How much does air conditioning cost in Adelaide?
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Air conditioning installation in Adelaide costs $1,100–$2,300 for a small 2.5 kW split system, $1,650–$3,225 for a 5 kW unit (the most popular size for living rooms), and $2,025–$4,150 for a large 7 kW system. Ducted whole-home systems cost $7,350–$12,900 installed.
We've compiled pricing from HVAC installers across Adelaide as of October 2026. All prices include supply, installation, and GST.
Detailed Pricing — Air Conditioning Cost in Adelaide 2026
Cooling an office, shop or warehouse instead? See our commercial air conditioning cost guide for Adelaide.
| Service | Low | Typical | High |
|---|---|---|---|
| Split system 2.5 kW (supply + install) | $1,100installed | $1,650 | $2,300 |
| Split system 5 kW (supply + install) | $1,650installed | $2,300 | $3,225 |
| Split system 7 kW (supply + install) | $2,025installed | $2,950 | $4,150 |
| Split system 9 kW (supply + install) | $2,750installed | $3,875 | $5,050 |
| Multi-split system (2 heads) | $3,675installed | $5,050 | $6,900 |
| Multi-split system (4 heads) | $6,450installed | $7,800 | $11,050 |
| Ducted system (basic) | $7,350installed | $10,100 | $12,900 |
| Ducted system (premium/zoned) | $11,050installed | $14,700 | $20,250 |
| Ducted evaporative cooling, whole house (supply + install) | $2,575installed | $4,150 | $6,450 |
| AC service / clean | $92per unit | $185 | $295 |
| Ducted system service (per system) | $185per unit | $305 | $505 |
| AC repair (minor) | $140per job | $275 | $460 |
| AC repair (major / regas) | $275per job | $550 | $1,100 |
| Removal & disposal | $92per unit | $185 | $320 |
| Split system changeover (like-for-like, incl. old unit removal) | $1,375installed | $1,925 | $2,750 |
| Split system 3.5 kW (supply + install) | $1,300installed | $1,925 | $2,575 |
| Split system install only (customer-supplied unit) | $645installed | $875 | $1,375 |
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Get Adelaide quotes →Prices include GST. Based on Adelaide metro area, October 2026. Outer suburbs may vary.
Air conditioner installation cost in Adelaide (2026): split systems, install only and ducted
Air conditioning installation in Adelaide costs $1,100–$4,150 for a split system supplied and installed, from a 2.5 kW bedroom unit ($1,100–$2,300) to a 7 kW living-area unit ($2,025–$4,150). Installation only, for a unit you have bought yourself, is $645–$1,375. A ducted system for the whole house is $7,350–$20,250 installed.
| Job | Low | Typical | High |
|---|---|---|---|
| Split system 2.5 kW (supply + install) | $1,100 | $1,650 | $2,300 |
| Split system 5 kW (supply + install) | $1,650 | $2,300 | $3,225 |
| Split system 7 kW (supply + install) | $2,025 | $2,950 | $4,150 |
| Split system install only (your unit) | $645 | $875 | $1,375 |
| Multi-split system (2 heads) | $3,675 | $5,050 | $6,900 |
| Ducted system (basic) | $7,350 | $10,100 | $12,900 |
| Ducted system (premium / zoned) | $11,050 | $14,700 | $20,250 |
| Removal & disposal of the old unit | $92 | $185 | $320 |
Split system vs ducted in Adelaide: a split system supplied and installed is $1,100–$4,150 depending on size, or $645–$1,375 to install a unit you have bought; ducted for the whole house is $7,350–$12,900 basic and $11,050–$20,250 zoned. Two or three split systems often cost less than ducted and let you cool only the rooms in use.
What moves an air conditioning installation quote in Adelaide:
- Capacity: the kilowatt rating follows the room size; oversizing wastes money and undersizing runs the unit flat out.
- Back-to-back or long run: a split system with the outdoor unit directly behind the indoor one is the base price; longer pipe runs, a roof-mounted or ground-level outdoor unit on a different wall add labour and pipe.
- Electrical: a dedicated circuit is included in most installed prices; a switchboard upgrade is not.
- Ducted: the number of zones, the ceiling space and the outlet count set the ducted price; two-storey homes cost more to duct.
- Removal: taking out and disposing of an old unit is a separate line ($92–$320).
Ask every Adelaide installer for the unit model, the kilowatt rating and whether the electrical circuit is included; quotes on that basis compare cleanly.
Ducted air conditioning for a whole home in Adelaide
Ducted (central) air conditioning for a 3 or 4-bedroom home in Adelaide
Our Adelaide table prices ducted air conditioning by the kind of system rather than by the number of bedrooms: a basic ducted system is $7,350–$12,900 and a premium zoned system $11,050–$20,250. Zoning splits the house into areas you can cool on their own. Servicing either kind is $185–$505.
These answers use the prices in the table on this page.
What Affects Air Conditioning Costs in Adelaide
System size (kW)
A bedroom needs 2.5 kW ($1,100–$2,300 in Adelaide), a living room 5–7 kW ($1,650–$4,150). Oversizing wastes energy; undersizing means the unit runs constantly. Get a proper sizing assessment.
Split vs ducted
Split systems ($1,100–$4,150) cool individual rooms. Ducted systems ($7,350–$12,900) cool the whole house through ceiling vents — more expensive but more discreet and effective for larger Adelaide homes.
Installation complexity
Back-to-back installs (indoor and outdoor units share a wall) are cheapest. Long pipe runs, multi-storey homes, and restricted access in Adelaide properties increase labour costs.
Brand & efficiency
Premium brands (Daikin, Mitsubishi Electric) cost more than budget brands (Kelvinator, TCL) but offer better efficiency, quieter operation, and longer warranties. South Australian households can get free or discounted high efficiency air-conditioning upgrades from energy retailers under REPS.
Electrical requirements
Most split systems need a dedicated power circuit. If your Adelaide switchboard is full or needs upgrading, that electrical work is extra — ask for it to be priced on the quote.
Season & demand
Summer is peak season for Adelaide aircon installs — expect longer wait times and sometimes higher prices. Book in autumn or winter for the best availability.
How to Save Money on Air Conditioning Cost in Adelaide
Frequently Asked Questions — Air Conditioning Cost in Adelaide
Our Methodology
These are independent estimates from public cost guides, marketplaces and industry rate data, and no tradesperson can influence them, so always get a few quotes. Last reviewed October 2026. Read our full methodology →