Split System Installation Cost in Perth (2026)
Perth's double-brick walls and hot summers shape a split-system install.
Your split system installation details
Your estimate sits within the typical range.
The unit itself is often less than half the cost, installation, electrical and pipe work make up the rest, so a cheap unit badly installed is false economy.
Where the money goes
Estimated breakdown for your configuration
💰 Ways to save
- A back-to-back install on an existing circuit is the cheapest configuration.
- Buy the right capacity for the room rather than oversizing to be safe.
How we estimate this
A split system install in Australia typically costs $900 to $5,000 in 2026 depending on capacity and install type. A small bedroom unit back-to-back is cheapest; a large open-plan unit with a long pipe run and new circuit reaches the top.
Pricing reviewed: October 2026.
What a split system installation costs in Perth
Perth's hot, dry summers make cooling a priority and the install market is active, but the city's double-brick construction is the cost factor: core-drilling through double-brick walls for the pipe run is harder and slower than passing through a timber-frame cavity, so a Perth install can carry a little more labour than a frame-home equivalent. Many homes run multi-head systems to cool the open-plan living of the newer outer suburbs.
The dry climate means cooling, not heating, is usually the focus, and labour sits around the national average. Isolation adds a little to hardware costs, and an older home may need a switchboard upgrade to carry the load, but for a standard install in Perth's prevailing housing the active installer market and simple single-storey layouts keep the price reasonable, climbing with multi-head systems and difficult wall penetrations.
Compare against the national picture: Split System Installation Cost in Australia →
Split System Installation Cost in other cities
Frequently asked questions
How much does split system installation cost in Australia?
Typically $900 to $5,000 in 2026 depending on capacity and install type. A small back-to-back install is cheapest; a large unit with a long pipe run costs the most.
What size split system do I need?
Roughly 2.5kW for a small bedroom, 3.5 to 5kW for a living room, and 6kW+ for open-plan. Match it to the room, oversizing wastes energy.