Ashrae Duct Fitting Database Excel Link Better Jun 2026

Build "What-If" scenarios to see how changing a fitting affects total static pressure.

Several HVAC software developers offer commercial Excel add-ins that wrap the ASHRAE DFDB equations into custom Excel functions. Once installed, these add-ins allow you to type formulas directly into a cell, such as: =ASHRAE_FIT_COEFF("SD5-1", Diameter, Velocity)

Enter flow rate and dimensions; get pressure loss instantly. Reliability: Data pulled straight from ASHRAE Handbook—Fundamentals. ashrae duct fitting database excel link

There are several legitimate ways to access the DFDB and its exportable data.

Designers can instantly compare how changing an elbow radius ( Build "What-If" scenarios to see how changing a

After extensive research (and filtering out spam sites promising “cracked� files), here is the truth about the :

dll = ctypes.CDLL("C:/ASHRAE/ASHRAEDFDB.dll") dll.GetFittingData.argtypes = [c_long, c_double, c_double, c_double, ctypes.POINTER(c_double)] The best method to pull the database into

| Software | Excel Integration | |----------|------------------| | | Exports to Excel with loss coefficients | | Trane Ductulator | Manual lookup only (not direct link) | | ASHRAE HVAC Toolkit | Includes Excel examples (requires purchase) | | SixBit Software (DuctLink) | Excel add-in for DFDB ($$) |

The primary tool for current data, accessible via an annual subscription on the ASHRAE Bookstore .

The best method to pull the database into Excel without breaking links: