Ducted air conditioning
cost in Cairns

$10,400–$16,400 installed for most Cairns homes. Single-storey zoned systems run $10,400–$13,400; larger two-storey homes run $13,400–$16,400. Roof cavity access and zone count set where you land, the unit itself is typically only 40–50% of the price.

Yes, refrigerated ducted dehumidifies as it cools, which is exactly what the wet needs, provided it's sized for the humidity load and the ductwork is properly insulated in a hot Cairns roof space. Undersized systems run flat-out through February and still lose. Size for the wet, not the average.

Usually, and by a lot: a like-for-like changeover reusing sound ductwork runs about $10,400–$13,400 in Cairns, skipping most of the labour. Get the ducts inspected first, old leaky runs can eat the saving in running costs and are sometimes worth replacing anyway.

For 1–3 rooms, splits win on install and running cost. From 4+ daily-use rooms, ducted becomes competitive per room and wins on whole-home coverage and aesthetics. Our split vs ducted calculator runs both totals for your home in thirty seconds, free, no email.

1–2 days on site for a straightforward single-storey install, 2–3 days for two-storey or complex zoning, after a proper site visit and quote, ducted is never priced accurately over the phone. From the build-up onward, add 2–4 weeks of queue before the crew arrives, book in the Dry.