Excel Best | Duct Esp Calculation

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.

Your Excel sheet will show each row clearly, allowing you to adjust duct sizes if ESP is too high or low. duct esp calculation excel

Here's an example of a DUCT ESP calculation in Excel: The critical path is the duct run with

For rectangular duct, enter first, then look up friction. and completely under your control.

Now that you know exactly how to create and use a duct ESP calculator in Excel, open a blank workbook and start building. Your next HVAC fan selection will be faster, more accurate, and completely under your control.