Aircon installation cost in Brisbane typically runs from around $1,200 to $4,500 for a split system, and anywhere from $8,000 to $20,000 or more for a fully ducted system. Where you land in that range depends on the capacity you need, how complex the install is, and whether any extra electrical work is required to support the system. As a licensed electrician and refrigeration mechanic who quotes these jobs across Brisbane every week, I can tell you the sticker price on a unit is rarely the full story, so here is what actually drives the final number.
What Affects the Cost of a Split System Install?
The biggest factor is capacity. A small 2.5kW unit suited to a single bedroom sits at the lower end of the range, while a larger 7 to 9kW system for an open plan living area costs noticeably more. Beyond the unit itself, installation complexity plays a big part. A straightforward back to back install, where the indoor and outdoor units sit on either side of the same wall, is the cheapest and fastest option. Anything involving a longer pipe run, difficult roof or wall access, or additional wiring back to the switchboard will add to the price.
Why Does Ducted Air Conditioning Cost So Much More?
Ducted systems involve significantly more equipment and labour than a single split system. You are paying for a larger outdoor condenser, a full network of ductwork run through the ceiling space, multiple vents, and a central control panel, plus the installation time to fit it all properly. The size of your home, the number of zones you want, and how accessible your roof space is all move the final number up or down. For a full breakdown of what ducted air conditioning actually involves, our ducted air conditioning page covers the process in more detail.
Does the Brand Make a Difference to the Price?
Yes, though not always in the way people expect. Established brands with a strong reputation for reliability and after sales support, such as Mitsubishi, Daikin and Fujitsu, tend to sit at a similar price point to each other once you compare like for like capacity. Cheaper, less known brands can look appealing on price alone, but a lower purchase cost is not much of a saving if the unit needs repairs or replacement parts within a few years.
Are There Hidden Costs I Should Watch For?
The most common one is electrical work. If your switchboard cannot safely support a new air conditioner, or if a dedicated circuit is needed, that work has to be factored in and it is easy for a quote to leave it out. Removal and disposal of an old unit is another cost that sometimes gets left off a cheap quote, only to appear as an extra once the job is underway. A proper onsite assessment picks up these details before the job starts, rather than after, which is exactly why we avoid quoting sight unseen over the phone.
Are There Any Rebates Available?
It is always worth checking, since eligibility and amounts vary depending on where you live and what system you are installing. The Australian Government’s rebates and assistance page is a useful starting point to see what might currently apply to your situation before you commit to a system.
How Do I Compare Quotes Properly?
Make sure every quote you receive includes the same details, the unit brand and capacity, the scope of electrical work, and whether removal of an old system is included. A cheap quote that leaves out electrical work or disposal costs is not actually cheaper once those extras get added on later. It is also worth confirming the installer is properly licensed, since air conditioning installation in Queensland legally requires both an electrical licence and ARCtick refrigerant handling certification. The Queensland Building and Construction Commission has some solid guidance on comparing quotes fairly and spotting the kind of hidden costs mentioned above.
Is a Split System or Ducted System the Better Value?
It depends entirely on what you are cooling. A split system is the better value if you only need one or two rooms comfortable, since you are not paying for capacity you do not need. Ducted becomes better value once you are trying to cool most of the house, since running several split systems to cover the same ground often ends up costing close to what a ducted system would, without the even, whole home comfort. Our split system air conditioning page has more on what suits smaller spaces specifically.
Getting an Accurate Number for Your Home
Every home is different, and the only way to get an accurate aircon installation cost for your specific place is with a proper onsite look, not a guess based on square metres alone. We have been doing this across Brisbane for years, and our team will walk you through exactly what you are paying for and why, with a free onsite quote and no pressure to sign on the spot.
