Ducted air conditioning cost in Australia, 2026

A typical single storey three bedroom house is $9,000 to $14,000 installed in 2026. Two storey, a tight roof, or a long house can run $14,000 to $20,000. That is supply and install, not a website price for the box alone.

Zoning is worth paying for. Being able to shut the bedrooms off during the day is how ducted stops being a heater for the roof space. Cheap ducted with one big blast and a hallway thermostat is how people say ducted is expensive to run.

Victoria can change this number. If you are replacing gas ducted heating, VEU can take thousands off. Run the postcode check. The discount should appear on the quote, not in a later email.

Ask about the return air. Ask about the drain. Ask about the outdoor unit location. Those three lines are where the nasty extras hide.

Want a number for your house? Check the rebate on your postcode. No name required. Check the rebate on your postcode.

Or do the sums yourself first: what size you need and what it costs to run.