Duct Esp Calculation Excel < 2026 Edition >

Enter the duct data, including duct ID, length, width, height, and friction factor. You can use the following friction factor values as a reference:

The critical path is the duct run with the highest resistance, typically the longest run with the most fittings and accessories. You must calculate the total pressure drop from the fan discharge (or intake) to the furthest terminal device on this path. duct esp calculation excel

Write a simple VBA macro that iterates duct diameter until friction loss ≤ 0.08 in/100ft for a given CFM. This turns your sheet into a . Enter the duct data, including duct ID, length,