How much does it cost to install an aircon in Melbourne? (2026 price guide)

Installing an air conditioner in Melbourne usually costs between $1,500 and $5,000 for a single split system, $2,500 to $8,000 for a multi-room setup, and $12,000 or more for a ducted system that cools the whole home. The final figure comes down to the type of system, its size, and how tricky your home is to work in.

At QuickAir, we have helped more than 20,000 Australian homes and businesses with their heating and cooling, and “how much will this cost?” is the first thing most Melbourne customers ask. This guide breaks down real 2026 price ranges by system type, explains what pushes a quote up or down, and shows where you can claw money back through Victorian rebates.

How much does air conditioner installation cost in Melbourne?

Installed cost means the unit plus the labour to fit it. Industry cost guides put the typical Melbourne ranges at the figures below.

System type	Typical installed cost (unit + labour)
Single-room split system	$1,500 to $5,000
Multi-head split (2 or more rooms)	$2,500 to $8,000
Ducted reverse cycle (whole home)	$12,000 to $25,000+

A few things to keep in mind when reading those ranges:

• Most quotes for a standard 2.5 to 3.5 kW split system, including installation, land around $1,500 to $3,000.
• A small, basic split unit can cost as little as $600 to $750 before fitting.
• Ducted jobs usually sit around $12,000 to $17,000, with larger or more complex installs pushing past $20,000.

Every home is different, so treat these as starting points rather than the price you will pay. The only way to know your number is a site visit, which we cover further down.

How much does it cost to install a split system?

A wall-mounted split system is the cheapest type to install and the most common choice for Melbourne homes. Expect $1,500 to $5,000 installed, with a typical mid-size unit landing around $1,500 to $3,000.

If you already own the unit, labour on its own generally runs $600 to $1,200 for a straightforward split. The price climbs if the indoor and outdoor units cannot sit back-to-back on the same wall.

Split systems heat and cool a single room or zone, which makes them a strong option where roof or underfloor space is limited. They are also the easiest system to add one room at a time as your budget allows.

How much does a multi-split system cost to install?

A multi-head (or multi-split) system connects several indoor units to one outdoor unit, so you can cool two or more rooms without a second compressor outside. Installed cost typically runs $2,500 to $8,000, depending on how many indoor heads you need and where they go.

Multi-splits suit larger homes and trickier layouts where running ductwork is not practical. They cost more than a single split because there is more piping, more indoor units, and more labour involved.

How much does ducted air conditioning cost?

Ducted reverse cycle is the most seamless way to heat and cool a whole home, and it is also the most expensive to install. A typical Melbourne job runs $12,000 to $17,000, with larger homes or complex installs reaching $20,000 to $25,000 or more.

The price reflects the scale of the work. Ducted systems involve a large outdoor unit, a network of ducts through the roof or floor, vents in every room, and a zoning controller. In older Victorian homes, limited roof space and existing wiring can add to the job.

Ducted gas heating, evaporative cooling, and hydronic heating are quoted the same way, on a site visit, because the cost depends heavily on your home’s layout and the existing setup. We install every major brand and system type, so the system that suits your home is the one we quote on.

What affects the cost of installing an aircon in Melbourne?

Two homes on the same street can get very different quotes. These are the factors that move the number most.

• System type and number of rooms. A single split is the cheapest path. Multi-split and ducted systems need more hardware and more labour.
• Unit capacity. Larger kilowatt units cost more to buy and often more to fit, because of heavier components and longer refrigerant piping.
• Installation complexity. A back-to-back placement, where the indoor and outdoor units sit on the same wall with a short pipe run, is the cheapest. Extra piping, high outdoor units, or two-storey runs commonly add $300 to $600 or more.
• Electrical upgrades. Older Victorian homes sometimes need a switchboard upgrade or a dedicated circuit for a new system. That can add $300 to $800 or more.
• Timing and season. Melbourne labour rates sit slightly above the national average, and peak-summer slots can cost 10 to 20 per cent more. Booking outside the summer rush often saves on labour.

How much is labour-only installation if I supply the unit?

If you buy the unit yourself and only need it fitted, a straightforward split install in Melbourne starts at around $880 and typically runs $600 to $1,200. That price usually covers mounting the indoor and outdoor units, piping up to about three metres, and a new isolator switch.

Anything beyond a standard back-to-back job, such as running pipe through floors or ceilings, brackets on a high wall, or relocating an existing unit, adds to the labour. Always confirm exactly what a labour-only quote includes before you book, so there are no surprises on the day.

Can a Victorian rebate reduce your installation cost?

Yes. The Victorian Energy Upgrades program offers discounts on high-efficiency reverse cycle air conditioners that heat and cool. The saving is applied to your quote upfront, so you pay the reduced amount rather than claiming money back later.

According to the Victorian Government, eligible households can receive up to $5,530 off when they remove or replace a whole-of-home ducted gas heater with an efficient reverse cycle system. Smaller split system upgrades attract a lower discount, but the saving is still worth checking.

To qualify, you generally need to replace a system that is more than two years old, and the work must be done by a VEU accredited provider. If a rebate matters to you, ask your installer directly whether they are accredited under the program before you book, as only accredited providers can apply the discount.

How to get an accurate installation quote

Because every home is different, an honest installation price needs a proper look at your space. During an on-site installation quote visit, the technician considers the size and layout of your home, where the indoor and outdoor units can go, noise, energy ratings, and your budget, then prepares a written quote.

A few things worth knowing about how we handle it:

• The installation quote fee is $149 ($139 for returning customers), and it is credited toward the job if you go ahead, so you are not out of pocket for the assessment.
• We quote and install split systems, multi-split, ducted reverse cycle, evaporative cooling, ducted gas, and hydronic heating across all major brands.
• For larger jobs, interest-free finance is available for up to six months through our lending partner humm90, with same-day approval in most cases.

The price you are quoted is the price you pay. Any work beyond the agreed scope is quoted separately and only proceeds with your approval.

Frequently asked questions

Is it cheaper to install ducted or multiple split systems?

Multiple split systems are usually cheaper upfront. A few splits typically total $2,500 to $8,000, while a ducted system starts around $12,000. Ducted wins on whole-home comfort and a tidier finish, so the right choice depends on how many rooms you want to cool and your budget.

Why is aircon installation sometimes more expensive in Melbourne?

Melbourne labour rates sit slightly above the national average. Older homes also tend to need electrical upgrades, and peak-summer installation slots can cost 10 to 20 per cent more than off-season bookings.

When is the cheapest time to install an air conditioner in Melbourne?

Outside the summer peak. Booking in autumn or winter avoids the 10 to 20 per cent peak-season premium, and technicians have more availability, so you are less likely to wait.

How long does an aircon installation take?

A standard split system install is usually completed in a few hours. Multi-split and ducted systems take longer, often a full day or more, because of the extra units, piping, and ductwork involved.

Do I need to be home for the installation?

Yes. Someone needs to be at the property to give the technician access and to approve any additional work if it comes up during the job.

Get a clear price for your home

Ready to know exactly what your install will cost? Our licensed Melbourne and Victoria technicians can assess your home and give you a clear, written quote, and the $149 quote fee comes off the job if you go ahead. Call 1300 730 896 or book online for a same-day or next-morning visit.