Installed cost · Standard bedroom, small living
3.5kW split system installed cost in Perth
$2,020 – $2,900 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.
The most-installed size in Perth. A 3.5kW unit carries a standard bedroom through a 40°C afternoon with headroom to spare, and handles small living rooms and big home offices too. It's the size where sizing mistakes are most common in both directions — measure the room before you buy the special.
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Every 3.5kW 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 3.5kW CS-RZ35AKRW | ★ Most popular Premium Panasonic Z 3.5kW CS-Z35AKRW | Premium Panasonic RZ 4.2kW CS-RZ42AKRW | Premium Daikin Cora 3.5kW FTXV35WVMA | Premium Daikin Alira X 3.5kW FTXM35YVMA | ★ Most popular Premium Panasonic Z 4.2kW CS-Z42AKRW | Premium Daikin Cora 4.6kW FTXV46WVMA | Premium Daikin Alira X 4.6kW FTXM46WVMA | Value Midea Athena 3.6kw specs on Athena page |
|---|---|---|---|---|---|---|---|---|---|
| Supply + installed | from $2,075best | from $2,230 | from $2,285 | from $2,340 | from $2,525 | from $2,595 | from $2,845 | from $3,090 | from $1,770 |
| Cooling | 3.5kW | 3.5kW | 4.2kW | 3.5kW | 3.5kW | 4.2kW | 4.6kW | 4.6kW | — |
| Heating | 3.8kW | 4kW | 5.1kW | 3.7kW | 3.7kW | 5.1kW | 4.7kW | 4.7kW | — |
| Cooling range | — | — | — | 0.9–4.2kW | 1–4.2kW | — | 0.9–5.5kW | 0.9–5.5kW | — |
| EER (cooling efficiency) | 4.33 | 4.33 | 3.53 | 4.32 | 4.38best | 3.53 | 3.83 | 3.95 | — |
| COP (heating efficiency) | 4.38 | 4.38 | 3.56 | 4.81 | 4.89best | 3.56 | 4.23 | 4.52 | — |
| Energy stars (cooling) | 4★* | 4★* | 3.5★* | 5★best | 5★best | 3.5★* | 4★ | 4.5★ | — |
| Quiet mode | Yes | Yes | Yes | 19 dB(A)best | 19 dB(A)best | Yes | 26 dB(A) | 26 dB(A) | — |
| Wi-Fi / app control | Optional adaptor | Built-in | Optional adaptor | Optional adaptor | Built-in | Built-in | Optional adaptor | Built-in | — |
| Air purification | Anti-bacterial filter | nanoe™ X (24/7) | Anti-bacterial filter | Deodorising filter | Streamer (built-in) | nanoe™ X (24/7) | Deodorising filter | Streamer (built-in) | — |
| Airflow | Adjustable louvres | AEROWINGS twin louvre | Adjustable louvres | Coanda + Intelligent Eye | Coanda + Intelligent Eye | AEROWINGS twin louvre | Coanda + Intelligent Eye | Coanda + Intelligent Eye | — |
| Dedicated circuit | Usually not needed | Usually not needed | Required | Usually not needed | Usually not needed | 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 labour | 5-year parts and compressor | 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 $2,020 – $2,900
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 a dedicated circuit for the units in this bracket that are over 3.5kW. The full anatomy — with worked examples — is in our Perth split system cost guide, or try the cost calculator for your setup.
3.5kW split systems — common questions
How much does a 3.5kW split system cost installed in Perth?
$2,020 – $2,900 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 3.5kW split system suit?
20 to 30 m² — standard bedroom, small 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 3.5kW split system need a dedicated circuit?
It depends which unit in this bracket. A 3.5kW unit itself can usually share a suitable existing circuit if it's compliant and has capacity. The larger units in this bracket (above 3.5kW) need their own dedicated circuit from the switchboard. Either way we check your board at the free quote and run any circuit in-house — we're dual-licensed in aircon and electrical.
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Get a fixed 3.5kW 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.