To get the most current version of the data, visit the ASHRAE Bookstore . Ensure you are looking for the to get the best compatibility with modern Windows environments and Excel export capabilities.
The ASHRAE Duct Fitting Database (DFDB) is the industry standard for calculating pressure loss in HVAC systems. While the official software is a standalone application, many engineers prefer the flexibility of Excel for complex project calculations. ashrae duct fitting database excel link
Using an Excel-based approach for duct design offers several advantages over the standalone app: To get the most current version of the
The database allows engineers to input specific dimensions and flow rates to receive an accurate dynamic loss coefficient ( Cocap C sub o While the official software is a standalone application,
The official desktop application (available via the ASHRAE bookstore) includes an "Export to Excel" feature. You can select the specific fittings used in your project and export the calculated coefficients directly into a .csv or .xlsx format to continue your calculations. 2. Third-Party Add-Ins
Build "What-If" scenarios to see how changing a fitting affects total static pressure.
Link fitting losses directly to your equipment schedules.