If you run a restaurant, café, or any commercial kitchen in Melbourne, one of the most common questions we hear is: "How often do I actually need to get my exhaust system cleaned?"
The answer depends on how busy your kitchen is — but one thing is certain: leaving it too long is one of the biggest fire risks in any commercial kitchen in Victoria.
In this guide, Melbourne Cleaning Brothers breaks down exactly how often you should be cleaning your canopy, ducts, and exhaust fan — and what happens if you don't.
Why Exhaust Cleaning Frequency Matters
Your commercial kitchen exhaust system works hard every single service. Every time your chefs cook, grease-laden vapours rise up through the canopy filters, into the ductwork, and past the exhaust fan. Over time, that grease builds up layer by layer — and grease is highly flammable.
According to Australian fire safety standards (AS 1851), grease accumulation in kitchen exhaust systems is one of the leading causes of commercial kitchen fires. Regular professional cleaning is not just good practice — it is a legal requirement for commercial food businesses in Victoria.
Beyond fire safety, a clean exhaust system also means:
- Better ventilation and airflow in your kitchen
- Lower energy costs (a clogged fan works harder)
- Healthier working conditions for your kitchen staff
- Passing council health inspections without stress
- Valid insurance coverage (many insurers require documented cleaning)
Recommended Cleaning Frequency by Kitchen Type
Not every kitchen is the same. A fine dining restaurant running two services a day generates far more grease than a small café open for breakfast only. Here is a general guide:
High-Volume Kitchens — Every 3 Months
This includes busy restaurants, pubs, hotels, clubs, and any kitchen operating multiple services daily or using heavy frying, chargrilling, or wok cooking. These kitchens produce the most grease and carry the highest fire risk. Quarterly cleaning is strongly recommended and often required by insurers.
Medium-Volume Kitchens — Every 6 Months
This covers cafés, small restaurants, school canteens, aged care kitchens, and similar operations running one service a day with moderate cooking. Bi-annual cleaning keeps the system safe and maintains good airflow.
Low-Volume Kitchens — Once a Year
For kitchens with light cooking — such as staff kitchens, small sandwich bars, or venues that primarily serve cold food — an annual clean is generally sufficient. However, if you notice reduced airflow or visible grease buildup, do not wait for your scheduled clean.
What Gets Cleaned — and Why Each Part Matters
A professional commercial kitchen exhaust clean by Melbourne Cleaning Brothers covers every component of your system:
Canopy Cleaning
The canopy (also called the range hood) is the first point of contact for cooking vapours. Grease collects on the internal surfaces, baffles, and filter frames. A thorough canopy clean removes all built-up grease and carbon, restoring full capture efficiency and eliminating the fire ignition risk at the cooking surface.
Kitchen Duct Cleaning
The ductwork is the hidden danger zone. Grease travels through the ducts and coats the internal walls — often out of sight and out of mind. A duct fire travels fast and is extremely difficult to extinguish. Professional duct cleaning using high-pressure washing and inspection ensures the entire pathway from canopy to exhaust outlet is clear.
Exhaust Fan Cleaning and Maintenance
The exhaust fan sits at the top of the system and takes a constant beating. Grease buildup on the fan blades causes imbalance, vibration, and motor wear. Regular exhaust fan degreasing extends the life of the motor, restores full airflow capacity, and prevents overheating — which is itself a fire risk.
Signs Your Exhaust System Needs Cleaning Now
Do not wait for your scheduled service if you notice any of the following:
- Visible grease dripping from the canopy or filters
- Reduced airflow or smoke lingering in the kitchen
- Unusual smell or burning odour from the exhaust system
- Increased heat in the kitchen during service
- Your last professional clean was more than 6 months ago
If you are seeing any of these signs, contact Melbourne Cleaning Brothers for an urgent inspection.
What About Melbourne Council Inspections?
Melbourne City Council and local councils across Victoria conduct regular health and safety inspections of commercial food premises. Inspectors check not only food handling practices but also the condition of your kitchen exhaust system.
A dirty or poorly maintained exhaust system can result in:
- A failed inspection and a requirement to rectify immediately
- A fine or compliance notice
- Temporary closure of your premises in serious cases
Melbourne Cleaning Brothers provides a cleaning completion certificate after every service, which you can present to your council inspector or insurer as proof of compliance.
How Melbourne Cleaning Brothers Can Help
At Melbourne Cleaning Brothers, we specialise in commercial kitchen exhaust cleaning across Melbourne — including the CBD, Southbank, Richmond, St Kilda, Fitzroy, Collingwood, Carlton, South Yarra, and surrounding suburbs.
Our service includes:
- Full canopy degreasing and cleaning
- Complete duct cleaning (from canopy to roof outlet)
- Exhaust fan blade and motor degreasing
- Before and after photos provided
- Cleaning compliance certificate issued
- Flexible scheduling — including after-hours and weekend cleans to minimise disruption
Whether your kitchen needs a quarterly deep clean or you are catching up on overdue maintenance, our team is ready to get your exhaust system back to a safe, compliant standard.
Book Your Commercial Kitchen Exhaust Clean in Melbourne
Do not wait until you have a problem. A clean exhaust system protects your staff, your premises, and your business licence.
Call us today on 0488 691 870 or visit melbournecleaningbrothers.com to book your commercial kitchen exhaust cleaning service in Melbourne.
Melbourne Cleaning Brothers — Professional Commercial Kitchen Exhaust Cleaning, Canopy Cleaning, Duct Cleaning, and Exhaust Fan Cleaning across Melbourne, VIC.