How much does air conditioning cost in Sydney?
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Air conditioning installation in Sydney costs $1,375–$2,875 for a small 2.5 kW split system, $2,075–$4,025 for a 5 kW unit (the most popular size for living rooms), and $2,525–$5,200 for a large 7 kW system. Ducted whole-home systems cost $9,200–$16,100 installed.
We've compiled pricing from HVAC installers across Sydney as of October 2026. All prices include supply, installation, and GST.
Detailed Pricing — Air Conditioning Cost in Sydney 2026
Cooling an office, shop or warehouse instead? See our commercial air conditioning cost guide for Sydney.
| Service | Low | Typical | High |
|---|---|---|---|
| Split system 2.5 kW (supply + install) | $1,375installed | $2,075 | $2,875 |
| Split system 5 kW (supply + install) | $2,075installed | $2,875 | $4,025 |
| Split system 7 kW (supply + install) | $2,525installed | $3,675 | $5,200 |
| Split system 9 kW (supply + install) | $3,450installed | $4,825 | $6,300 |
| Multi-split system (2 heads) | $4,600installed | $6,300 | $8,600 |
| Multi-split system (4 heads) | $8,050installed | $9,800 | $13,800 |
| Ducted system (basic) | $9,200installed | $12,650 | $16,100 |
| Ducted system (premium/zoned) | $13,800installed | $18,400 | $25,300 |
| Ducted evaporative cooling, whole house (supply + install) | $3,225installed | $5,200 | $8,050 |
| AC service / clean | $115per unit | $230 | $370 |
| Ducted system service (per system) | $230per unit | $380 | $630 |
| AC repair (minor) | $170per job | $345 | $575 |
| AC repair (major / regas) | $345per job | $690 | $1,375 |
| Removal & disposal | $115per unit | $230 | $400 |
| Split system changeover (like-for-like, incl. old unit removal) | $1,725installed | $2,425 | $3,450 |
| Split system 3.5 kW (supply + install) | $1,600installed | $2,425 | $3,225 |
| Split system install only (customer-supplied unit) | $805installed | $1,100 | $1,725 |
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Prices include GST. Based on Sydney metro area, October 2026. Outer suburbs may vary.
How AC Installation Costs Vary Across Sydney
Where you live in Sydney affects your installation cost in several ways: property type, roof cavity access, electrical infrastructure, and local labour rates all contribute to the final quote.
Inner City & Eastern Suburbs
Terrace houses and older apartments often lack roof cavity space for ducted systems, making split or multi-split the only viable options. Heritage restrictions in some areas limit where outdoor units can be placed. Strata approval is required for apartment installations and can add 2–6 weeks to the timeline. Limited parking and difficult access for large equipment increase labour costs. Wall-mounted splits on terraces often need longer pipe runs, which add to a standard installation.
North Shore & Northern Beaches
Mix of post-war homes (good roof cavities for ducted) and newer builds. Coastal suburbs experience salt air corrosion — specify coastal-rated outdoor units (Daikin, Mitsubishi Electric, and Fujitsu all offer coastal models). Steep blocks may require crane hire for outdoor unit placement. Generally good access for standard installations.
Western Sydney
Newer homes with modern electrical infrastructure and accessible roof cavities — the most straightforward installations in Greater Sydney. Western Sydney experiences some of the highest temperatures in the metro area (Penrith and Richmond regularly hit 40°C+), so a correctly sized system is critical. Strong competition among local HVAC installers keeps prices competitive. Flat rooflines common in newer estates provide easy ducted system access.
Hills District & Sutherland Shire
Predominantly 1980s–2000s homes with adequate roof space and standard electrical. Good value for ducted installations. Multi-storey homes in the Hills may need a more powerful system to handle the upper floor heat load — hot air rises, and a poorly zoned system will struggle upstairs while freezing the ground floor. Shire homes near the coast should consider coastal-rated outdoor units.
What You'll Actually Pay — System-by-System Breakdown
Here's what common air conditioning installations cost in Sydney, supply and install, from the rows in our Sydney table for 2026.
Single split system — bedroom or home office (2.5–3.5kW)
In our Sydney table a 2.5 kW split is $1,375–$2,875 and a 3.5 kW split $1,600–$3,225, supplied and installed — usually a back-to-back install where the indoor and outdoor units share a wall. Brands like Mitsubishi Electric, Daikin, and Fujitsu dominate this segment. If the outdoor unit needs to be placed further away (long pipe run), or your switchboard doesn't have a spare slot for a dedicated circuit, expect to pay more.
Large split system — living room (7–9kW)
A 7 kW split is $2,525–$5,200 and a 9 kW split $3,450–$6,300 in our Sydney table, with higher installation labour due to heavier equipment and larger pipe diameter. These units typically need a dedicated 20-amp circuit. Consider an inverter model for significant energy savings over fixed-speed units.
Multi-split system — 2–4 rooms, one outdoor unit
Ideal for homes where ducted isn't feasible (no roof cavity, apartments, heritage properties). One outdoor compressor connects to 2–4 indoor wall units: our Sydney table prices a 2-head system at $4,600–$8,600 and a 4-head system at $8,050–$13,800, with 3-head systems in between. Installation is more complex than single splits, requiring longer pipe runs and electrical planning. The outdoor unit is larger and heavier, so placement is important for noise and airflow.
Ducted system — whole home, 3–4 bedrooms
The premium option for whole-home comfort. Includes the indoor unit (installed in roof cavity), outdoor compressor, ductwork to each room, zone controller, and thermostat. Our Sydney table prices a basic ducted system at $9,200–$16,100 and a premium or zoned system at $13,800–$25,300. Zoning (controlling which rooms are active) costs more up front but lets you cool only the rooms in use. Double-storey homes or properties needing extensive ductwork sit at the top of the range.
Replacing an existing system
If you're replacing an existing system, you save on electrical work (circuit already exists), mounting brackets, and sometimes pipe runs. A like-for-like split system changeover, including removing the old unit, is $1,725–$3,450 in our Sydney table; removal and disposal on its own is $115–$400 per unit. If replacing a ducted system, existing ductwork can often be reused if it's in good condition — have it inspected for leaks and insulation integrity.
Air conditioning installation cost in Sydney (2026): split systems, install only and ducted
Air conditioning installation in Sydney costs $1,375–$5,200 for a split system supplied and installed, from a 2.5 kW bedroom unit ($1,375–$2,875) to a 7 kW living-area unit ($2,525–$5,200). Installation only, for a unit you have bought yourself, is $805–$1,725. A ducted system for the whole house is $9,200–$25,300 installed.
| Job | Low | Typical | High |
|---|---|---|---|
| Split system 2.5 kW (supply + install) | $1,375 | $2,075 | $2,875 |
| Split system 5 kW (supply + install) | $2,075 | $2,875 | $4,025 |
| Split system 7 kW (supply + install) | $2,525 | $3,675 | $5,200 |
| Split system install only (your unit) | $805 | $1,100 | $1,725 |
| Multi-split system (2 heads) | $4,600 | $6,300 | $8,600 |
| Ducted system (basic) | $9,200 | $12,650 | $16,100 |
| Ducted system (premium / zoned) | $13,800 | $18,400 | $25,300 |
| Removal & disposal of the old unit | $115 | $230 | $400 |
Supply and install vs install only in Sydney: buying the unit through the installer ($1,375–$5,200 for 2.5–7 kW) usually costs little more than buying it yourself and paying $805–$1,725 for the installation, and keeps the warranty with one party. The best price on air conditioning in Sydney is normally a standard back-to-back install of a mid-range brand, not the cheapest unit.
What moves an air conditioning installation quote in Sydney:
- 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 ($115–$400).
Ask every Sydney installer for the unit model, the kilowatt rating and whether the electrical circuit is included; three quotes on that basis compare cleanly.
Replacing a split system in Sydney
A like-for-like split system changeover in Sydney
Swapping an old split system for a new one of the same kind is $1,725–$3,450 in our Sydney table, including taking the old unit away. If you supply the new unit yourself, installation alone is $805–$1,725, and removing and disposing of an old unit on its own is $115–$400.
These answers use the prices in the table on this page.
What Affects Air Conditioning Costs in Sydney
System size (kW)
A bedroom needs 2.5 kW ($1,375–$2,875 in Sydney), a living room 5–7 kW ($2,075–$5,200). Oversizing wastes energy; undersizing means the unit runs constantly. Get a proper sizing assessment.
Split vs ducted
Split systems ($1,375–$5,200) cool individual rooms. Ducted systems ($9,200–$16,100) cool the whole house through ceiling vents — more expensive but more discreet and effective for larger Sydney 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 Sydney 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. Under the NSW Energy Savings Scheme, eligible households can get an upfront discount of up to $550 for installing a new 6kW air conditioner, or up to $560 for replacing an old one with a 6kW split system. NSW homeowners and landlords with a combined household income of up to $210,000 can get a zero-interest Home Energy Saver loan of up to $15,000 for a reverse cycle air conditioner.
Electrical requirements
Most split systems need a dedicated power circuit. If your Sydney 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 Sydney 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 Sydney
Frequently Asked Questions — Air Conditioning Cost in Sydney
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 →