Several companies have developed ready‑to‑use Excel tools based on the ASHRAE database:
Use Excel’s data validation to restrict inputs to reasonable ranges. Add IFERROR wrappers around lookup formulas to handle cases where no match is found. Implement conditional formatting to flag values outside normal operating ranges.
C (Common), S (Supply), R (Return), E (Exhaust). ashrae duct fitting database excel
Some ASHRAE fittings do not use static tables; instead, they rely on complex polynomial equations to calculate Cocap C sub o
: Features pictorial outlines of each fitting, making it easier to select the correct component from the 200+ available options. Working with Excel Spreadsheets C (Common), S (Supply), R (Return), E (Exhaust)
Helper columns calculating variables like Loss Coefficient ( Cocap C sub o
Have you built a custom ASHRAE duct fitting calculator in Excel? Share your tips in the comments below or contact us for a template download. Share your tips in the comments below or
The data supports the methodologies found in the ASHRAE Handbook—Fundamentals and the ASHRAE Duct Fitting Design manual.
Many HVAC engineers ask: why go through the trouble of bringing ASHRAE fitting data into Excel when dedicated software exists? The answer lies in flexibility, transparency, and workflow integration.
You need to create a library. The best way to structure this in Excel is to have columns for:
While the primary tool is a standalone desktop/cloud-based application, it is frequently used in tandem with Excel: Data Export