How much does it cost to install a split system air conditioner in Perth?

For a standard single-room split system, expect roughly $2,000 to $4,000 including unit and installation, depending on capacity and how far the outdoor unit sits from the indoor head. Ducted systems for a full house typically run from $8,000 to $15,000 or more, depending on the number of zones and roof access difficulty.

How often should air conditioning be serviced?

Most manufacturers and contractors recommend a service once a year, ideally before summer, covering filter cleaning, gas pressure checks, and drainage inspection. Units in coastal areas or those running constantly through Perth summers can benefit from a check every 6 to 9 months due to salt air and heavier use.

What should I expect during an installation visit?

A proper installation involves an on-site assessment of room size and layout, confirmation of electrical circuit capacity, mounting the indoor and outdoor units, running refrigerant lines and drainage, and a test run checking cooling and heating performance plus noise levels. It usually takes half a day to a full day depending on system type.

How can I tell if a contractor does quality work?

Ask to see their refrigerant handling licence number and check it's current, request a written quote that names the specific unit model, and look at how they answer questions about sizing for your space rather than just quoting a generic figure. Contractors who explain trade-offs (running cost versus upfront price, ducted versus split) rather than pushing one product are usually more trustworthy.

Air Conditioning Contractor in Perth metropolitan

Perth's climate puts air conditioning to work harder than almost anywhere else in the country, and that means the contractor you pick matters as much as the unit you buy. This category covers the 342 businesses across the metro area that install, service, and repair reverse cycle split systems, ducted units, and commercial air conditioning, from Joondalup and the northern corridor down through Fremantle and Rockingham, and out east to the Hills.

What the job actually involves

A typical air conditioning job falls into one of three buckets: new installation (sizing and fitting a split system or ducted setup to a home or business), servicing and repairs (gas top-ups, filter and coil cleaning, fault diagnosis, compressor and fan motor work), and replacement of aging units that are costing more to run than they're worth. Ducted systems in particular need a contractor who understands roof space constraints common in Perth's older brick-and-tile housing stock, while newer builds often need advice on zoning and multi-head split configurations.

What to look for before you book

Check that the contractor holds a current refrigerant handling licence and electrical contractor's licence, since both are legally required for this work in WA. Ask for a fixed quote that specifies brand, model, and capacity (kW) rather than a vague "supply and install" figure, and confirm what warranty covers labour versus parts. A contractor who inspects your space before quoting, rather than pricing over the phone, is generally a better sign for correct sizing.

How our scoring helps

We rank contractors on responsiveness, licensing and insurance status, the consistency of customer feedback, and how transparent their pricing tends to be. For a shortlist of the strongest performers in the Perth metro area, see our best air conditioning contractors guide. If you want the detail on how we weigh and verify each factor, read our methodology.

Read the ranked guide: Best air conditioning contractors in Perth View on map →

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All air conditioning contractor, ranked by score and relevance

We found 342 businesses offering air conditioning contractor; 341 met the criteria for the scored directory. The order weighs each business's overall score by how much of its reviewed work is air conditioning contractor, so a lower-scored specialist can rank above a higher-scored generalist. Filter and sort below, or open the full map view.

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Enquiries submitted through our contact forms may be passed to partner providers who can do the work, and we may receive a referral fee. Our rankings and scores are based on our published methodology only and are never influenced by referral fees.

Common questions about air conditioning contractor

How much does it cost to install a split system air conditioner in Perth?: For a standard single-room split system, expect roughly $2,000 to $4,000 including unit and installation, depending on capacity and how far the outdoor unit sits from the indoor head. Ducted systems for a full house typically run from $8,000 to $15,000 or more, depending on the number of zones and roof access difficulty.
How often should air conditioning be serviced?: Most manufacturers and contractors recommend a service once a year, ideally before summer, covering filter cleaning, gas pressure checks, and drainage inspection. Units in coastal areas or those running constantly through Perth summers can benefit from a check every 6 to 9 months due to salt air and heavier use.
What should I expect during an installation visit?: A proper installation involves an on-site assessment of room size and layout, confirmation of electrical circuit capacity, mounting the indoor and outdoor units, running refrigerant lines and drainage, and a test run checking cooling and heating performance plus noise levels. It usually takes half a day to a full day depending on system type.
How can I tell if a contractor does quality work?: Ask to see their refrigerant handling licence number and check it's current, request a written quote that names the specific unit model, and look at how they answer questions about sizing for your space rather than just quoting a generic figure. Contractors who explain trade-offs (running cost versus upfront price, ducted versus split) rather than pushing one product are usually more trustworthy.

Guides to choosing air conditioning contractor

How to choose an air conditioning contractor in Perth
What to check before you hire, red flags to watch for, and the questions worth asking so you avoid the most common Perth aircon complaints.