Every Brisbane homeowner considering ducted air conditioning asks the same question first: what’s it actually going to cost? The problem is that most quotes come in wildly different, and most websites give vague ranges that don’t help you budget properly.
So here’s a straight answer, based on what JM Air & Refrigeration installs in homes across Brisbane and the surrounding suburbs every week.
What Does Ducted Air Conditioning Cost in Brisbane in 2026?
For a fully installed ducted system — supply, installation, ducting, zoning, and all electrical work included — expect these ranges for Brisbane homes:
– Small home (2–3 bedrooms, single storey): $7,500 – $10,500
– Medium home (4 bedrooms, single storey): $10,000 – $14,000
– Large home (4–5 bedrooms, double storey): $15,000 – $22,000+
These figures include the indoor unit, outdoor compressor, all ductwork, ceiling outlets, a return air grille, a zone controller, and installation labour. They do not include optional upgrades like premium smart controllers or additional zones beyond a standard setup.
Brisbane’s subtropical climate means systems need to be adequately sized for both the extreme summer heat and humidity — undersizing to save money upfront almost always costs more in running costs and comfort over time.
What Drives the Cost Up or Down?
*Home size and ceiling height.* This is the single biggest cost driver. More floor area means more ducting, more outlets, and a higher-capacity outdoor unit. Double-storey homes are more expensive than single-storey because the ductwork is more complex.
*Number of zones.* A standard system covers your whole home as one zone. Adding zones — so you can cool bedrooms separately from living areas, or turn off unoccupied rooms — adds cost but dramatically reduces running costs over time. Most Brisbane families opt for 4–6 zones.
*Roof space access.* Most Brisbane homes have reasonable roof cavity access, but older homes, lowset buildings, or homes with steel frames can require additional work. A qualified technician will assess this before quoting.
*Brand and system capacity.* There’s a meaningful price difference between entry-level and premium brands. JM Air and Refrigeration partners with Gree, which delivers excellent performance at a more accessible price point than some premium brands — without compromising on reliability or warranty.
*New build vs retrofit.* Installing ducted air conditioning during construction (before plasterboard goes up) is significantly cheaper than retrofitting into an existing home, because the installer can run ductwork freely before walls and ceilings are finished. If you’re building in North Lakes, Griffin, Mango Hill, or any of the new estates in Brisbane’s north, locking in your air conditioning contractor before the frame stage can save you $2,000–$4,000 compared to retrofitting later.
*Orientation of your home.* In Brisbane, a home’s orientation affects how much sun and heat different rooms cop each day, which changes the ducted system capacity needed to cool the house comfortably. Hotter west- and north-facing zones often require larger airflow, extra return air, or additional zoning and duct runs to balance temperatures—adding labour and materials. If the design has to overcome strong afternoon heat gain (common on western exposures), you may also need upgraded equipment or more complex layouts, which can push the install price up compared to a more naturally efficient orientation.
What Does a Typical 4-Bedroom Brisbane Home Ducted Air Conditioning Cost?
To give you a real-world example: a typical single-storey, 4-bedroom home in suburban Brisbane north — brick veneer, standard roof cavity, 200–250sqm of conditioned space — would generally land between $14,000 and $17,500 for a fully installed ducted system with 5 zones and a quality controller.
What About Running Costs?
A ducted system running on a typical Brisbane summer day (say, cooling a 4-bedroom home from 2pm–10pm) uses approximately 3–7kWh per hour depending on system size and outdoor temperature. At current Southeast Queensland electricity rates, that’s roughly $1.50–$3.50 per hour of running time.
Zoning reduces this significantly — if you’re only cooling the living areas during the day and switching to bedrooms at night, you’re running a fraction of the system’s capacity for much of the time.
Is Ducted Worth It Compared to Split Systems?
Ducted is worth it when you want whole-home comfort, a clean aesthetic with no wall-mounted units in every room, and the flexibility to control different zones independently. It’s the natural choice for new builds and for families who want consistent comfort throughout the house.
Split systems are better for targeted cooling — a single room, a home office, or a bedroom that needs air conditioning while the rest of the house doesn’t.
For most Brisbane families in a 3-bedroom or larger home who want to cool multiple rooms, ducted delivers better long-term value despite the higher upfront cost.
Get a Proper Quote Before You Decide
Pricing from a website can only get you so close. Every home is different — roof cavity access, orientation, insulation quality, and the number of zones you want all affect the final number. The only way to get an accurate price is to have a technician walk through your home and provide a detailed, itemised quote.
JM Air & Refrigeration provides free, no-obligation quotes for ducted air conditioning across Brisbane North, Moreton Bay, Caboolture, Redcliffe, North Lakes, and surrounding areas. We’ll tell you exactly what’s involved, what it’ll cost, and what you can expect — no pressure, no runaround.