Duct Sizer 4+

Classic Design Tool

Pheinex, LLC

Designed for iPad

    • 4.9 • 15 Ratings
    • $3.99



Designed for HVAC engineers, designers and contractors, the Duct Sizer App has been designed to work in a manner similar to the traditional duct sizing wheels (such as the Trane Ductulator) that have been around for many years and that many engineers are accustomed to. Designed to allow quick determination of the duct size(s) that will meet the design goal, to make the HVAC designer’s work easier.

Slide the various scales up and down to determine the desired duct size.

Size based on desired pressure drop per length, velocity or both. Works for both round and rectangular ducts.

IP and SI units.

This application (App) is provided for use by qualified HVAC engineers and designers in the design of air handling systems and is not a substitute for appropriate design services. When in doubt, contact a design

What’s New

Version 1.2

- Fonts on sliders now adapt based on screen size.
- Bug fixes and improvements.

Ratings and Reviews

4.9 out of 5
15 Ratings

15 Ratings

App Privacy

The developer, Pheinex, LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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