Neither is simply "better" — it comes down to how much of your home you want to cool. Split systems are the most cost-effective way to cool one or two rooms, while ducted is the best choice for quiet, whole-home comfort with a clean look and room-by-room zoning. Plenty of Cairns homes end up using a mix of both.
Split systems: simple and cost-effective
A split system pairs one indoor head with one outdoor unit, cooling a single room or open space. It's the go-to for bedrooms, a living area or a home office.
Pros
- Lower upfront cost
- Quick install (often a few hours)
- Cool only the rooms you use
- Easy to add over time
Cons
- A wall unit in every room
- Multiple outdoor units for whole homes
- Less seamless than ducted
Ducted: whole-home comfort, hidden away
A ducted system runs from a central unit in the roof through discreet ceiling vents, with zoning so you control each area independently — ideal for new builds, renovations and larger homes.
Pros
- Even, whole-home comfort
- Clean look — only vents visible
- Smart zoning with AirTouch 5
- Quiet operation
Cons
- Higher upfront cost
- Needs roof/ceiling space
- Bigger install (2–3 days)
What about cost?
Split systems in Cairns typically run $1,550–$3,500 installed per unit, while a whole-home ducted system typically ranges $20,000 to $30,000. If you only need one or two rooms, splits win on price; if you're cooling the whole home, ducted often makes more sense than five or six separate splits. See our full cost guide for the detail.
So which should you choose?
- Choose split if you're cooling one or two rooms, want the lowest upfront cost, or are adding to an existing setup.
- Choose ducted if you want whole-home comfort, a clean look, zoning, and you're building or renovating.
- Mix both — many homes run ducted through the main living zones and a split in a granny flat, studio or shed.
The short version
A room or two? Go split. The whole home, done seamlessly? Go ducted. Not sure? We'll look at your home and recommend the honest best fit — not just the bigger job.
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