Clean ductwork, like the grease was never there.
Kitchen extract and duct cleaning specialists. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, fully insured and fully documented, so fire risk, inspections and insurance are covered.
Compliant duct cleaning you can rely on
Grease, oil and debris build up inside every commercial kitchen extract system. Left alone, that grease is fuel for a fire that can spread through the ductwork, and it’s a reason an insurer can refuse or reduce a claim.
We clean canopies, plenums, filters, ductwork, risers and fans back to bare metal to BESA TR19® Grease, working around your hours, and we leave the kitchen clean and ready to use. You get a certificate and a photo report every time.
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Find your sector
We clean, test and certify extract systems across every kind of commercial kitchen and building.
The Duct Doctor way
We treat ductwork like a check-up: diagnose it, treat it, and sign it off with a clean bill of health. Every job is surveyed first, cleaned thoroughly, and backed by before-and-after photos and a certificate.
One team covering London and the South East since 2009, the same standards on every site, and a single number to call, whether you have one kitchen or fifty.
About Duct DoctorThe full extract system, to TR19®
Canopies & hoods
Degreased back to bare metal, inside and out.
Ductwork & risers
Horizontal runs and risers, the full length.
Extract fans
Blades and housings cleaned, fans checked and repaired.
Grease filters
Cleaned or swapped on a schedule to keep air moving.
Air handling units
Coils, trays and panels cleaned to TR19® Air.
Fire dampers
Drop-tested, recorded and repaired where needed.
All services:
- Kitchen extract cleaning
- Canopy and hood cleaning
- Ductwork cleaning
- Extract fan cleaning
- Fire damper testing
- Air handling unit cleaning
- Ventilation duct cleaning
- TR19 inspections and grease testing
- Extract fan repair and replacement
- Grease filter exchange
- Commercial kitchen deep cleaning
- Grease trap cleaning
- Inspections, repairs and more
One job, several problems solved
Fire safety
Grease in the canopy, ducts and fan is fuel. Cleaning it out takes away what a kitchen fire needs to spread.
Insurance and inspections
Many insurers ask for proof of TR19® cleaning. Your certificate and photo report are that proof, ready for fire officers and EHOs too.
Cleaner air
Clears odours and contaminants and keeps extraction and fans running as they should.
Trusted. Accredited. Documented.
BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we’re fully insured.
Questions about TR19 cleaning
Answers to the most common questions. Can’t find what you need? Get in touch.
Get a quoteHow much does TR19 kitchen extract cleaning cost?
It depends on the size of the system, how much grease has built up, access (roof fans, risers, ceiling voids and access panels) and when the work can be done. We survey first, from photos or on site, and give you a fixed quote before any work starts, usually within one working day. Our cost guide explains what changes the price.
Do I get a TR19 certificate?
Yes. Every TR19® Grease clean ends with a certificate issued through the BESCA Vent Hygiene Elite portal and a photo report showing the system before and after, with anything we couldn’t reach recorded. It’s the evidence your insurer, fire officer and environmental health officer will ask to see.
How often should a kitchen extract be cleaned?
BESA’s minimum intervals are every 3 months for heavy use (12–16 hours a day), every 6 months for moderate use (6–12 hours) and every 12 months for light use (2–6 hours). Grease readings and a risk assessment set the real interval. Source: BESA.
Will it disrupt my business?
We work evenings, overnight and at weekends, or in school holidays, so you don’t lose a service. The kitchen is protected, grease and waste water are contained and taken away, and the kitchen is left ready to use.
Is TR19 a legal requirement?
No. TR19® is BESA’s specification and the benchmark insurers, fire officers and environmental health officers look to. The law is the Regulatory Reform (Fire Safety) Order 2005: the responsible person must assess and reduce fire risk, and in a kitchen that means keeping grease in the extract under control.
Do you cover my area?
We cover Greater London and the whole South East: Surrey, Kent, East and West Sussex, Hampshire, the Isle of Wight, Berkshire, Buckinghamshire, Oxfordshire, Hertfordshire and Essex. Check the areas below or call 0345 646 2711.
London and the South East
Pick your area for local details, or just call us. One number for every site.
Surrey towns
Advice and guides
TR19 Explained: Kitchen Extract Cleaning Standard
What BESA’s TR19® Grease covers, who it applies to, how often extracts need cleaning, how grease is measured and how it relates to the law.
How Often Should a Kitchen Extract Be Cleaned?
BESA’s 3, 6 and 12-month minimum cleaning intervals explained, plus how cooking style and grease readings set the right schedule for your kitchen.
Grease Thickness Testing: WFTT and DTT Explained
How kitchen extract grease is measured in microns, what the 200 and 500 micron figures mean and where readings should be taken.
Fire Damper Testing: A Guide for Building Owners
How fire damper drop testing works, why BESA says test at least annually, the faults testing finds and who is responsible for it.
Kitchen Extract Insurance: What Insurers Want to See
What insurers commonly ask for on kitchen extract cleaning, how to build a TR19 evidence pack and why records of inaccessible sections matter.
TR19 Air Explained: Ventilation Hygiene for Buildings
What BESA’s TR19® Air covers for supply and extract ventilation in offices, schools and hospitals, and how risk-based inspection works.
Ready for a clean bill of health?
Send a few photos of your kitchen extract system and we’ll come back with a fixed quote, usually within one working day. Out-of-hours and emergency cover available 24/7.