2016 | Ashrae Duct Fitting Database
Over 200 distinct fitting geometries, including round, rectangular, and flat-oval ducts, with new entries for radiused elbows, conical reducers, and modern turning vanes.
For decades, engineers have relied on the to calculate these losses accurately. The 2016 version remains a critical milestone in the software’s evolution, bridging the gap between static handbook tables and dynamic, digital calculation. ashrae duct fitting database 2016
| Edition | Key Features | Limitations | | :--- | :--- | :--- | | | ~200 fittings, basic PDF diagrams | No interactive calculator, no Reynolds correction | | 2005 | Added 50 round/rectangular fittings | Poor flat oval data | | 2013 | First web-enabled version | Clunky interface, no mobile support | | 2016 | 350+ fittings, Re correction, API-ready | No native cloud storage | | 2021 | Cloud-based, BIM integration | Requires subscription; 2016 still widely pirated/used | | Edition | Key Features | Limitations |
The American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) has been a leading authority in the HVAC industry for over a century. One of the organization's most valuable resources for engineers and designers is the ASHRAE Duct Fitting Database, which provides a comprehensive collection of duct fitting data for use in HVAC system design. The 2016 edition of the database is the most recent version, offering a wide range of duct fitting data and calculation tools to aid in the design of efficient and effective HVAC systems. that a fan must overcome to move conditioned
that a fan must overcome to move conditioned air through a building. Duct Fitting Database - ASHRAE
Fan selection is heavily dependent on total static pressure. If an engineer underestimates the pressure loss from fittings, the selected fan will operate at a higher speed than intended to meet airflow requirements. This pushes the fan to the right on its performance curve, often resulting in higher noise levels and increased energy use. The DFDB helps ensure the initial fan selection is accurate, mitigating acoustical issues downstream.