Victoria's air conditioning rebate is about to change on September 30
For years, the Victorian Energy Upgrades (VEU) program has made reverse-cycle air conditioning one of the cheapest ways to heat and cool a Victorian home. Government-backed incentives have quietly covered a large share of the cost of new systems, and thousands of households have used them to move off ageing, inefficient units. From 30 September 2026, two changes to the scheme will make that upgrade meaningfully more expensive for a lot of homes, and the window to install under the current rules is closing fast.
Here is what is actually changing, what it means in dollar terms, and how to make the most of the rebate before it shrinks.
What is changing?
There will be a cap on how much of your system the rebate covers. From 30 September 2026, incentive calculations for multi-split reverse-cycle air conditioners installed in Victorian homes will be capped at 20 kilowatts of heating and cooling capacity. You can still install a larger system if your home genuinely needs one, but any capacity beyond 17kW simply will not attract additional rebate value. For a household running several indoor units off one outdoor unit to cover multiple bedrooms, living areas and a study, that ceiling arrives faster than it sounds. Non-residential installations are not affected.
A higher minimum out-of-pocket contribution is also coming. Every VEU air conditioning upgrade requires the homeowner to pay a minimum co-payment before any rebate is applied. Today, that minimum sits at $1,000 including GST for most systems. From 30 September, that rises to $3,000 including GST for any ducted reverse-cycle system, and for multi-split systems with a cooling capacity of 10kW or more. Smaller multi-split systems under 10kW cooling stay at the current $1,000 minimum. For a whole-home upgrade, that is an extra $2,000 you will need to find before installation costs are even factored in.
Put together, these two changes hit the same group of households hardest: anyone planning a multi-room or whole-home upgrade, rather than a single split system for one room.
Why the government is making the change?
The stated rationale is about right-sizing, not just cost control. Oversized systems can short-cycle, waste energy and deliver less comfort than a correctly sized one, so the changes are designed to align the rebate with a home’s actual heating and cooling needs rather than rewarding bigger installations by default. It is a reasonable goal. It also means the incentive structure that made larger upgrades attractive is genuinely changing, not just being trimmed at the edges.
What this looks like against a real system
A single room upgrade, such as a 2.5kW to 9.9kW Split unit, sits well under both thresholds. Most one-room installs will see little to no change from these rules.
A multi-room upgrade is where the impact lands. A Multi-Head system covering several rooms, or sized for a larger or growing household, will typically sit above the 10kW cooling threshold once two or three indoor units are connected. From 30 September, that installation moves to the $3,000 minimum co-payment, and if the combined capacity you actually need runs past 20kW, that additional capacity will not attract further rebate.
A whole-home ducted system, sized for a house up to 170m² or 230m², will also fall under the higher co-payment tier. These are exactly the installations where the VEU rebate has historically made the biggest difference to affordability, which is why the change is worth planning around rather than discovering after the fact.
What to do before 30 September
If you have been thinking about replacing an old ducted system, adding air conditioning to more rooms, or upgrading a home that currently relies on a single split unit, the next few weeks are the time to move, for two reasons that have nothing to do with pressure tactics and everything to do with the calendar.
First, the lower co-payment is only available on installations completed and accredited before the deadline, not just quoted or booked. Second, the uncapped incentive calculation on multi-split systems only applies while the current rules are in force. Waiting until spring means paying more for the same system, or accepting a smaller rebate on the same capacity.
Practically, that means:
- Get your home assessed properly, so any system you install is sized to what your rooms actually need rather than guessed. Right-sizing is good practice regardless of the rebate, and it protects you from the running-cost and comfort issues an oversized system can cause.
- Get quotes now rather than in September, particularly if you are considering a multi-head or ducted system. Installation capacity books out as deadlines approach, and an accredited provider needs time to complete the system correctly, not just fast.
- Ask your installer to walk you through exactly how the co-payment and incentive calculation apply to the specific system you are quoted, rather than relying on a general summary. The 10kW and 20kW thresholds are calculated on the equipment you install, and getting a clear answer before you commit avoids surprises on the invoice.
Where Emerald fits in
Emerald’s air conditioning range spans single-room Split Select units through to Multi-Head Pro and Multi-Head Ultra systems for multi-room homes, and Ducted Ultra systems for whole-home comfort, all backed by a 7 year system and 5 year labour warranty on the Pro, Ultra and Ducted range, plus an additional free year when you register your unit online. Our team can talk through how the 30 September changes apply to the system that actually suits your home, and help you get an installation booked and accredited while the current rebate settings still apply.
Victoria’s air conditioning rebate has helped a lot of households upgrade sooner than they otherwise would have. From 30 September, that help still exists, but it costs more to access and it covers less capacity than it used to. If an upgrade has been on your list for this year, now is the time to bring it forward.
Engineered for effortless efficiency: that is the standard Emerald builds to, rebate or no rebate, and it is worth getting the timing right either way.
Rebate details are based on the Victorian Energy Upgrades program as announced ahead of the 30 September 2026 changes. Program rules and figures can be updated by the Victorian Government, so confirm current co-payment and incentive settings with an accredited provider before booking your installation.