Ductulator

Free

Size round, rectangular, and flat-oval ducts in seconds.

Overview

A fast duct sizing calculator built into Revit. Enter airflow and a friction rate or velocity target and get equivalent sizes for round, rectangular, and flat-oval ducts, with velocity and pressure-drop feedback as you adjust dimensions.

Key features

• Round, rectangular, and flat-oval duct shapes
• Size by friction rate or velocity
• Instant velocity and pressure-drop results
• Reference resources tab for quick lookups

How to use it

1. 1

   Click Ductulator on the RIME ribbon (HVAC panel).

2. 2

   Enter the airflow (CFM).

3. 3

   Choose the duct shape and sizing criterion.

4. 4

   Read the recommended size; lock a dimension to solve for the other.