SMACNA Apps and Tools

Find the latest apps and tools developed by SMACNA

Technical App

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. 


This app works as a Ductulator and Pressure Loss (friction) calculator which has the following functions.

  • Converts Duct Shape or Size to Another
  • Determines Sizes for a Given Friction Rate
  • Determines Sizes for a Given Velocity
  • Determines Sizes for a Given Velocity and a Friction Loss Rate (simultaneous output)
  • Determines the Airflow Rate for a Given Size and Friction Loss Rate
  • Calculates Friction Loss

Technical App

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HVAC Duct Construction App

This app allows you to create table driven solutions using the methods and formulas covered in SMACNA’s HVAC Duct Construction Standard (Metal and Flexible). The app will provide SMACNA compliant options for rectangular duct with dimensions up to 120-inches for applications to ten-inch water gage (positive or negative).