HVAC Duct Size Calculator 4+

Alan Cave

Designed for iPad

    • 5.0 • 1 Rating
    • $0.99



This duct sizing app was created for HVAC design professionals who might normally use a "ductulator" to select an duct sizes.

The app goes beyond simply calculating velocity, friction, or volume; It also offers a list of every even sized duct that meet the design criteria for the user to review and consideration at various aspect ratios.

The app features a highly intuitive interface which allows the user to easily adjust values with precision (without the use of cumbersome "slider" controls), or alternatively to enter the values directly with a keypad interface.

Feel free to email comments and suggestions to ductapp@elecpe.com

What’s New

Version 1.3

This app has been updated by Apple to display the Apple Watch app icon.

updated for 64 bit compatibility

Ratings and Reviews

5.0 out of 5
1 Rating

1 Rating

Chadwick 78 ,

Me. Chadwick 78

Very accurate and helpful to use in the field, also saves time compared to the wheel.

Ritchiec711 ,

Excellent App for quick sizing

Excellent for quick sizing and decision making, well worth the purchase. Only one constructive suggestion the ability to limit the list of rectangular sizes by aspect ratio 1:1, 3:1 , etc

TheBigHomie23 ,

Awesome app!!

Must have for out of the office. Great job. Really helpful.

App Privacy

The developer, Alan Cave, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

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

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