Pre-filled for NCC zone 3 (Hot Dry, 145 W/m²). Covers Alice Springs, Kalgoorlie, Broken Hill, Port Hedland. Enter your rooms for an instant cooling load estimate and ducted unit recommendation.
Zone 3 shares the same 145 W/m² load factor as zone 2, but the load character is different — extreme dry heat rather than humidity. Radiant cooling (night purge) can reduce mechanical load in well-sealed buildings, but ducted systems must handle full peak load during the hottest afternoons, often exceeding 45 °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.