The ASHRAE Duct Fitting Database (DFDB) Version 6.00.05 is a specialized engineering tool designed to calculate pressure losses for various HVAC duct fittings. While the full software is a paid, single-user subscription product, ASHRAE offers a limited "Lite" version for free on mobile platforms. Key Features of Version 6.00.05
available via annual subscription; however, a limited "Lite" version is available for free. Version 6.00.05 Overview ashrae duct fitting database version 60005 free
Leo opened a browser tab and typed: ASHRAE duct fitting database version 6.00.05 free. The ASHRAE Duct Fitting Database (DFDB) Version 6
| Source | Content | Limitation | |--------|---------|-------------| | SMACNA HVAC Systems Duct Design Manual (3rd ed., PDF sometimes available via libraries) | Tabulated loss coefficients for ~50 common fittings | Static values, no Reynolds correction | | ASHRAE Fundamentals – Chapter 34 (available via preview on ASHRAE website) | Equations and sample tables | Not a searchable database | | Crane TP-410 (free excerpts) | Loss coefficients for basic transitions, bends | No duct-specific tees or branches | | EngineeringToolbox.com | Online calculators for a few fitting types | Very limited set | Version 6