Air conditioning installation in Melbourne usually costs between $600 and $1,500 in labour for a standard split system, or roughly $1,000 to $6,000 all in once you add the unit. A ducted system for a whole home typically runs $6,000 to $15,000 or more installed. The final figure depends on the type of system, the size of your home, and how complex the install is.
We install air conditioning across Melbourne every week at Solus Air, and the question we hear most is what a job like this should actually cost. So we put together the real numbers below, along with the factors that move the price and the rebates that can bring it down. We quote every install upfront and back new systems with a five-year workmanship warranty, so the price you see is the price you pay. This guide works whether you hire us or not.
Air conditioning installation costs in Melbourne at a glance
Installation cost comes down to which type of system you choose. Labour alone is usually the smaller part of the bill. The unit and the complexity of the job make up the rest. Here is how the main options compare.
| System type | Labour (install only) | Installed cost (unit + install) |
| Portable AC | ~$0 (self-install) | $300–$1,500 |
| Split system (single room) | ~$600–$800 | $1,200–$6,000 |
| Multi-split system | Varies by number of heads | $3,000–$10,000 |
| Ducted (whole home) | Depends on home size | $6,000–$15,000+ |
These are typical Melbourne ranges. They exclude any structural or electrical upgrades a particular home might need. The sections below break down what sits behind each number.
How much does split system installation cost in Melbourne?
A single split system is the most common and most affordable option. Expect around $600 to $1,500 in labour on top of the unit, which brings most standard installs to between $1,000 and $6,000 all in.
The unit itself is the biggest variable. A small 2.5kW system for a bedroom costs far less than a 7kW to 9kW unit sized for an open-plan living area. According to consumer group CHOICE, installers’ fees for a split system typically start around $600 to $800 and rise from there depending on the job. A straightforward back-to-back install, where the indoor and outdoor units sit on opposite sides of the same wall, sits at the lower end. Longer pipe runs and awkward outdoor unit placement push it higher.
How much does a multi-split system cost to install?
A multi-split system runs several indoor heads off one outdoor unit, which suits homes that want to cool multiple rooms without ducting. Installed costs generally fall between $3,000 and $10,000.
Price scales with the number of heads. Each additional indoor unit adds hardware, refrigerant pipework, and labour. A two-head setup is far cheaper than a five-head system covering most of the house. Multi-splits are a common choice for homes where ducted is impractical, such as apartments or houses with limited roof space.
How much does ducted air conditioning cost in Melbourne?
Ducted reverse-cycle air conditioning is the premium option and the most expensive to install. Entry-level systems for a small home start around $5,000 to $6,000 installed, and larger homes can exceed $10,000 to $15,000.
CHOICE notes that even a small ducted system rarely costs under $5,000 once installed. The reason is the scope of work. A ducted install involves a central unit, ductwork run through the roof space, vents in each room, and a controller. The number of zones, the layout of the home, and the state of the existing roof cavity all affect the total. If you are moving from gas heating to a reverse-cycle system, a gas-to-reverse-cycle conversion can reuse some existing ducting, which changes the cost picture.
What about portable air conditioners?
Portable units have almost no installation cost because you set them up yourself. The unit runs $300 to $1,500. They are the cheapest way to cool a single room, but they are less efficient and less powerful than a fixed split system. For a room you use every day, a split system usually pays off over time.
What affects the cost of air conditioning installation?
Two homes can get very different quotes for the same system. These are the factors that explain the gap:
- System size and capacity. Larger rooms need bigger, more powerful units, and those cost more to buy and install. Correct sizing matters. An undersized unit runs constantly and wears out early.
- Brand and model. Premium brands cost more upfront but often run more efficiently and last longer.
- Energy efficiency. High-star-rated models carry a higher sticker price but cut your running costs, and they are the models that qualify for rebates.
- Installation complexity. Long pipe runs, multi-storey homes, tight roof cavities, and hard-to-reach outdoor unit locations all add labour. A ground-floor wall mount near a power source is the cheapest scenario.
- Electrical and structural work. If your switchboard needs an upgrade or new wiring is required, that adds to the quote. Most standard quotes cover only a few metres of pipework and basic wiring.
When we assess a home in Melbourne, we measure the rooms, insulation, windows, and ceiling height before recommending a capacity. Guessing the size is one of the most common reasons an install underperforms.
Why is air conditioning installation more expensive in Melbourne?
Melbourne’s installation rates sit among the highest in Australia. Labour costs are the main reason. Industry analyses put average labour for an AC install in Melbourne at roughly $580 to $770, before the unit price.
Victoria also has strict licensing rules that keep quality high. Only a qualified technician holding the right credentials can legally install air conditioning here. Every installer needs a current ARCtick refrigerant handling licence plus the relevant electrical trade licence. That means the person working on your home is a qualified professional, which protects your safety and your warranty but also sets a floor under labour prices.
Can you reduce installation costs with rebates?
Yes. Many Melbourne homeowners can claim a discount through the Victorian Energy Upgrades program. It offers upfront discounts on eligible high-efficiency reverse-cycle systems, applied through an accredited provider before installation.
The savings are significant. Here is what households can currently claim.
| System type | Upfront discount | Estimated annual saving |
| Non-ducted reverse-cycle | Up to $1,610 | ~$460/year |
| Ducted reverse-cycle | Up to $5,530 | ~$1,140/year |
To qualify, the system you are replacing must be more than two years old, and the new unit must be an approved high-efficiency reverse-cycle model with at least a five-year warranty. The discount comes off the price when you use an accredited provider, so it is worth asking about eligibility before you commit to a quote.
How to get an accurate installation quote
The price ranges above are a guide. The only way to know your real cost is to get quotes based on your home. A few things help you compare fairly:
- Get three quotes. Comparing three qualified installers gives you a genuine sense of the market rate and helps you spot an outlier.
- Check what the quote includes. A good fixed-price quote covers the standard job: a few metres of refrigerant and drain pipework, mounting hardware, and basic electrical wiring. Ask what falls outside that.
- Confirm the sizing. Make sure the installer has actually sized the unit to your rooms rather than quoting a generic model.
- Ask about rebates. Confirm whether the model qualifies for a Victorian Energy Upgrades discount.
Regular servicing after install also protects your investment. Booking an air conditioning service each year keeps the system efficient and extends its life.
Frequently asked questions
How long does air conditioning installation take?
A straightforward split system install often takes a few hours to a single day. A ducted system is a larger job and usually takes one to three days, depending on the size of the home and the ductwork involved.
Do you need a licensed installer to install air conditioning in Victoria?
Yes. In Victoria, only a technician with a current ARCtick refrigerant handling licence and the relevant electrical credentials can legally install an air conditioner. DIY installation of a fixed system is not permitted and can void your warranty.
Does the installation quote include everything?
Not always. Most fixed-price quotes cover standard pipework, mounting, and wiring. Extra costs can apply for long pipe runs, switchboard upgrades, or difficult access. Ask for a written quote that lists exactly what is included.
Is it cheaper to install air conditioning in winter?
Often, yes. Demand for cooling installs drops over the cooler months, so availability improves and you have more time to compare quotes before the summer rush.
Book your Melbourne air conditioning installation
The right system, sized correctly and installed by a licensed technician, is worth getting right the first time. If you would like a clear, upfront quote for your home, contact our Melbourne team and we will size the job, walk you through your options, and put the price in writing before any work begins.
