Pre-filled for NCC zone 8 (Sub-Alpine, 95 W/m²). Covers Perisher, Thredbo, Falls Creek, Mt Hotham, Mt Buller. Enter your rooms for an instant cooling load estimate and ducted unit recommendation.
Zone 8 is Australia's coldest zone — snow country. Cooling loads are minimal (95 W/m²) but heating demands are extreme. Ducted heat pumps must maintain output at very low ambient temperatures; check COP at -7 °C or below. Gas ducted heating is still common in this zone.
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.