Everything You Need to Know About Multi-Head Split Installation in Brisbane
Complete Brisbane homeowner’s guide to multi-head split system installation — how it works, prices by number of heads, brand picks, install process, when it beats separate splits or ducted.
Quick answer: Multi-head from $4,200 fully installed for 2-head, $5,800 for 3-head, $7,200 for 4-head. Best when outdoor space is limited (apartments, narrow side passages, body corp restrictions) or you want one tidy outdoor unit instead of three.
How multi-head works
One outdoor compressor unit feeds refrigerant to multiple indoor heads through separate pipe runs. Each indoor head is independently controlled (on/off, fan speed, mode) but they share the outdoor compressor. The outdoor unit modulates compressor speed to match total demand — one head running = lower compressor speed; all heads running = full speed.
Brisbane multi-head pricing (2026)
| Configuration | Fully installed (from, inc GST) |
|---|---|
| 2-head (2×2.5kW) | From $4,200 |
| 3-head (3×2.5kW) | From $5,800 |
| 3-head mixed (2.5+3.5+5kW) | From $6,400 |
| 4-head | From $7,200 |
| 5-head | From $9,500 |
See full multi-head pricing guide.
When multi-head wins
- Apartments / townhouses — limited outdoor space
- Narrow side passage homes — one outdoor fits, three wouldn’t
- Body corp restrictions — some buildings limit external unit count
- Aesthetic priority — cleaner exterior with one unit
- Cluster of rooms on one wall — tidier pipework
When separate splits beat multi-head
- Brisbane house with outdoor space — $800–$1,500 cheaper than multi-head
- Rooms used independently in different modes — most multi-heads can’t run cool + heat simultaneously
- Failure isolation matters — outdoor failure on multi-head takes all heads offline
- Future expansion planned — easier to add another single split than upgrade a multi-head
- Faster parts — single-split parts are commodity (24hr), multi-head parts specialised (3–7 days)
Full comparison: multi-head vs single splits guide.
Best brands for Brisbane multi-head
- Daikin MX — most flexible indoor-capacity mixing, best parts (24hr). From $5,800 (3-head).
- Mitsubishi Electric MXZ — quietest indoor heads. From $6,000.
- Fujitsu AOTG — best value. From $5,500.
- LG MU — ThinQ WiFi standard. From $5,800.
- Panasonic CU — nanoe X air purification option. From $6,000.
See best multi-head brands guide.
Install process
- Free on-site assessment — room measurement, outdoor location check, electrical capacity
- Written quote in 24 hours — itemised with each indoor head, capacity, pipe runs
- Booking (2-week typical lead time outside peak summer)
- Day 1: outdoor unit installed, refrigerant pipework run to each indoor location
- Day 1 (later) or Day 2: indoor heads mounted, electrical hookup, condensate drains
- Commissioning — refrigerant system vacuumed, pressure-tested, charged, run-tested on every head
- Walk-through — controller operation per head
- Warranty registered — manufacturer 5-yr + AH Aircon 10-yr workmanship
Total time: 1 day for 2-head, 1.5 days for 3-head, 2 days for 4-head.
Common questions
How much does multi-head split install cost in Brisbane?
From $4,200 fully installed for 2-head. From $5,800 for 3-head. From $7,200 for 4-head. From $9,500 for 5-head.
When is multi-head the right choice?
Limited outdoor space (apartments, narrow side passages), body corp restrictions, aesthetic priority, cluster of rooms on one wall. For typical Brisbane houses with outdoor space, separate splits are usually cheaper and more flexible.
Can different rooms run different modes?
Most consumer multi-heads can only run all heads in the same mode (cool or heat) at one time. Premium heat-recovery systems allow mixed modes but cost significantly more.
How long does multi-head install take?
1 day for 2-head, 1.5 days for 3-head, 2 days for 4-head.
What’s the best multi-head brand for Brisbane?
Daikin MX for most Brisbane homes — best indoor-capacity mixing flexibility, 24-hour parts. Mitsubishi MXZ for quietness. Fujitsu AOTG for value.
If one head fails do the others stop?
If just the indoor head fails — no, others still work. If the outdoor compressor fails — all heads stop. Multi-head vulnerability vs separate splits.
Is finance available?
Yes — Brighte and Humm offer 0% interest 12–24 months on approval.
AH Air Conditioning · 63 Britannia Ave, Morningside QLD 4170 · ARCtick licensed · 20+ years across Brisbane.