Compliance

Information about the  BESA TR19®

The BESA TR19® standards serve as the industry benchmark for the cleaning and maintenance of ventilation systems. Adhering to these standards is essential for ensuring indoor air quality and, most critically, fire safety within your facility.


The regulations are divided into two primary categories:

TR19® Grease

This focus area is dedicated to removing hazardous grease buildup in commercial kitchen extraction systems. To maintain compliance, grease levels must not exceed a mean of 200 microns between scheduled cleanings.

TR19® Air

This ensures that general ventilation ductwork complies with BS EN 15780, maintaining healthy air quality standards, particularly in high-risk environments.

To meet legal obligations under the Regulatory Reform (Fire Safety) Order 2005 and satisfy insurance requirements, kitchen extract systems must be cleaned at specific intervals based on usage:

Heavy use (12–16 hours/day): Every 3 months.

Moderate use (6–12 hours/day): Every 6 months.

Light use (2–6 hours/day): Every 12 months.

A vital component of our service is post-clean verification. We provide full documentation, including photographic evidence and “before and after” measurements, to confirm that your system is fully compliant.
Get in touch with us to schedule an inspection or discuss a maintenance plan tailored to your specific requirements.

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Frequently Asked Questions

Specialist solutions designed for high-stakes environments where air quality and compliance are non-negotiable.

Yes. For a full professional deep clean, you must close your restaurant to allow technicians to use heavy chemicals, reach restricted areas, and safely clean ventilation hoods. For daily or weekly maintenance, cleaning can be done during overnight hours without disrupting service. However we widely perform air filter replacements near London and Kent without interfering with business.

For commercial kitchen range hood filters, the industry gold standard is the stainless steel baffle filter. For HVAC systems conditioning the kitchen, the best setup is a combination of a pleated and bag filter paired with inline Activated Carbon (Charcoal) filters to capture volatile organic compounds (VOCs) and odours. Additionally and Electrostatic Precipitator (ESP) to mitigate the smoke element.

Yes, of course we will. We offer maintenance work and air filter replacement near London, even for equipment that we did not install. Feel free to contact us no matter what type of range hood or HVAC system you have-we will service it.

In a busy commercial kitchen, daily cleaning of metal baffle filters takes about 15 to 20 minutes of hands-on time per shift, with a standard full professional hood and exhaust system clean taking 3 to 5 hours. Standard replacement of charcoal filters is required every 3 to 6 months.

You must clean your HVAC and range hood filters at regular intervals—at least once every month. However, if you are looking to DIY, it is essential that you are proficient in understanding the manufacturer’s guidelines as well as the TR19 guidelines for air filter replacement near London.

Replacing your HVAC and range hood filters improves indoor air quality and prevents fire hazards or equipment damage. Both procedures are simple DIY tasks that require locating the filter, removing the old one, and sliding in the replacement.

To begin with, if you don’t change your filter regularly, it will block airflow in your commercial kitchen, increasing smoke while working. While cleaning your filter can offer a temporary solution, if the component is not working properly, the oil in the smoke will turn into sticky grease that will stick to the walls, ceiling, and floor. Being unsightly is not the only problem with black grease; this deposit is also inflammable. So not changing your filters can end up increasing the risk of fire hazards.

We recommend that you open, clean and inspect all the filters in your HVAC and range hood. While greasy cloggings are easily detectable, you also need to hold the panels in light to see if any residual debris is trapped there. Even after cleaning, if the light still obstructs, then it is time to get it professionally checked or go for a replacement.

We often visit restaurants and commercial properties for HVAC or range hood air filter replacement in Kent, London and many other locations where people follow the recommended timeline for changing the component and continue using the filters even if they need changing. You must regularly check your filters for excess grease buildup. Different kitchens.

To speak of the busiest kitchens in full-fledged restaurants and catering services, we typically offer air filter replacement near London in 8 to 15 months. Therefore, the frequency may vary from once a year to every few weeks. We must emphasise the importance of regularly having your filters cleaned and inspected by an expert to ensure their performance and know when to change them.