Major duct component manufacturers offer free software to lock you into their products.
: Calculate airflow rates and pressure drops to avoid system inefficiency. free duct design software
Finding reliable can be the difference between a high-performing HVAC system and one plagued by noise, hot spots, and energy waste. While professional BIM (Building Information Modeling) suites can cost thousands, several powerful free tools—ranging from online "ductulators" to feature-rich trial versions—are available for engineers and DIY enthusiasts alike. Top Free Duct Design and Sizing Tools 1. Quick Calculation "Ductulators" Major duct component manufacturers offer free software to
: A beginner-friendly, browser-based CAD tool from Autodesk . While general-purpose, it is an excellent starting point for students and hobbyists to visualize 3D duct layouts. While general-purpose, it is an excellent starting point
: A modern, web-based version of the traditional physical duct wheel. It calculates velocity, pressure drop, and friction factors for both circular and rectangular ducts.