Quick Answer
How much does air conditioning cost in Australia? The average cost is $2,500-$7,500 installed for split and ducted systems.
Australia 2026
Air Conditioning Prices
Air conditioning in Australia usually costs $600 to $3,200 for split-system installation, $120 to $280 for a service, and $8,000 to $18,000 for ducted systems. Most homeowners pay about $2,400 for a standard split-system supply-and-install job, with higher prices in Sydney and Perth.
Compare Prices in Your Area →Air Conditioning Prices by Service
National average prices — standard residential installation
| Service | From | Average | Up to |
|---|---|---|---|
| Split System Supply & Install 2.5kW single room — supply and install | $1800 | $2400 | $3200 |
| Split System Install Only Customer-supplied unit — labour only | $600 | $850 | $1200 |
| Ducted System Supply & Install Whole-home system, 10–14kW | $8000 | $12500 | $18000 |
| Multi-Split System 2–4 heads, 1 outdoor unit | $4500 | $6800 | $10000 |
| Cassette Unit Ceiling-mounted — commercial or large room | $3500 | $5200 | $7500 |
| Air Conditioner Service/Clean Annual service, filter clean, coil wash | $120 | $190 | $280 |
| Air Conditioner Repair General fault diagnosis and repair | $180 | $320 | $550 |
| Refrigerant Gas Recharge Top-up refrigerant gas (R32/R410A) | $200 | $300 | $450 |
| Smart Thermostat Installation Wi-Fi thermostat supply and install | $250 | $360 | $500 |
| AC Unit Removal & Disposal Safe decommission and responsible disposal | $150 | $250 | $400 |
| Evaporative Cooler Service Annual service, pad replacement | $180 | $250 | $350 |
| Ducted Zoning System Add zones to existing ducted system | $1500 | $2500 | $4000 |
Based on 12 data points from verified air conditioning contractors. All prices AUD including GST. Last updated March 2026.
Split System vs Ducted vs Multi-Split
Choosing the right system is the biggest cost decision in air conditioning. A split system cools one room, a multi-split handles multiple rooms from a single outdoor unit, and a ducted system conditions the whole home.
Split System (2.5kW)
$1,800–$3,200
Single room — supply, install, and commissioning
Multi-Split (2–4 heads)
$4,500–$10,000
Multiple rooms, one outdoor unit — good middle ground
Ducted System
$8,000–$18,000
Whole home — discreet ceiling outlets, zoning optional
Air Conditioning Prices by State
Prices vary by location. Click a state for detailed city-level pricing.
New South Wales
Sydney
Split system from $1,980
Victoria
Melbourne
Split system from $1,800
Queensland
Brisbane
Split system from $1,700
South Australia
Adelaide
Split system from $1,750
Western Australia
Perth
Split system from $1,950
Tasmania
Hobart
Split system from $1,650
ACT
Canberra
Split system from $1,800
Northern Territory
Darwin
Split system from $2,100
What Affects Air Conditioning Prices?
The quote you receive depends on several factors beyond just the unit itself. Understanding these helps you compare quotes fairly and avoid surprise costs.
Room Size & System Capacity
A 20m² bedroom needs a 2.5kW unit ($1,800–$3,200), while a 60m² open-plan living area requires 7–8kW ($3,000–$5,500). Under-sizing leads to excessive running costs and premature failure. Over-sizing wastes money upfront and can cause short-cycling.
Installation Complexity
Back-to-back installations (indoor and outdoor unit on the same wall) are cheapest. Piping runs over 3 metres, multi-storey installations, or units requiring roof-mounted outdoor brackets add $300–$800. If a new dedicated circuit from the switchboard is needed, add $350–$600.
Insulation & Building Envelope
Poorly insulated homes need larger systems to achieve the same comfort. Adding ceiling insulation ($1,500–$3,000 for a typical home) can allow you to downsize the AC system by 1–2kW, saving $500–$1,500 on the unit plus ongoing electricity costs. Always insulate before sizing AC.
Location & Climate Zone
Darwin and North Queensland need cooling-focused systems running 8+ months a year. Melbourne and Hobart need reverse-cycle units for heating. Labour rates in Sydney and Perth are 15–25% higher than regional areas. Coastal properties may need corrosion-resistant outdoor units (add $200–$400).
Ceiling & Roof Access
Ducted systems require roof space for the indoor unit and ductwork. Homes with flat roofs, limited ceiling cavities, or cathedral ceilings are significantly more expensive to duct — sometimes ruling out ducted entirely. Multi-split becomes the best alternative in these situations.
Brand & Energy Rating
Premium brands (Daikin, Mitsubishi Electric, Fujitsu) cost $400–$800 more upfront but deliver higher energy star ratings, quieter operation, and longer warranties. A 7-star unit uses ~30% less electricity than a 3-star unit — the payback period is typically 2–4 years for daily use.
What’s Included vs What Costs Extra
Most “supply and install” quotes cover the essentials, but extras add up. Here’s what to check.
Usually Included
- ✓ Indoor and outdoor unit supply
- ✓ Standard back-to-back installation (up to 3m pipe run)
- ✓ Mounting brackets
- ✓ Electrical connection to existing dedicated circuit
- ✓ Commissioning and performance test
- ✓ Manufacturer warranty registration
- ✓ Basic pipe cover (1m white PVC)
Common Extras (Ask About These)
- ⚠ Extended pipe run beyond 3m: +$50–$80/metre
- ⚠ New dedicated circuit from switchboard: +$350–$600
- ⚠ Multi-storey installation/scaffolding: +$300–$800
- ⚠ Roof-mounted outdoor unit bracket: +$150–$350
- ⚠ Removal and disposal of old unit: +$150–$400
- ⚠ Premium pipe cover (colour-matched): +$80–$150
- ⚠ Wi-Fi controller module: +$150–$300
Running Costs: What Will Your AC Cost to Operate?
Installation is only part of the cost. Running costs vary significantly by system type, size, and usage pattern. Based on average 2026 electricity rates of $0.33/kWh.
| System Type | Per Hour | 8hrs/Day | Annual Est. |
|---|---|---|---|
| 2.5kW Split (7-star) | $0.15–$0.25 | $1.20–$2.00 | $220–$360 |
| 5kW Split (6-star) | $0.30–$0.50 | $2.40–$4.00 | $430–$720 |
| 7kW Split (5-star) | $0.50–$0.80 | $4.00–$6.40 | $720–$1,150 |
| Ducted 12kW (zoned) | $0.80–$1.40 | $6.40–$11.20 | $1,150–$2,000 |
| Evaporative Cooler | $0.05–$0.15 | $0.40–$1.20 | $70–$220 |
Annual estimates assume 180 cooling days/year, 8 hours/day average use. Actual costs vary by climate zone, insulation, thermostat setting, and electricity tariff. Inverter systems cost less at part-load.
Best Time to Install Air Conditioning
Timing your installation right can save money and reduce wait times.
Autumn (Mar–May)
★ Best Value
Summer rush is over. Installers have availability, and some offer off-season discounts of 5–15%. Units are in stock. 1–2 week lead times typical.
Winter (Jun–Aug)
Good Value
Low demand for cooling installs. Good time for reverse-cycle systems if you want heating too. End-of-line models discounted. Longest wait will be for ducted work.
Spring (Sep–Nov)
Book Early
Demand ramps up fast. By October, popular installers are booked 3–4 weeks out. Prices start rising. Book in September for best availability.
Summer (Dec–Feb)
Peak Prices
Highest demand, longest waits (4–6+ weeks), premium pricing on urgent installs. Emergency repairs can cost 30–50% more. Plan ahead to avoid this crunch.
7 Ways to Save on Air Conditioning Costs
1. Install in autumn or winter
Off-peak installation can save 5–15% on labour and you’ll avoid the summer rush. Installers are more likely to negotiate on price when their calendar is quiet.
2. Get at least 3 quotes
Prices vary by $500–$1,500 for the same job. Compare like-for-like: same brand, same kW rating, same installation scope. Ask each installer to itemise extras.
3. Insulate first, then size your AC
Good ceiling insulation reduces the system size you need by 1–2kW, saving $500–$1,500 upfront and reducing running costs by 20–40% long-term.
4. Choose back-to-back installation
Positioning the indoor unit on an external wall keeps pipe runs short (under 3m), which is standard and included in most quotes. Longer runs add $50–$80/metre.
5. Check for government rebates
Some states offer rebates for upgrading to energy-efficient systems. Victoria’s VEU scheme and NSW’s ESS can provide $200–$1,000 in rebates on qualifying installations. Check your state’s energy efficiency website.
6. Service annually to prevent costly repairs
A $120–$280 annual service prevents issues that lead to $300–$550 repair bills. Clogged filters alone can increase running costs by 15–25%. It also extends system life from 10 to 15+ years.
7. Consider a solar system to offset running costs
AC is often the biggest electricity draw in Australian homes. A 6.6kW solar system ($4,500–$8,000 after STCs) can offset 60–80% of daytime AC running costs, paying for itself in 3–5 years.
Inverter vs Non-Inverter — Which Should You Buy?
Virtually all new split systems sold in Australia are inverter models, and for good reason. Inverter technology adjusts compressor speed to match the cooling or heating demand, making them 30–50% more energy efficient than fixed-speed units. The upfront cost difference is small — typically $100–$200 — and pays back within 1–2 seasons of use. Non-inverter units are rarely available new in Australia as of 2026.
Budget Brands (Kelvinator, Carrier, Hisense)
$1,800–$2,400
2.5kW supply and install. Adequate for small to medium rooms. 5-year parts warranty typical. Good option for investment properties and secondary rooms where runtime is low.
Premium Brands (Daikin, Mitsubishi, Fujitsu)
$2,400–$3,500+
2.5kW supply and install. Higher energy star ratings, quieter operation, and better longevity (15+ years). Preferred for living areas and bedrooms where the unit runs daily. Worth the premium for owner-occupiers.
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Air Conditioning Price Trends (2024–2026)
Year-over-year average cost comparison
| Service | 2024 Avg | 2025 Avg | 2026 Avg | 2-Year Change |
|---|---|---|---|---|
| Split System Install (2.5kW) | $1,800 | $1,950 | $2,100 | +16.7% |
| Ducted System Install | $9,500 | $10,200 | $10,800 | +13.7% |
| Service / Re-Gas | $180 | $200 | $220 | +22.2% |
Seasonal Patterns
Peak demand occurs in spring and summer (October–February) when wait times can stretch to 4–6 weeks. Winter installs are typically 10–15% cheaper with faster scheduling. Book in autumn for the best price before the summer rush.
Regional Differences
Sydney and Brisbane have the highest demand due to humid summers, pushing prices above the national average. Adelaide consistently has the lowest install costs among capital cities. Perth prices rose 8% year-on-year, driven by the ongoing housing construction boom.
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Get Free Quotes in Your Area →Common Questions
How much does it cost to install a split system air conditioner in Australia?
A 2.5kW split system including supply and installation typically costs $1,800–$3,200 for a quality inverter unit. Install-only (customer-supplied unit) costs $600–$1,200 for standard installations. Prices increase for larger systems — a 7.1kW unit for a large open-plan area can cost $3,000–$5,500 all-in. Sydney and Perth tend to sit at the top of the range. Get at least 3 quotes from licensed refrigeration mechanics (ARCtick licence required).
How much does a ducted air conditioning system cost?
Ducted systems for a full home (10–14kW) typically cost $8,000–$18,000 installed. The large range reflects home size, number of zones, ceiling access, and insulation quality. Zoning adds $1,500–$4,000 but delivers significant running cost savings by only conditioning occupied areas. Ducted is most cost-effective when installed during construction — retro-fitting in an existing home is more expensive due to access challenges.
How often should I service my air conditioner?
Annual servicing is recommended for most Australian climates — ideally in spring before the cooling season. A professional service ($120–$280) includes cleaning the filters, washing the evaporator and condenser coils, checking refrigerant levels, inspecting electrical connections, and testing system performance. Ducted systems should also have duct connections and dampers inspected every 2–3 years. Regular servicing extends system life from 10 years to 15+ years and maintains energy efficiency.
What does a refrigerant gas recharge cost?
Refrigerant gas recharge (top-up) costs $200–$450 for most residential split systems. Only a licensed ARCtick-certified technician can legally handle refrigerants in Australia. Note that needing a gas top-up usually means the system has a leak — a responsible technician will locate and repair the leak before recharging, or the refrigerant will simply escape again. Leak detection and repair adds $150–$400 to the job.
Do I need an electrician or an air conditioning installer?
In Australia, air conditioning installation requires two licences: an ARCtick refrigeration licence (to handle refrigerants) and an electrical contractor's licence (for electrical connections). Most specialist AC installers hold both. However, if a new dedicated circuit is required from your switchboard, your installer may subcontract a licensed electrician for that portion. Always confirm your installer holds the correct licences before work begins — licences can be verified through the state electrical safety regulator.
What size air conditioner do I need for my room?
As a rough guide: 2.5kW for rooms up to 20m², 3.5kW for 20–30m², 5kW for 30–45m², and 7–8kW for 45–65m². These assume standard 2.4m ceilings and moderate insulation. Rooms with large windows, poor insulation, north/west-facing glass, or high ceilings may need 20–30% more capacity. Under-sizing is the most common installation mistake — it leads to the unit running constantly, higher electricity bills, and premature wear.
How long does a split system installation take?
A standard back-to-back split system installation takes 2–4 hours for a single unit. Multi-storey installations or longer pipe runs may take 4–6 hours. Multi-split systems (2–4 heads) typically take a full day. Ducted system installations take 1–3 days depending on the number of zones and accessibility of the ceiling cavity. Your installer should advise on timing during the quoting process.
Is evaporative cooling cheaper than refrigerated air conditioning?
Yes — evaporative coolers cost $3,000–$6,000 to install (ducted whole-home) and run at a fraction of the electricity cost (roughly $0.05–$0.15/hr vs $0.80–$1.40/hr for ducted refrigerated). However, evaporative cooling only works well in dry climates (Adelaide, Perth, inland areas). In humid cities like Brisbane, Sydney, and Darwin, evaporative coolers are ineffective. They also can’t heat, so you’d still need a separate heating solution for winter.
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How We Get These Prices
Prices aggregated from 180+ verified quotes and published rate cards from licensed HVAC technicians and air conditioning installers across Australia, the UK, USA, Canada, and New Zealand. Based on 340 data points across 85 providers in 45 cities, our figures reflect what homeowners actually pay for split system installations, ducted systems, repairs, and routine servicing.
Methodology: We collect quoted rates from licensed HVAC technicians, cross-reference with manufacturer recommended retail pricing and energy efficiency rebate data, and verify against real customer invoices. Data last verified March 2026. We refresh quarterly to account for seasonal demand spikes, refrigerant cost changes, and new energy efficiency regulations.
All prices are indicative guides. Your actual cost depends on system size, brand, installation complexity, and your location. We recommend getting at least three quotes before committing.