A split system installed in Cairns typically costs from around $1,550 for a small 2.5kW back-to-back changeover up to about $3,500 for a larger system, while a whole-home ducted system generally runs from around from $20,000. The exact figure depends on the type of job, your home and the system you choose, so a free site inspection is the only way to get an accurate price.
Split system costs in Cairns
The biggest factor is whether it's a replacement or a brand new install. A back-to-back changeover (replacing an existing unit in the same spot) is the cheapest option because the pipework, electrical and wall penetrations are usually already there. These typically start around $1,550 for a small 2.5kW bedroom system and run up to about $3,500 for larger living-area units.
A brand new install costs more, because it includes new pipework, electrical, drainage and wall or roof penetrations. Multi-split systems (several indoor heads on one outdoor unit) sit higher again, depending on how many rooms you're cooling. You can read more on our air conditioning installation page.
Ducted air conditioning costs in Cairns
A whole-home ducted system in Cairns typically ranges from $20,000 to $30,000. What moves the price within that range:
- The size of your home and the number of zones
- The brand and capacity of the system
- Available ceiling and roof space for ducting
- Whether it's a new build, renovation or retrofit
- Smart control like AirTouch 5 zoning
What changes the price
Two homes rarely cost the same to fit out. Beyond the system itself, the things that move a quote up or down include access and height (high-set Queenslanders take more planning), the run length for pipework, electrical upgrades, the number of rooms, and the brand and efficiency you choose. Coastal homes also benefit from anti-rust protection, which we include free as standard.
Should you supply your own unit?
Usually it doesn't save money. Because we have trade-only supplier relationships, our supply-and-install price is often the same as, or cheaper than, buying retail and arranging an installer separately, and you keep one team accountable with full warranty. Buying your own also risks the wrong size and missing full manufacturer warranty.
Finance options
If you'd rather spread the cost, we offer no-deposit, interest-free finance through humm on approved applications. Ask us about it when you get your quote and we'll walk you through it.
The short version
Split systems in Cairns: roughly $1,550–$3,500 installed. Ducted: roughly from $20,000. The only accurate number is a free, itemised quote for your home.
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