This app provides suggested leakage classes using the method outlined in SMACNA’s HVAC Air Duct Leakage Manual| The method used is compliant with ASHRAE 90|1, IECC, IGCC Version 2, IMC and the UMC| Users can combine multiple sections of ductwork that vary by size and shape to calculate a total allowable leakage| The app also allows the user (engineers, architects, designers, and contractors) to easily estimate the air duct leakage and determine the pass/fail mark for properly specified Duct Air Leakage Tests (DALT)|
