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Split system installation · Harrisdale 6112

Split system installation in Harrisdale

Harrisdale is one of Perth's newer south-east estates, and its modern double-storey homes ask more of an aircon install than a single-storey weatherboard ever did. That's the kind of job we're built for.

  • ✓ Free quotes, upfront fixed pricing
  • ✓ Dual-licensed: aircon + electrical
  • ✓ Workmanship warranty

Split system air conditioning for Harrisdale homes

Most of Harrisdale went up from the 2000s onward, so the housing here is dominated by modern brick-and-render homes on tighter estate blocks, a good share of them double-storey. That layout shapes nearly every split system installation Harrisdale homeowners ask us about. Cooling a downstairs open-plan kitchen, dining and living zone often calls for a larger single head or a multi-head setup, while upstairs the bedrooms and that west-facing master need their own heads to stay comfortable through a long inland afternoon. We plan the indoor positions and outdoor condenser location together so the run is efficient and the unit isn't baking in full sun.

Double-storey routing is where a lot of installers cut corners and a tidy job earns its keep. Getting refrigerant lines and drainage from an upstairs bedroom down to a ground-level condenser without ugly trunking running across the render takes planning, and we route through the roof space and cavities wherever the build allows. Harrisdale sits inland rather than on the coast, so salt corrosion isn't the concern here that it is by the water; the real enemy is the heat. We position outdoor units for airflow and shade so they hold their efficiency when summer settles in over the corridor.

Being dual-licensed in both air conditioning and electrical means the whole job stays with one team. Plenty of larger Harrisdale homes running multiple heads need a dedicated circuit run from the switchboard, and because we're licensed electricians too, we handle that in-house rather than booking a separate sparky. Whether it's a fresh install in a newer build, adding a head to a growing family home, or swapping out a tired old unit, we give honest, upfront advice on air conditioning Harrisdale residents can rely on.

Installation cost

Split system installation prices in Harrisdale

Real supply-and-installed ranges for a standard back-to-back install (GST inc.). See the full breakdown in our Perth split system cost guide.

Unit size Suits Supply + installed
2kW Nursery, study, small bedroom $1,490 – $2,225
2.5kW Small bedroom, study $1,580 – $2,300
3.5kW Standard bedroom, small living $1,770 – $2,565
4.2–4.6kW Large bedroom, medium living room $2,380 – $3,145
5kW Master bedroom, open-plan living $2,125 – $3,260
6kW Large living or open-plan area $2,185 – $3,525
7kW Large open-plan living/kitchen $2,310 – $3,900
8–8.5kW Very large open-plan zones $2,575 – $4,545
9–9.5kW The biggest single-zone spaces $4,315 – $5,140
Multi-head Several rooms, one outdoor unit $4,500 – $11,000+

We also install around Harrisdale

Otter Air installs split systems right across the Perth metro. Nearby areas we service:

Not your suburb? We cover all of greater Perth — see all areas or read about our split system installation service.

Rated 5.0 from 25 Google reviews

Perth homeowners have trusted us for 10+ years. Here's what they say.

Real five-star reviews from Perth homeowners — see why locals choose Otter Air for air conditioning and electrical work.

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“Excellent Air Conditioning Installation Service! ⭐️⭐️⭐️⭐️⭐️ When looking to install 2 new aircons at my house, I was recommended to use Otter Air & Electrical and I couldn't be happier with the service provided by Matt and his assistant. From the initial enquiry through to the completion of the installation, the entire experience was seamless, professional and efficient. Matt responded promptly to emails, arrived exactly on time as scheduled, highly professional and the whole experience was stress-free. On the quote, he provided a few options with breakdown details of what is included in the price and makes it easier to make the decision. On the day of installation, the process was completed on schedule and I'm very happy with the quality of the work. They took great care to keep the work area clean and tidy throughout the job, and once finished, they thoroughly cleaned up, leaving everything spotless. Thank you very much, Matt and team and I would highly recommend this company to anyone looking for a reliable, professional and efficient aircon company.”

Free split system quote in Harrisdale

We'll size the right unit for your room, give you a fixed, upfront price, and handle any electrical work in-house.

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