Melbourne's weather doesn't mess around — 40-degree summer days followed by freezing winter mornings. If you're finally pulling the trigger on air conditioning, the first question is what it's going to cost.
Here's the real pricing for air conditioning installation in Melbourne in 2026.
Air Conditioning Installation Cost — Melbourne 2026
| System Type | Supply + Install Cost | Best For |
|---|---|---|
| Single split system | $1,800 – $4,800 | Individual rooms, apartments, budget-friendly |
| Multi-split system (2–4 heads) | $4,200 – $9,000 | Multiple rooms, townhouses |
| Ducted system | $12,000 – $20,000+ | Whole-home cooling and heating |
For most Melbourne homeowners, a single split system installed in the living room runs between $2,000 and $3,500. That includes the unit and standard installation.
Split System Costs Breakdown
Split systems are the most popular choice in Melbourne — affordable, efficient, and they handle both heating and cooling (reverse-cycle).
Unit prices by size:
| Capacity | Room Size | Unit Price (Approx.) |
|---|---|---|
| 2.5kW | Small bedroom | $700 – $1,200 |
| 3.5kW | Bedroom / study | $900 – $1,500 |
| 5.0kW | Living room | $1,200 – $2,200 |
| 7.0kW | Large living area | $1,800 – $3,000 |
| 9.0kW+ | Open plan | $2,500 – $4,500 |
Installation labour: A standard back-to-back install (indoor and outdoor units on the same wall) costs $800–$1,500 in labour. More complex installs — long pipe runs, difficult access, multi-storey homes — push towards $1,500–$2,500.
Ducted Air Conditioning Costs
Ducted systems cool your entire home through ceiling vents. They're the premium option — more expensive upfront but seamless once installed.
Typical installed costs:
| Home Size | Ducted System Cost |
|---|---|
| Small (2–3 bedroom) | $9,000 – $13,000 |
| Medium (3–4 bedroom) | $12,000 – $17,000 |
| Large (4+ bedroom) | $17,000 – $25,000+ |
Zoning (being able to control which rooms get air) adds $1,000–$3,000 to the bill but saves significantly on running costs because you're not cooling empty rooms.
What Affects Your Installation Cost?
System type and size: Bigger systems cost more. A 2.5kW bedroom unit is a fraction of the cost of a 9kW open-plan unit.
Brand: Budget brands (Kelvinator, Gree) are cheaper but typically have shorter warranties and lower efficiency. Mid-range (Fujitsu, Panasonic) offers solid value. Premium (Daikin, Mitsubishi Electric, Mitsubishi Heavy Industries) costs more upfront but delivers better energy efficiency and longevity.
Installation complexity: Back-to-back installs are cheapest. Long pipe runs, second-storey installs, or units mounted in tight spaces all add labour time and cost.
Electrical upgrades: Older Melbourne homes may need a switchboard upgrade to handle a new air conditioning circuit. This can add $500–$1,500 to the job.
Number of units: If you're putting splits in multiple rooms, most installers offer a discount per unit on multi-unit jobs.
Running Costs
It's not just the install — you'll be paying to run it every day.
A typical split system costs around $0.25–$0.35 per hour to run in Melbourne. For a reverse-cycle unit running 6 hours a day in summer, that's roughly $45–$65 per month on your electricity bill.
Ducted systems cost more to run overall, but zoning reduces this significantly if you're only cooling occupied rooms.
Look for units with high energy star ratings (ZERL labels). The extra upfront cost pays for itself within a few years through lower power bills.
Victorian Energy Upgrades (VEU) Rebate
The Victorian Government offers rebates through the VEU program when you upgrade to energy-efficient air conditioning. Rebates vary, but they can knock several hundred dollars off the install cost.
Don't trust installers who advertise "zero cost" air conditioning — the rebate reduces the price, it doesn't eliminate it. If someone promises free AC, read the fine print carefully.
Red Flags in AC Quotes
- No site inspection before quoting. A proper installer needs to see your home to size the system correctly. Phone-only quotes are guesswork.
- Oversized or undersized units. An oversized unit cycles on and off constantly (wasting energy). An undersized unit never reaches temperature. Both cost you money.
- "Splits only" licence. Some electricians hold restricted split system licences that take less than a week of training. Ask if your installer is a fully licenced HVAC technician.
- No warranty details. You should get a manufacturer warranty on the unit and a separate workmanship warranty from the installer.
Maintenance Costs
Split systems should be serviced annually. A standard service costs $100–$200 and includes filter cleaning, refrigerant check, and general inspection. Skipping this shortens your unit's lifespan and reduces efficiency.
Budget $150–$300 per year for maintenance across all your units.
Is Your AC Quote Fair?
Air conditioning quotes can vary by $1,000+ in Melbourne for the exact same unit and install.
Upload your air conditioning quote to TradieTruth for an instant comparison against real Australian pricing. Free verdict — know where you stand before you commit.
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