Warehouse & Shed Ventilation Calculator 🏭

Find out how much air needs to move through your building, and how many fans it takes.

1. Building size
2. How it's used
How we work this out

Airflow needed = building volume × air changes per hour for how it's used, with a boost for hotter climates. Fan numbers are rounded up. You also need fresh-air inlets (louvres, eaves vents or open roller doors) on the opposite side to the fans so air can flow through. Big or complex sites? Call us on 1300 789 333 for a free layout.