About
This tool quickly calculates HVAC duct sizes based on airflow and friction loss. It supports various duct shapes and provides key airflow values for field use.
What's New in DuctSizer Pro
1.3
June 3, 2026
Added Catalog Pro with VAV and air device catalog access through a one-time in-app purchase. Improved in-app purchase setup and catalog unlock messaging.
MoreFAQ
What duct shapes does DuctSizer Pro support?
DuctSizer Pro supports square, round, and oval ductwork, providing flexibility for various HVAC system designs.
What key airflow values does DuctSizer Pro display?
The app displays crucial airflow values including velocity, friction loss, area, and the equivalent round size for the selected duct.
Can DuctSizer Pro compare different duct sizes?
Yes, DuctSizer Pro can compare alternate duct sizes for the same airflow, helping users make informed decisions for their projects.
Is DuctSizer Pro available on Android devices?
Currently, DuctSizer Pro is only supported on iPhone devices.
How often is DuctSizer Pro updated?
The app was last updated on June 3, 2026, with version 1.3. This indicates a recent update and ongoing development.
What is the age rating for DuctSizer Pro?
DuctSizer Pro has an age rating of 4+, making it suitable for a wide range of users.
Does DuctSizer Pro have ads?
No, DuctSizer Pro does not contain advertisements.
What is the user feedback on DuctSizer Pro?
DuctSizer Pro has received excellent user feedback, with an average rating of 5.0 stars from 2 ratings.