How much does air conditioning installation cost?

A split system air conditioner supplied and installed typically costs $1,600–$3,500 per unit, while ducted systems run $9,000–$18,000.

Typical price band

$2,500typical

$900 low$18,000 high

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Real-world examples

Small split system, back-to-back$1,400 – $2,500

Large living-area split$2,400 – $4,500

Ducted reverse-cycle, whole home$9,000 – $20,000

— Unit capacity. Bigger rooms need bigger kilowatt ratings, and unit prices climb with capacity.

— Pipe run & placement. A back-to-back install is cheapest; long pipe runs, double-storey walls or roof-space runs add labour.

— Electrical work. Larger units often need a new dedicated circuit, and old switchboards may need upgrading first.

— Brand & efficiency. Premium brands and higher energy-star ratings cost more up front but less to run.

— Ducted zoning. For ducted systems, the number of zones and outlets is the main price lever.

— Anyone handling refrigerant must hold an ARC licence — ask to see it before work starts.

— Size the unit to the room: an undersized unit runs flat out, an oversized one short-cycles.

— Get the install quoted with the unit included — supply-and-install packages are usually better value.

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Indicative range only, not a quote. Get quotes from local tradies for an exact price. Last updated 13 July 2026.

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