In Australia, whether you need exhaust (ventilation) equipment for cooking appliances depends on a few factors — including the type of appliance, its energy source, and how it impacts the indoor environment, not just its power rating (kW).
For appliances under 7.5kW, here’s the general guidance:
1.
Gas Appliances
If the appliance is gas-powered (even under 7.5kW), you will almost always need mechanical ventilation.
This is because gas combustion produces carbon monoxide and other harmful by-products, and Australian Standards (especially AS 1668.2-2012 and AS/NZS 5601) require exhaust systems to safely remove these from indoor environments.
Summary:
- Gas appliances under 7.5kW = Ventilation usually required.
2.
Electric Appliances
For electric cooking appliances (like a small combi oven, induction cooktops, or electric grills) under 8kW, ventilation might not always be legally required, but it is highly recommended.
Even without combustion gases, these appliances produce heat, steam, and grease vapors, which can lead to:
- Moisture build-up (risk of mould and damage)
- Poor air quality
- Uncomfortable working environments
Some jurisdictions may waive mandatory mechanical ventilation for very small, low-use appliances under specific conditions (e.g., residential-style kitchens or where alternative ventilation like operable windows is provided).
However, commercial environments, including homes with commercial equipment, are expected to comply with stricter standards, meaning a dedicated exhaust hood is recommended or required — even under 7.5kW.
3.
Council and Health Department Rules
If you’re running a commercial kitchen (even in a small café or food business) or installing commercial-grade equipment in your home, local council regulations or building certifiers may still require mechanical exhaust systems, regardless of appliance size.
You must check with:
- Your local council
- Your building certifier
- State-based health and building codes
Each state (NSW, VIC, QLD, etc.) can have slight differences.
Final Advice
Even if it’s not technically required, having proper mechanical exhaust over cooking equipment — whether gas or electric — improves safety, comfort, and compliance.
It’s always smart to consult a licensed mechanical contractor or building certifier to review your specific setup.
