For quick field calculations, ASHRAE offers a free "Lite" version available on the Apple App Store . It includes a subset of common fittings for on-the-go use.
Searching for a ".rar" version of this database often leads to unofficial file-sharing sites. Be aware of the following: Duct Fitting Database - ASHRAE Download ASHRAE Duct Fitting Database rar
The is a critical tool for HVAC engineers to calculate pressure losses across various duct components. While you may find "rar" files on third-party sites, official access has transitioned away from standalone downloads to cloud-based subscriptions and mobile applications . Official Access Options For quick field calculations, ASHRAE offers a free
A more comprehensive mobile version covers all 240+ fittings listed in the ASHRAE Handbook of Fundamentals and allows for project saving and report emailing. Be aware of the following: Duct Fitting Database
The primary tool is now a web-based platform. Users purchase a one-year subscription to access loss coefficient tables for over 200 round, rectangular, and flat oval fittings. You can manage this through the ASHRAE Bookstore .
Rather than downloading a potentially unsafe compressed file (like a .rar), ASHRAE provides several official, secure methods to access this data:
Older database versions (like 5.0) are sometimes integrated directly into design software like Autodesk Revit to help MEP engineers calculate pressure loss during the design process. Risks of Third-Party ".rar" Downloads