The importance of kitchen extract cleaning

Fire risk

Grease inside ductwork is fuel distributed along a route that passes through fire compartments and often terminates on a roof. It is the single strongest argument for a maintained cleaning programme, and it is the one an enforcing authority will focus on after an incident.

Insurance

Policies covering premises with commercial catering commonly carry an express condition requiring extract systems to be cleaned to a recognised standard at a stated frequency, with certification retained. Missing evidence is a straightforward route to a reduced or refused settlement, regardless of how the fire started.

Extraction performance

Deposits reduce duct cross-section and load the fan. Extraction rates fall, heat and humidity build up in the kitchen, odour migrates into dining areas and the fan draws more power for less effect. Cleaning restores the design condition, and in heavily loaded systems the improvement is immediately obvious to the kitchen team.

Working conditions and hygiene

Kitchens with poor extraction are hot, humid and unpleasant to work in, which affects staff retention as much as compliance. Grease accumulation near the canopy also creates a hygiene issue in a food preparation area, which is exactly the kind of finding an environmental health visit does not overlook.

What a proper clean includes

• Canopy, plenum and filter housings
• The full extract duct run, including horizontal sections and bends
• Extract fan, housing and impeller
• Discharge point and terminal
• Access panel installation where the system cannot otherwise be reached
• Pre and post clean deposit readings and photographic evidence