Kitchen exhaust cleaning Brisbane isn’t just about presentation, running a high-output kitchen in Brisbane means heat, steam and airborne grease every single shift. It is a key fire-safety and compliance task that protects staff, reduces power costs and keeps insurers and auditors happy. Below, we break down what AS 1851 requires, how often to clean based on risk, and the simple checks that tell you it’s time to book a professional clean.
AS 1851 at a glance: What it covers and why it matters
AS 1851 is Australia’s routine service standard for fire protection systems and equipment. In commercial kitchens, it sets out inspection, maintenance and record-keeping for exhaust systems so grease does not become fuel inside canopies, ducts and fans. Building owners are expected to maintain compliance as a condition of safety and insurance.
Key takeaway: If your kitchen generates grease aerosols, AS 1851 expects you to inspect regularly and clean at defined intervals, with records to prove it.
Kitchen Exhaust Cleaning Brisbane: the AS 1851 inspection and cleaning intervals
Monthly routine service for kitchen exhaust systems: Inspect the kitchen exhaust system for excessive grease accumulation and complete the checks listed in the monthly schedule. If grease is excessive, clean without delay.
Annual minimum clean: AS 1851 calls for a comprehensive clean of the canopy and exhaust system at least once every 12 months. Many Brisbane venues will need more frequent cleaning depending on menu and hours.
Best practice goes further than a fixed timetable. The AIRAH Commercial Kitchen Exhaust Management guide recommends basing frequency on measured grease thickness and access for thorough inspection and cleaning. This evidence-based approach helps you clean as often as needed, not just by the calendar.
How often should you clean in Brisbane?
- Heavy use (woks, deep fryers, chargrills, bacon on every service): monthly inspection with cleans typically every 6–8 weeks.
- Moderate use (mixed menu, lunch and dinner): monthly inspection with cleans every 2–3 months.
- Light use (baking, low-grease prep): monthly inspection with cleans every 3–6 months.
Use these as starting points, then set the final interval from on-site findings, grease measurements and photo evidence after each service.
What Brisbane inspectors, landlords and insurers look for
- Records: dated service reports, photos, and a clear log of filter washing and professional cleans.
- Access panels: enough access to reach and degrease internal duct surfaces and fan housings.
- Function: adequate capture at the cookline with no smoke spill, and make-up air that balances extraction. (AS 1668 sets the ventilation design framework, while AS 1851 governs routine service.)
Quick in-house checks you can do this week
- White-cloth test: wipe inside the canopy throat and the first 300 mm of duct entry. Brown film means grease is migrating.
- Torch test: hold a light behind a clean, dry baffle filter. If daylight doesn’t pass evenly, it’s still clogged.
- Paper test: with the fan on, a sheet of paper should hold firmly to the filter face. If it drops, capture is weak.
- Listen and look: new squeals, belt slip, vibration, hot motor smells or roof stains around the cowl need a tech before damage snowballs.
What a professional exhaust cleaning should include
- Degrease the canopy, plenum and accessible ductwork to bare metal where safe and practical.
- Remove, soak and rinse baffle filters with the right detergent, then dry fully before refitting.
- Clean and balance the rooftop exhaust fan including blades, housing and discharge, then check motor temps, belts and bearings.
- Verify airflow and capture at the cookline after reassembly.
- Provide before-and-after photos and a service report suitable for landlords, insurers or council audit.
- Recommend a next-service date based on menu, hours and observed grease levels, aligned to AS 1851 and AIRAH best practice.
Brisbane factors that shorten your interval
- High-grease menus: wok hei, deep-fried stations, bacon and chargrill sections generate more aerosols per hour.
- Extended hours: breakfast through late night means faster accumulation between services.
- Filter care: washing without proper degreaser, or refitting filters before they are dry, reduces capture and creates odours.
- Make-up air issues: negative pressure causes smoke spill into the room and redistributes grease onto lights and walls.
- Baffle filters: stainless vs aluminium, and how to care for them
- Stainless filters usually tolerate stronger degreasers and last longer under heavy use. Aluminium is lighter and cheaper upfront but can suffer if hit with the wrong chemicals. Regardless of material, AS 1851 expects monthly inspection and cleaning as required, which for busy kitchens often means daily rinse-outs by staff plus scheduled professional cleans.
Set your 12-month plan in line with AS 1851
- Baseline inspection: get a full system assessment with photos and initial grease readings.
- Agree an interval: choose a cycle based on risk and the AIRAH best-practice approach to measured grease thickness.
- Log everything: keep a simple register of staff filter-washing and professional cleans.
- Review quarterly: adjust the frequency up or down based on proof from the canopy throat, ducts and the fan discharge.
Why partner with a local specialist
We look after restaurants, cafés and food courts across Brisbane, South Brisbane and the Gold Coast. Our team cleans canopies, ducts, rooftop fans and motors, balances fans to cut noise and power draw, and documents every visit so you have what auditors need. If you’re seeing early warning signs, kitchen exhaust cleaning Brisbane should be scheduled now, not later.
Book an inspection
Need an honest look at your system and a service plan that fits your hours and menu? We offer after-hours appointments to minimise downtime. Contact our team to lock in your inspection.
FAQ
What exactly does AS 1851 require each month?
A monthly routine service that inspects kitchen exhaust components for excessive grease accumulation and completes checks listed in the schedule. If accumulation is excessive, clean immediately.
Is an annual clean really mandatory if I’m rinsing filters daily?
Yes. AS 1851 calls for at least a yearly clean of the canopy and exhaust system, with more frequent cleans determined by grease load and inspection findings. Daily filter care is essential but does not replace professional duct and fan cleaning.
What’s the best way to prove compliance?
Hold service reports and photos for every clean, keep a filter-washing log, and ensure access panels allow proper inspection of ducts and the fan housing. Use measured grease levels to set your frequency per AIRAH best practice.