✅ Recommended for engineers who don’t code: Buy – provides =ASHRAECo(FittingID, Dim1, Dim2, Dim3) directly.
ASHRAE Duct Fitting Database (DFDB) is primarily distributed as a standalone software or cloud-based tool rather than a single direct Excel link. However, you can export your data and results to from these official platforms for further analysis. Official Access Options ashrae duct fitting database excel link
The ASHRAE Duct Fitting Database Excel file offers the following features: ✅ Recommended for engineers who don’t code: Buy
The primary tool for current data, accessible via an annual subscription on the ASHRAE Bookstore . Official Access Options The ASHRAE Duct Fitting Database
💡 Always verify the "Loss Coefficient" units. Some databases use different reference velocities (main stream vs. branch stream), which can lead to significant errors if not linked correctly in your Excel formulas. If you’d like to build a custom tool, let me know:
(available for iOS) allows users to generate and email reports that include a spreadsheet attachment
The is the industry-standard reference for designing and analyzing ductwork systems. It provides the loss coefficients ($C$-values) required to calculate pressure losses for various duct fittings (elbows, transitions, take-offs, etc.).