Grease build-up inside commercial kitchen extract ductwork is one of the leading causes of serious kitchen fires in the UK. Regular, documented cleaning is not just best practice — it is a requirement under your fire insurance policy and the Regulatory Reform (Fire Safety) Order 2005.
NOS BSEHV11 qualified technicians — the National Occupational Standard for ventilation hygiene, the recognised benchmark for this specialist work.
BESA TR19 Grease compliant — we follow the BESA Technical Specification TR19 Grease methodology, the standard referenced by insurers and fire risk assessors.
NAADUK approved — approved members of the National Association of Air Duct Specialists UK.
Licensed to self-certify — we hold the required ventilation licence to legally self-certify completed work, providing full documentation including pre/post photos and a signed completion certificate.
Full system coverage — canopies, ductwork, fans, and all accessible components cleaned to the required standard.
Access door assessment — we identify any access shortfalls and can supply and install access doors where required.
Cleaning frequency is determined by TR19 and NAADUK guidelines — typically every 6 or 12 months depending on cooking volume and fuel type.
Frequently Asked Questions
How often should commercial kitchen grease ducts be cleaned?
Frequency is determined by a TR19 and NAADUK guidelines based on cooking type and volume. Heavy-use fryer kitchens typically require cleaning every 6 months; lighter-use kitchens may need it annually. ConAir can advise on the correct frequency for your setup.
What is BESA TR19 and why does it matter?
BESA TR19 is the industry technical specification that sets out how commercial kitchen extract and ventilation systems should be cleaned and inspected. It is referenced by insurers and fire risk assessors, and a TR19-compliant clean with full documentation is the standard required to maintain fire insurance cover.
Do you provide a certificate on completion?
Yes. As licensed ventilation hygiene contractors, we are authorised to self-certify our work. On completion we provide a signed certificate, pre and post-clean photographs, and a full written report — the documentation your insurer and fire risk assessor will require.
Do you cover Bristol and North Somerset?
Yes. We cover Bristol, Weston-super-Mare, and the wider Bristol & Somerset region including Bridgwater, Taunton, Clevedon, Nailsea, and Burnham-on-Sea.