Decision summary
What to check first
Best useFast price comparison before quoting
Main variablesSystem size, install difficulty and brand
Quote focusInstalled price, exclusions and rebate impact
Adelaide Energy Guide
Air Conditioning Installation Adelaide — Price Guide
A clear 2026 guide to what air conditioning installation actually costs in Adelaide — split and ducted price ranges, the factors that move the price, and how the REPS rebate brings it down.
Built for quick decisions
Compare the important details before you request a quote.
Pricing and rebate context
Install scope checklist
Adelaide service coverage
Best suited for
- Customers checking whether a split or ducted system makes sense
- Homes comparing upfront cost against running cost
- People wanting to understand what is included in a proper install
Rebate note
Treat rebates as a discount to verify, not a fixed promise. Eligibility and claim rules should be checked against the current program before installation.
Install checklist
- Compare system capacity against room size
- Ask whether electrical work, brackets and pipe runs are included
- Confirm wall penetration, drainage and commissioning details
- Check expected install timing before summer or winter peaks
Quick snapshot
A clear 2026 guide to what air conditioning installation actually costs in Adelaide — split and ducted price ranges, the factors that move the price, and how the REPS rebate brings it down.
Adelaide prices at a glance
All prices include GST and are pre-rebate estimates — your quote depends on site conditions, brand and complexity.
| System type | Capacity | Typical installed price | REPS rebate |
|---|---|---|---|
| Small split | 2–3 kW | $1,200–$2,500 | $300–$500 |
| Medium split | 3.5–5 kW | $1,800–$3,500 | $500–$800 |
| Large split | 7 kW+ | $2,500–$4,500 | $800+ |
| Multi-head split | 2–3 heads | $4,200–$7,500+ | Varies |
| Ducted (small) | 5–7 kW | $5,000–$8,000 | $1,000+ |
| Ducted (large) | 8–14 kW | $7,000–$14,000+ | $1,000–$1,300+ |
Adelaide installs typically run about 10–15% above the eastern capitals because the licensed-technician pool is smaller.
What a proper install includes
When comparing quotes, make sure each one covers the same scope. A complete split-system install includes:
- Indoor and outdoor units
- Refrigerant copper pipework
- A dedicated electrical circuit with RCD protection
- Wall penetration and sealing
- Condensate drainage
- Outdoor unit mounting (pad or bracket)
- R32 refrigerant charging, leak testing and commissioning
- Pipe and cable capping for a tidy finish
If any of these are listed as “extras”, ask why before comparing on price.
What drives the price up or down
- Wall construction. Bluestone and sandstone walls are 300–400 mm thick; core drilling adds about $150–$300, and long pipe runs add cost per metre. Modern homes in newer suburbs are simpler and cheaper.
- Switchboard capacity. Each split needs a dedicated circuit; a full board upgrade can add $1,500–$2,800.
- Brand and model tier. The gap between an entry model and a premium one is roughly $500–$1,500 per unit.
- Timing. September–November is peak demand and January heatwaves bring 4–6 week waits. Booking April–August usually means better availability and pricing.
Split vs ducted
| Factor | Split system | Ducted system |
|---|---|---|
| Upfront cost | $1,200–$4,500 per unit | $5,000–$18,700+ |
| Running cost | Lower (single rooms) | Higher (whole home) |
| Best for | Individual rooms | Whole-home comfort |
| Install time | ~1 day per unit | 2–4 days |
| REPS rebate | $300–$800 | $1,000–$1,300+ |
How the REPS rebate changes the price
The REPS rebate is applied as a direct discount on your quote — you don't pay full price and claim it back. Worked examples:
- Bedroom split (2.5 kW): $2,400 installed − $400 REPS = $2,000.
- Living-area split (5.0 kW): $3,100 installed − $600 REPS = $2,500.
- Whole-home ducted (12 kW): $12,500 installed − $1,100 REPS = $11,400.
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