Aircon installation in Australia typically costs between $1,000 and $5,000 for a single split system, and between $8,000 and $18,000 or more for a ducted system that cools a whole home. A multi-head split that covers a few rooms usually sits around $4,200 to $8,000. At QuickAir, we’ve installed and serviced heating and cooling in more than 20,000 Australian homes across every capital city, and the final figure almost always comes down to the type of system, the size of your home, and how complicated the install is.
Those ranges cover both the unit and the labour to fit it. The reason the numbers stretch so wide is that a small wall-mounted split in a single bedroom is a very different job to a ducted system running through a large two-storey house. The system you choose sets the ballpark, and the details of your home move it up or down from there.
Below is the full picture: the typical installed cost by system type, what’s actually included in the price, the factors that change your quote, and how to get an accurate number for your home.
How much does air conditioner installation cost by system type?
The single biggest driver of price is the type of system you install. The table below shows typical installed costs in Australian dollars, covering the unit and the labour, based on what we quote day to day. Independent figures line up with this. The consumer group CHOICE reports that a ducted system for a typical freestanding house often reaches $10,000 or more, rising past $15,000 for a large or multi-floor home.
| System type | Typical installed cost (AUD) |
| Single-room split system (2 to 5 kW) | $1,000 to $5,000 |
| Multi-head split system (2 to 4 rooms) | $4,200 to $8,000 |
| Ducted, small home (3 bedroom) | $8,000 to $11,000 |
| Ducted, large home (4+ bedroom, zoned) | $12,000 to $18,000 or more |
| Labour only (you supply the unit, split install) | $600 to $900 |
Treat these as ranges, not fixed quotes. Two homes fitting the same system can land at different prices once access, brand, and any electrical work are factored in. The sections below break down what sits behind each number.
How much does it cost to install a split system?
A single split system, meaning one indoor head paired with one outdoor unit, generally costs $1,000 to $5,000 installed for a standard room. Prices vary by city and by the unit you choose. In Sydney we typically see $1,800 to $4,800 for a single split supplied and installed, while in Brisbane a smaller unit can start closer to $900. A basic 2.5 kW unit begins around $600, and a high-capacity model for a large open-plan area can run to $5,000 before installation.
The split system is the most popular way to cool and heat the rooms Australians actually live in, which is why it’s the most common install we do. If you need to cover more than one room, a multi-head split runs several indoor units from a single outdoor unit and typically costs $4,200 to $8,000 for two to four rooms. Each additional indoor head usually adds around $1,000 to $1,500.
If you already own the unit and only need it fitted, a labour-only split install usually costs $600 to $900. That said, most homeowners buy the unit and installation together, because a system supplied and warranted by the installer avoids the finger-pointing that happens when a fault appears and nobody’s sure whether it’s the unit or the fitting.
How much does ducted air conditioning installation cost?
A ducted reverse cycle system costs between $8,000 and $18,000 or more installed, depending on the size of your home and how many zones you want. A smaller home or apartment can start around $5,000 to $10,000, while a large home with full zoning can climb above $15,000 to $20,000. One unit sits out of sight on the roof and pushes conditioned air through ceiling vents into every room, heating in winter as well as cooling in summer.
That whole-home coverage is why a ducted reverse cycle system costs several times more than a single split. Ducted pricing also varies more than any other system we install, because there are more moving parts: the size of the unit, the length of the duct runs, the number of zones, and how easy the roof space is to work in. Two homes of the same size can land thousands of dollars apart once zoning and access are factored in.
What’s included in the cost of an aircon installation?
An installed price is made up of the unit itself plus the labour and materials to fit it. Understanding the split helps you read a quote and spot where a low headline number might be leaving something out. The table below shows the typical components for a split system install.
| Cost component | Typical cost (AUD) |
| The unit (basic 2.5 kW up to high-capacity) | $600 to $5,000+ |
| Split installation labour | $600 to $1,200 |
| Materials and fittings (brackets, copper piping, insulation, drain) | $100 to $500+ |
| Electrical work (dedicated circuit or switchboard upgrade) | $300 to $800+ |
| Licensed technician hourly rate | $60 to $110 per hour |
Installation labour for a standard single split is usually a few hundred dollars up to around $1,000 to $1,200. On top of that sit the materials that connect the indoor and outdoor units: mounting brackets, copper piping, insulation, drain lines, cable conduit, and weatherproofing. Longer pipe runs use more copper and insulation, which is one reason the same unit can cost more to fit in one home than another.
Air conditioners must be installed by a technician who holds the national refrigerant handling licence, so this is not a job to hand to a general handyman. You can verify an installer’s credentials with the official ARCtick licence check, which confirms whether a refrigerant handling licence is current. Every QuickAir installer is ARCtick certified and holds the state electrical licences the work legally requires.
What affects the cost of aircon installation?
Beyond the system type, a handful of factors move your quote up or down. These are the ones that make the biggest difference to the final number.
- Installation complexity. A back-to-back install, where the indoor unit sits directly against an exterior wall with the outdoor unit on the other side, is the simplest and cheapest. Long refrigerant pipe runs, multiple storeys, tight ceiling spaces, double-brick walls, or difficult access all add labour and materials.
- Electrical work. A new air conditioner needs a dedicated circuit. If your switchboard needs upgrading or new wiring, expect roughly $300 to $800 or more on top of the base price.
- Old unit removal. If you’re replacing an existing system, decommissioning and disposing of the old unit is sometimes included in the quote and sometimes charged separately. It’s worth confirming which.
- Brand and efficiency. Premium inverter brands and high-efficiency models cost more upfront than budget units, though they usually cost less to run. Features like Wi-Fi controls or smart thermostats add to the install too.
- Location and season. Labour rates and demand are higher in major cities, and getting a quote in the middle of a heatwave can cost more than booking in the off-season. Planning an install for spring or autumn often lands at a better price.
How much does labour alone cost to install an air conditioner?
Labour to fit a split system you’ve already bought usually runs $600 to $900, and licensed technicians typically charge around $60 to $110 per hour for the work. A straightforward back-to-back split can be done in a few hours, while a ducted install is a much larger job measured in days rather than hours.
The catch with labour-only pricing is that the quote depends heavily on what the technician finds on the day. A simple install stays at the lower end, but a long pipe run, a switchboard upgrade, or awkward access can lift it well beyond the base figure. This is exactly why a fixed written quote based on an on-site look at your home is worth more than an hourly estimate over the phone.
How to get an accurate air conditioning installation quote
The prices above are ranges, and the only way to know your number is a proper on-site assessment. An installation quote depends on your actual home: the room or rooms you’re cooling, where the indoor and outdoor units can go, the pipe run between them, and any electrical work needed. None of that can be judged accurately over the phone.
When you compare quotes, make sure each one covers the same scope. A complete quote should include the unit, the labour, all materials and fittings, any electrical work, and removal of the old system if you’re replacing one. The cheapest quote is not always the cheapest job if it leaves out the switchboard upgrade or the disposal fee. It pays to get a detailed written quote and confirm exactly what each price covers before you decide. When one of our technicians assesses a home, they look at the system that suits it, the unit placement, the pipe run, and any electrical work, then give you a fixed written quote so there are no surprises on install day.
A well-installed system also holds its value longer when it’s looked after, so it’s worth factoring in a regular service and maintenance visit once the unit is in.
Frequently asked questions
How much does it cost to install a split system air conditioner in Australia?
A single split system typically costs $1,000 to $5,000 installed, covering the unit and the labour. Smaller units start around $900 to $1,000, while high-capacity models for large open-plan spaces reach about $5,000. If you supply the unit yourself, labour-only installation usually costs $600 to $900.
How much does it cost to install ducted air conditioning?
Ducted air conditioning costs $8,000 to $18,000 or more installed for most homes. A small home or apartment can start around $5,000 to $10,000, while a large home with full zoning can exceed $15,000 to $20,000. The price depends on your home size, the number of zones, and how complex the roof access is.
Is it cheaper to install split systems or ducted air conditioning?
Split systems are much cheaper to install than ducted. A single split runs $1,000 to $5,000, compared to $8,000 or more for a ducted system. The gap narrows if you need splits in many rooms, but for one or two rooms a split is always the cheaper option.
How much does it cost just to fit an air conditioner I already bought?
Labour to fit a split system you’ve supplied usually costs $600 to $900, with licensed technicians charging around $60 to $110 per hour. The final figure depends on the install: a simple back-to-back job stays low, while long pipe runs or a switchboard upgrade push it higher.
Why do air conditioning installation quotes vary so much?
Quotes vary because the system type, home size, install complexity, electrical work, brand, and even the season all change the price. A back-to-back split is far cheaper to fit than a long pipe run through a double-brick, two-storey home, which is why an on-site assessment gives a far more accurate number than a phone estimate.
Get a fixed quote for your installation
Working out a ballpark from the ranges above is a smart first step, but the accurate number for your home comes from an on-site look at the room, the unit placement, and any electrical work. You can book an on-site installation quote for a fixed $149, credited back to you if you go ahead with the install. Our licensed technicians work across every capital city, often with same-day or next-morning availability, and give you a fixed written quote with no pressure either way, backed by our 100% workmanship guarantee. Get in touch or call us on 1300 730 896.
