Pre-filled for NCC zone 7 (Cool, 100 W/m²). Covers Canberra (higher altitude), Armidale, Cooma, Katoomba, Orange. Enter your rooms for an instant cooling load estimate and ducted unit recommendation.
Zone 7 covers cool highland areas where heating dominates over cooling for much of the year. The 100 W/m² cooling factor reflects milder summer peaks. When sizing here, check your ducted unit's heating capacity at low ambient temperatures — some systems lose significant output below 7 °C.
Once you have your total L/s from this calculator, the next step is duct layout design. neuralduct auto-sizes every duct against AS 4254.2 velocity limits, validates the NCC J6 friction rate, and produces a compliant PDF for handover — all in the browser, free to try.