Installed cost · Master bedroom, open-plan living
5kW split system installed cost in Perth
$2,550 – $3,600 inc GST, supply & installed
Typical range for a premium-brand unit on a standard back-to-back install. Our value option comes in under it — every live price is in the table below.
Five kilowatts is where splits graduate from 'fix a room' to 'run the main living space'. Open-plan lounge/dining areas of 30–45 m² sit right in its sweet spot, and the heating ratings at this size (typically 6kW) make it a genuine winter heater. Above 3.5kW every unit needs its own circuit — factor that into any quote you compare.
Compare units
Every 5kW unit we install, side by side
Live supply-and-installed prices for a standard back-to-back install — the same numbers we quote from — with the specs that actually matter lined up so you can pick on the merits. Green marks the strongest figure in each row. Click any unit for its full page.
| Spec | Premium Panasonic RZ 5kW CS-RZ50AKRW | Premium Panasonic RZ 6kW CS-RZ60AKRW | ★ Most popular Premium Panasonic Z 5kW CS-Z50AKRW | Premium Daikin Cora 5kW FTXV50WVMA | ★ Most popular Premium Panasonic Z 6kW CS-Z60AKRW | Premium Daikin Cora 6kW FTXV60WVMA | Premium Daikin Alira X 5kW FTXM50WVMA | Premium Daikin Alira X 6kW FTXM60WVMA | Value Midea Athena 5.1kw specs on Athena page | Value Midea Athena 6kw specs on Athena page |
|---|---|---|---|---|---|---|---|---|---|---|
| Supply + installed | from $2,610best | from $2,795 | from $2,830 | from $2,945 | from $2,995 | from $3,165 | from $3,200 | from $3,460 | from $2,125 | from $2,185 |
| Cooling | 5kW | 6kW | 5kW | 5kW | 6kW | 6kW | 5kW | 6kW | — | — |
| Heating | 6kW | 6.5kW | 6kW | 6kW | 6.5kW | 7.2kW | 6kW | 7.2kW | — | — |
| Cooling range | — | — | — | 1.1–6.7kW | — | 1.1–7.5kW | 1.1–6.7kW | 1.1–7.5kW | — | — |
| EER (cooling efficiency) | 3.29 | 3.23 | 3.29 | 4.39 | 3.23 | 3.95 | 4.42best | 4.05 | — | — |
| COP (heating efficiency) | 3.31 | 3.24 | 3.31 | 4.62 | 3.24 | 4.42 | 4.88best | 4.47 | — | — |
| Energy stars (cooling) | 3★* | 3★* | 3★* | 5★ | 3★* | 4★ | 5.5★best | 4.5★ | — | — |
| Quiet mode | Yes | Yes | Yes | 28 dB(A)best | Yes | 29 dB(A) | 28 dB(A)best | 29 dB(A) | — | — |
| Wi-Fi / app control | Optional adaptor | Optional adaptor | Built-in | Optional adaptor | Built-in | Optional adaptor | Built-in | Built-in | — | — |
| Air purification | Anti-bacterial filter | Anti-bacterial filter | nanoe™ X (24/7) | Deodorising filter | nanoe™ X (24/7) | Deodorising filter | Streamer (built-in) | Streamer (built-in) | — | — |
| Airflow | Adjustable louvres | Adjustable louvres | AEROWINGS twin louvre | Coanda + Intelligent Eye | AEROWINGS twin louvre | Coanda + Intelligent Eye | Coanda + Intelligent Eye | Coanda + Intelligent Eye | — | — |
| Dedicated circuit | Required | Required | Required | Required | Required | Required | Required | Required | — | — |
| Warranty | 5-year parts and compressor | 5-year parts and compressor | 5-year parts and compressor | 5-year parts and labour | 5-year parts and compressor | 5-year parts and labour | 5-year parts and labour | 5-year parts and labour | — | — |
"Best" marks the strongest figure in each row across these units. * average-zone rating; others are Perth's hot zone. Prices are live from our pricing system, supply and installed on a standard back-to-back install, inc GST.
What moves the price inside $2,550 – $3,600
The bottom of the range is a standard back-to-back install, which includes:
- The indoor head and outdoor unit, mounted, levelled, and secured
- Up to 3 metres of insulated refrigerant pipework in neat trunking
- Electrical connection to a suitable existing circuit, with an isolating switch at the outdoor unit
- Condensate drain run to ground level
- Standard outdoor mounting (blocks at ground level, or a wall bracket where specified)
- Vacuum, pressure test, and refrigerant charge to the manufacturer's spec
- Full run test, commissioning, remote demo, and the compliance paperwork
Long pipe runs, two-storey mounting, awkward access and brand tier lift it from there, plus the dedicated circuit every unit over 3.5kW needs. The full anatomy — with worked examples — is in our Perth split system cost guide, or try the cost calculator for your setup.
5kW split systems — common questions
How much does a 5kW split system cost installed in Perth?
$2,550 – $3,600 supply and installed (inc GST) for a premium-brand unit on a standard back-to-back install. The bottom of that range is an easy wall and a mid-tier premium unit; the top is a flagship unit or a more involved install. Our value-tier option (Midea Athena) comes in under it, and large-capacity units above it — the exact live prices for every unit are on this page, and every quote is fixed before work starts.
What size room does a 5kW split system suit?
30 to 45 m² — master bedroom, open-plan living. Insulation, ceiling height and window orientation shift the answer at the margins, which is why we confirm sizing at a free quote rather than guessing from floor area alone.
Does a 5kW split system need a dedicated circuit?
Yes — anything above 3.5kW needs its own circuit from the switchboard, and an older board can need work to take one. We're dual-licensed, so the circuit and any switchboard work are quoted and done by the same team on the same day.
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Get a fixed 5kW install price
We'll confirm the size actually suits your room, pick the right unit for the budget, and quote the whole job — install and electrical — in one fixed price.