Ashrae Duct Fitting Database Excel Link Fixed May 2026

Link fitting losses directly to your equipment schedules.

Using an Excel-based approach for duct design offers several advantages over the standalone app: ashrae duct fitting database excel link

💡 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: Link fitting losses directly to your equipment schedules

Common fittings like elbows, tees, transitions, and fan plenums. branch stream), which can lead to significant errors

The DFDB contains loss coefficient data for over 200 types of duct fittings. It covers: Supply, return, and exhaust systems. Round, rectangular, and flat oval geometries.

Clearly show the math and coefficients used for peer reviews or code compliance. Key Variables Needed for Excel Calculations

For those without the software, the ASHRAE Handbook—Fundamentals provides tables for common fittings. Many firms build their own internal Excel libraries by manually inputting these tables. Benefits of Linking ASHRAE Data to Excel