Easy Duct

Easy Duct is an air duct sizing calculator built by an HVAC engineer for real design work. Enter what you know and get a buildable duct size in seconds, on site or at your desk. Easy Duct solves for whatever is missing: airflow, head loss, velocity or duct size. Set a maximum head loss and a maximum velocity together, and the duct is sized to whichever limit is reached first. The governing limit is always named, so you know exactly why you got that size. SIZE THE WAY YOU DESIGN - Head loss and velocity limits checked at the same time - Rectangular and round duct, with aspect ratio shown for every size - Buildable size steps (½, 1 or 2 in) so results match what gets fabricated - EN 1506 standard sizes for metric round duct - Pick any duct size and see its spare capacity live SAFETY FACTOR AND ADD TO FLOW - Apply a flow safety factor that is built into the design flow - Adding a branch or…