Air Duct Leakage App

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. This app 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).

SMACNA's Air Duct Leakage App