If you run or manage a commercial kitchen in the UK, you've probably come across the term TR19 — either from your insurer, your landlord, an Environmental Health Officer, or a contractor. But what does it actually mean, and do you genuinely need one?
The short answer: if your kitchen uses any form of cooking equipment and has an extraction system, TR19 applies to you. Here's a plain-English explanation of what the standard covers and what you need to do to comply.
What Is TR19?
TR19 is a technical reference document published by BESA — the Building Engineering Services Association, the UK's leading trade body for ventilation and engineering contractors. The full title is TR19® Grease — Specification for Kitchen Ventilation Systems.
It sets out the industry standard for:
- How commercial kitchen extraction systems should be inspected and assessed
- What cleaning methods and techniques are required at each stage of the system
- How frequently extraction systems must be cleaned based on kitchen usage type
- What documentation must be produced to demonstrate compliance
TR19 is not a piece of legislation in itself — it's a technical standard. However, it is widely referenced in commercial property leases, insurance policies, fire risk assessments, and by Environmental Health Officers and Fire Safety Officers as the accepted benchmark for extraction system maintenance in commercial kitchens.
Who Needs to Comply with TR19?
TR19 applies to any business operating a commercial kitchen with a mechanical extraction system. In practice, this means:
- Restaurants and cafés
- Pubs and bars with kitchen operations
- Hotels and serviced apartments with kitchen facilities
- Dark kitchens and ghost kitchens
- Takeaways
- Staff canteens and office kitchens with commercial cooking equipment
- Schools, hospitals, care homes, and other institutional catering operations
- Event venues and catering units
If your kitchen has a canopy or extraction hood connected to a duct system and a fan unit, TR19 applies.
What Is a TR19 Certificate?
A TR19 Certificate of Hygiene is the document issued by a qualified contractor after completing a TR19-compliant clean of your extraction system. It confirms that:
- The extraction system has been cleaned to the TR19 standard
- Grease deposits have been removed from the ductwork, canopy, and fan unit
- The system has been inspected and any defects have been recorded
- The next recommended cleaning date has been noted based on your kitchen's usage category
The certificate is typically accompanied by photographic evidence of the system before and after the clean. This documentation package is what your insurer, landlord, and any inspecting officer will request.
Why Does the TR19 Certificate Matter?
Insurance
The majority of commercial property and business insurance policies for food businesses require extraction systems to be maintained in line with TR19. This condition is often buried in the policy wording but it is there. In the event of a fire or significant claim, your insurer will ask for your TR19 certificates. If you cannot provide them — or if they show that cleaning was overdue — your claim may be rejected, even if the fire was not directly caused by a dirty extraction system.
Environmental Health Inspections
EHO visits to commercial kitchens in England and Wales are conducted under the Food Hygiene Rating Scheme. Extraction and ventilation maintenance is assessed as part of the inspection. An officer may ask to see your TR19 certificates as evidence that the system is being properly maintained. A failure to produce documentation, combined with visible grease build-up, is likely to result in a lower hygiene rating or a formal improvement notice.
Fire Safety
Under the Regulatory Reform (Fire Safety) Order 2005, the responsible person for any commercial premises must carry out a fire risk assessment and take steps to remove or reduce fire risk. Grease build-up in extraction systems is one of the most significant fire risks in any commercial kitchen environment, and TR19 compliance is the accepted means of controlling that risk. Your fire risk assessment should reference extraction cleaning frequency and your TR19 certificates should be available for inspection.
Lease Obligations
Many commercial leases for restaurant or kitchen premises include an explicit obligation to maintain extraction systems to TR19 standard. Failure to comply can be a breach of lease terms, with potential consequences including liability for reinstatement costs or landlord enforcement action.
Who Can Issue a TR19 Certificate?
A TR19 certificate is only valid when issued by a contractor with the appropriate competence and certification. Ideally, your extraction cleaning contractor should be BESA-certified — meaning they are a registered member of the Building Engineering Services Association and their work is subject to the BESA quality and compliance framework.
Fan Rescue is BESA-certified under registration HV020676. Every TR19 clean we carry out is documented with before-and-after photography, a signed certificate, and a written report noting any defects or issues identified during the clean. Our certificates are accepted by all major commercial property insurers and are valid for EHO and fire safety purposes.
Be cautious of contractors offering TR19 certificates without BESA certification or equivalent industry accreditation. A certificate from an unqualified contractor may not be accepted by your insurer in the event of a claim.
How Often Do You Need a TR19 Clean?
TR19 sets cleaning frequencies based on kitchen usage level:
- High usage (12–16 hours/day, heavy cooking equipment): every 3 months
- Medium usage (6–12 hours/day, standard mixed cooking): every 6 months
- Low usage (under 6 hours/day, light cooking): every 12 months
For a full breakdown of how usage is assessed, see our guide: How Often Does a Commercial Kitchen Need a Duct Clean?
Get Your TR19 Certificate with Fan Rescue
Fan Rescue carries out TR19-compliant extraction system cleans across London and the South East. We work with independent restaurants, hotel kitchens, multi-site restaurant groups, pub chains, and dark kitchen operators. All cleans are carried out by BESA-certified engineers, and TR19 certificates are issued on the day of the clean.
Call us on 020 3308 2936 or email office@fanrescue.co.uk for a free, no-obligation quote. We'll assess your kitchen's usage category and provide a clear quote within 24 hours.
Fan Rescue Ltd
Ability House, Unit 129, 121 Brooker Rd, Waltham Abbey EN9 1JH
Tel: 020 3308 2936 | BESA: HV020676 | F-Gas: FGAS2001890
