How grease accumulates in extraction systems
Every cooking process releases vaporised oils and particulates. Baffle filters catch the heaviest fraction, but a meaningful percentage of grease passes through into the plenum and ductwork. There it cools, condenses and bonds to internal surfaces — turning, over weeks and months, into a hardened combustible coating that lines every metre of duct.
Whole-system grease removal
- Canopy interior and plenum hand-cleaning
- Baffle and mesh filter strip, soak and replacement
- Rotary brushing and vacuum extraction across full duct length
- Fan impeller, scroll and motor housing cleaning
- Discharge cowl and roof-stack cleaning
- Pre/post deposit measurement at sample points
- Photography at every access opening
- Signed TR19® post-clean certificate
Why a partial clean isn't enough
Cleaning only the canopy and filters leaves the dangerous fuel — the duct and fan grease layer — untouched. A compliant grease extraction clean addresses the full envelope or it isn't TR19® aligned. We quote and deliver against the whole system, not just the visible surfaces.
Frequently asked questions
How is 'clean' actually measured?+
With calibrated wet-film comb gauges at agreed sample points along the duct run, before and after cleaning. Readings are recorded in the TR19® certificate.