Air System & Duct Modeling in Revit

Why It Matters

This tutorial shows practical Revit MEP workflows that speed accurate HVAC modeling and automated duct sizing, reducing manual calculation and coordination errors in building mechanical design. Practitioners gain repeatable techniques and deliverables that improve design efficiency and constructibility.

Summary

The excerpt from BIM Pure’s Mechanical Modeling for Revit course, taught by Tyler Disney of Revx, demonstrates step-by-step air system and duct modeling on a real multi-family/commercial project. Disney places and configures a horizontal heat pump and ceiling diffusers, sets airflow values, draws main and branch duct runs (including flex connections), and shows practical tips like capping open ends and rotating fittings. He then uses Revit’s duct sizing tools to size ducts by friction criteria, splits mains to optimize sizing, and corrects transitions using trim tools. The segment closes by directing viewers to bimpure.com/mep for the full course, templates, and MEP families.

Original Description

Get the MEP courses: https://bimpure.com/mep

Learn how to model ducts and complete air systems in Revit.

0:00 - Intro

0:30 - Systems

0:45 - Heat Pump

1:52 - Air Terminals

3:05 - Tags

3:30 - Model Ducts

4:51 - Cap Open End

5:18 - Branch Duct

5:49 - Flex Duct

6:52 - Size the Duct Work

8:21 - Size Main Branch

9:04 - MEP Courses

Instructor: Tyler Disney