Ducted Air Conditioning Installation Cost Brisbane (2026) — From $11,000
Installer’s guide to ducted air conditioning installation cost in Brisbane — real fully-installed prices by home size and zone count, what’s included, add-ons and brand pricing. Weighing your options? Compare our split system installation cost guide or the ducted vs split comparison.
Quick answer: ducted air conditioning costs from $11,000 to install in a 3-bed Brisbane home (12kW, 4 zones), from $13,200 for a 4-bed (16kW, 5 zones), and from $15,800 for a 5-bed+ (20kW, 6–7 zones). Bulkhead drops add $1,500–$3,000. Inverter recommended for 20–30% lower running cost.
Ducted installation cost by home size (Brisbane, fully installed)
| Configuration | Starting from (inc GST) |
|---|---|
| 3-bed home (12kW / 4 zones) | From $11,000 |
| 4-bed home (16kW / 5 zones) | From $13,200 |
| 5-bed home (20kW / 7 zones) | From $15,800 |
| Larger / luxury (20kW+ / 8–10 zones) | From $18,500 |
| Bulkhead drop (shallow cavity) | From +$1,500 |
What’s included
- Indoor unit + outdoor compressor (inverter recommended)
- Ductwork to each zone (flexible duct, insulated)
- Zone motors + dampers
- Return-air grille + filter
- Supply outlets cut into ceiling
- Wall controller
- Refrigerant charge, vacuum, pressure test
- Full commissioning, run-test cool + heat
- 10-year workmanship warranty
- Manufacturer warranty registration (5-yr standard)
Add-ons + condition modifiers
- Bulkhead drop — from $1,500
- Extra zone — $400–$700 each
- Smart WiFi controller — $200–$400
- New electrical circuit — from $480
- Old unit removal — from $250 (see our removal cost guide)
- Premium brand upgrade (e.g. Daikin Alira X) — +$1,500–$3,000
Brand pricing (4-bed install)
- Daikin inverter ducted — from $13,200
- Braemar refrigerated — from $12,700
- Braemar combo (refrigerated + gas) — from $14,500
- Mitsubishi Electric ducted — from $14,500
- Fujitsu ducted — from $12,800
Want the full install walkthrough before you commit? Read everything you need to know about ducted installation in Brisbane.
Common questions
How much does ducted air conditioning cost to install in Brisbane?
3-bed from $11,000. 4-bed from $13,200. 5-bed from $15,800. Most Brisbane 4-bedrooms end up $13,200–$17,000 inc GST, fully installed.
How much does ducted aircon cost for a 3-bedroom house?
A 3-bedroom Brisbane home (12kW, 4 zones) starts from $11,000 fully installed inc GST. Most 3-bed jobs land $11,000–$13,000 depending on ceiling access and zone count.
Is ducted or split system cheaper to install?
Split systems are cheaper upfront — from $1,600 per room. Ducted starts from $11,000 for whole-home cooling. For a 3–4 room home the costs converge; ducted wins on comfort, quietness and resale value. See our ducted vs split comparison.
What size do I need?
3-bed: 12–14kW. 4-bed: 14–18kW. 5+: 18–24kW. Refined with on-site Manual J sizing calc.
Inverter or non-inverter?
Inverter, always. Pays back $1,500–$2,500 upfront premium in 2–3 years on running cost.
How long does install take?
2–3 days for retrofit. 1–2 days for new builds.
When should I book?
By early October for Christmas-ready. After October lead times stretch to 6–10 weeks.
AH Air Conditioning · 63 Britannia Ave, Morningside QLD 4170 · ARCtick licensed · 20+ years across Brisbane.