to-work are routine in London, so let us know what your building in Old Chiswick needs from us.

  1. We agree a time when the kitchen is closed or quiet.
  2. The system is checked from canopy to discharge.
  3. We take WFTT or DTT readings at set points along the system.
  4. We photograph the test points and record any sections we cannot reach.
  5. We send a report setting out the readings, pictures and next steps.

How to prepare

  • Move anything stored near the system
  • Allow time for equipment near the work to be turned off and cool down
  • Tell us the best time to work, such as after service or at a weekend

Get a fixed quote

Here’s what helps us quote: the address, the type of site and when it’s open, a few pictures and any previous report or certificate. Once you have those, give us a ring on 0345 646 2711, or email photos.

Get a price

Related advice

Why it’s worth doing now in Old Chiswick

Skipping grease testing leaves the cleaning interval to guesswork. If grease reaches 500 microns anywhere, TR19® Grease calls for immediate spot cleaning, which you won’t know without measuring. In Old Chiswick, as across London, ductwork often passes through shared risers and other people’s space.

When the work has to happen, how we reach it and how big the site is all affect the cost. We take each of them into account, and the price is fixed before work begins.

What you get with us

  • Member of BESCA Vent Hygiene Elite, cleaning to BESA TR19® Grease
  • Survey first, then a fixed quote
  • Trading since 2009
  • A written report with photos after every visit

Take a look at how cleaning jobs are priced and our accreditations and certificates.

BESCA Vent Hygiene EliteMember, cleaning to BESA TR19® Grease
CHAS · SafeContractorISO 9001 and fully insured
Certificate and photo reportWith every clean
24/7 emergency calloutEvenings, nights and weekends
Since 2009South East England and London