Installing a slow-combustion wood heater in Victoria is a regulated job, not a weekend project. In most cases it requires a building permit, the heater must be an approved model meeting the AS/NZS 4013 emission standard, and the installation must comply with AS/NZS 2918 for flue specification, clearances and hearth construction. Get any of these wrong and you risk voiding your insurance, failing a future building inspection, and creating a real fire hazard.
This guide sets out exactly what Victoria requires — permits, emission rules, flue and clearance specs, and the installer process — so you know what a compliant installation actually involves before you commit.
Do You Need a Building Permit?
In most cases, yes. This is the question homeowners most often get wrong, so it is worth being clear.
A new slow-combustion heater installation in Victoria generally requires a building permit, because it creates a new flue penetration through the roof, requires a compliant hearth, and must achieve specified clearances to combustible materials — all matters governed by the Building Regulations and AS/NZS 2918. A registered building surveyor issues the permit, and the work is typically inspected for compliance.
Some straightforward like-for-like replacements of an existing compliant heater may be simpler, but you should never assume your job is exempt. The safest approach is to treat a new installation as permit-required and let your installer or a building surveyor confirm the specifics. Skipping a required permit is the kind of thing that surfaces at the worst possible time — during a home sale, an insurance claim, or a building inspection. For the broader rules, see our guide on Victorian wood heater rules.
EPA Emission Standards
You cannot legally install just any wood heater in Victoria. The heater itself has to be a compliant, approved model.
New wood heaters sold and installed in Australia must meet AS/NZS 4013, the emission and efficiency standard, and EPA Victoria enforces wood heater emission requirements as part of its air-quality role. In practice this means you must choose a current, approved model that meets the emission limits — you cannot install an old second-hand heater or a non-compliant imported unit and expect it to pass.
This matters for Melbourne specifically, where wood smoke is a recognised winter air-quality issue and the EPA can declare poor-air-quality days. Choosing a clean-burning, compliant, efficient heater is both a legal requirement and a genuinely better outcome — it burns less wood, produces less smoke, and builds less creosote in your flue.
Flue and Clearance Requirements
This is the technical heart of a compliant installation, and the reason it is genuinely skilled work.
The flue must be the correct type and diameter for the heater, run with the right height above the roofline for proper draught, and use compliant components and roof flashing to prevent water entry — a real concern in Melbourne's wet winters, covered in our guide on chimney waterproofing. Flue height rules exist so the heater drafts correctly and smoke clears the building rather than blowing back down.
Clearances are model-specific. Each approved heater has a listed minimum distance to combustible walls and floors under AS/NZS 4013 and AS/NZS 2918, sometimes reducible with approved heat shields. There is no universal number — the installer must follow the specific model's specification exactly. The hearth beneath and around the heater must be non-combustible and sized to the model's requirements. Getting clearances wrong is one of the most common and most dangerous installation faults, which is precisely why this is not DIY territory.
Installer and Approval Process
Putting it together, here is what a compliant Victorian installation looks like in practice.
You choose an approved AS/NZS 4013 heater, engage a qualified, experienced installer (and a licensed gasfitter or electrician if there are related services), and ensure a building permit is obtained where required. The installer fits the heater to the manufacturer's specification and AS/NZS 2918 — correct flue, clearances, hearth and flashing — and the work is inspected for compliance. You should receive documentation confirming the heater model and compliant installation, which is exactly what you will want on hand at sale or insurance time.
Expect installation to cost roughly $800 to $2,500 in Melbourne on top of the heater, driven by flue length, roof type and access — hip roofs and two-storey homes cost more. Always get an itemised quote that states whether the permit is included. If you are converting an existing open fireplace, see our guides on fireplace insert installation and open fireplace vs closed combustion.