Grease Filters: Clean, Exchange or Replace?
The right choice depends on the filter’s type, condition and fit, and the way the commercial kitchen operates. Routine cleaning cannot repair a damaged or unsuitable filter.
Clean when the filter is suitable for reuse
Follow the manufacturer’s instructions for the filter type. Suitable reusable filters need effective cleaning, safe handling and appropriate wastewater disposal. Do not assume every filter can be cleaned using the same chemical or method.
Exchange when a scheduled service suits operations
A grease filter exchange program replaces dirty filters with suitable clean filters on an agreed schedule. Confirm sizes, quantity, type and access arrangements. The interval should reflect cooking load, condition and applicable maintenance requirements.
Replace when condition or fit is a problem
Distorted frames, damage, missing sections or gaps can warrant replacement. Ask for assessment of a compatible filter rather than substituting a similar-looking unit. Do not operate equipment with missing filters or bypass the manufacturer’s requirements.
Keep full-system cleaning separate
Clean filters do not prove that the plenum, ductwork and fan are clean. Kitchen exhaust cleaning addresses the connected components within the agreed scope.
Use findings rather than a universal timetable
AS 1851 provides the relevant routine-service framework for kitchen exhaust maintenance. The applicable requirements, inspection findings, cooking load and any insurer or building-specific conditions should inform the service plan. Do not assume one annual booking is suitable for every kitchen.
Keep the service record
Keep the agreed scope, service date, before-and-after photographs, PDF report, inaccessible sections and recommended follow-up together. A service report documents the work completed; the insurer, auditor or relevant authority determines whether it meets their requirements.
Arrange a commercial service
Clean Air Filtration provides commercial kitchen exhaust cleaning in Melbourne and Victoria. Tell us your site location, system details, access restrictions and operating hours so we can discuss the cleaning scope. Call (03) 9303 9661 or email sales@cleanair.com.au.
Every client receives a client portal, including one-off services. Completed-service PDF reports and job photos are available there. See our service records guide for what to keep with your maintenance history.
Cover image: AI-generated editorial illustration of representative equipment or premises, not a client-site photograph.