The Ductulator Duct Sizing app is a powerful tool designed for engineers in the HVAC industry. Developed by Wassim Murr, this app offers a more efficient and flexible alternative to traditional duct sizing charts provided by HVAC manufacturers.

With this app, users can quickly obtain a range of suitable duct sizes by inputting either the maximum friction rate or maximum velocity. It supports both rectangular and circular ducts, and users can easily switch between calculation methods by tapping on the values for velocity or friction.

One of the standout features of the Ductulator Duct Sizing app is its detailed sizing mode. In this mode, engineers can adjust the duct dimensions and air flow rates while checking the resulting friction rate and velocity, which update automatically. This mode is particularly useful for analyzing existing duct systems.

The app also offers the convenience of switching between I-P and S-I units, allowing users to work with their preferred unit system.

Overall, the Ductulator Duct Sizing app provides a fast and versatile solution for duct sizing needs in the HVAC industry. It simplifies the process and eliminates the need for manual calculations or referring to traditional charts. Any feedback provided by users will be taken into consideration for future updates, ensuring the app remains up-to-date and valuable to engineers.