Installed cost · Large open-plan living/kitchen
7–8kW split system installed cost in Perth
$2,960 – $4,500 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, and large-capacity units above it — every live price is in the table below.
The big singles: one wall unit covering a full open-plan living/kitchen zone. At this size the install matters as much as the unit — airflow throw, wall position and the dedicated circuit all need to be right, and two-storey homes add access cost. Compare quotes on the whole job, not the box price.
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Every 7–8kW 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 7.1kW CS-RZ71AKRW | ★ Most popular Premium Panasonic Z 7.1kW CS-Z71AKRW | Premium Daikin Cora 7.1kW FTXV71WVMA | Premium Panasonic RZ 8kW CS-RZ80AKR | Premium Daikin Alira X 7.1kW FTXM71WVMA | ★ Most popular Premium Panasonic Z 8kW CS-Z80AKR | Premium Panasonic RZ 9.5kW CS-RZ95AKR | Premium Daikin 8.5kW FTXM85WVMA | ★ Most popular Premium Panasonic Z 9.5kW CS-Z95AKR | Premium Daikin 9.5kW FTXM95WVMA | Premium Daikin 8kW FTXV80WVMA | Premium Daikin 9kW FTXV90WVMA | Value Midea Athena 7kw specs on Athena page | Value Midea Athena 8kw specs on Athena page |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Supply + installed | from $3,115best | from $3,340 | from $3,510 | from $3,675 | from $3,830 | from $3,960 | from $4,115 | from $4,455 | from $4,455 | from $5,035 | quoted on site | quoted on site | from $2,310 | from $2,575 |
| Cooling | 7.1kW | 7.1kW | 7.1kW | 8kW | 7.1kW | 8kW | 9.5kW | 8.5kW | 9.5kW | 9.5kW | 8kW | 9kW | — | — |
| Heating | 8kW | 8kW | 8kW | 9kW | 8kW | 9kW | 10.3kW | 9kW | 10.3kW | 10.3kW | 9kW | 10.3kW | — | — |
| Cooling range | — | — | 2–8.9kW | — | 2–8.9kW | — | — | 2–10.5kW | — | 2–11.2kW | 2–10.5kW | 2–11.2kW | — | — |
| EER (cooling efficiency) | 3.43 | 3.43 | 3.68 | 3.26 | 3.55 | 3.26 | 3.3 | 3.62 | 3.33 | 3.39 | 3.69best | 3.4 | — | — |
| COP (heating efficiency) | 3.45 | 3.45 | 4.26best | 3.28 | 4.08 | 3.28 | 3.65 | 3.38 | 3.69 | 3.32 | 3.27 | 3.27 | — | — |
| Energy stars (cooling) | 3.5★* | 3.5★* | 3.5★ | 3.5★* | 4★best | 3.5★* | 3★* | 3.5★ | 3★* | 3.5★ | 3.5★ | 3★ | — | — |
| Quiet mode | Yes | Yes | 30 dB(A)best | Yes | 30 dB(A)best | Yes | Yes | 35 dB(A) | Yes | 36 dB(A) | 37 dB(A) | 38 dB(A) | — | — |
| Wi-Fi / app control | Optional adaptor | Built-in | Optional adaptor | Optional adaptor | Built-in | Built-in | Optional adaptor | Optional adaptor | Built-in | Optional adaptor | Optional adaptor | Optional adaptor | — | — |
| Air purification | Anti-bacterial filter | nanoe™ X (24/7) | Deodorising filter | Anti-bacterial filter | Streamer (built-in) | nanoe™ X (24/7) | Anti-bacterial filter | Deodorising filter | nanoe™ X (24/7) | Deodorising filter | Deodorising filter | Deodorising filter | — | — |
| Airflow | Adjustable louvres | AEROWINGS twin louvre | Coanda + Intelligent Eye | Adjustable louvres | Coanda + Intelligent Eye | AEROWINGS twin louvre | Adjustable louvres | Adjustable louvres | AEROWINGS twin louvre | Adjustable louvres | Adjustable louvres | Adjustable louvres | — | — |
| Dedicated circuit | Required | Required | Required | Required | Required | Required | Required | Required | Required | Required | Required | Required | — | — |
| Warranty | 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 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 $2,960 – $4,500
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.
7–8kW split systems — common questions
How much does a 7–8kW split system cost installed in Perth?
$2,960 – $4,500 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 7–8kW split system suit?
45 to 65 m² — large open-plan living/kitchen. 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 7–8kW 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 7–8kW 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.