Ashrae Duct Fitting Database Version. 6.00.05 -

Many engineers ask: "If I am still using version 4.02 or 5.00, should I upgrade?"

Last updated: September 2025 – verified against ASHRAE’s official release notes.

This database is typically accessed via third-party HVAC design tools (like Elite Software, Trane Duct Designer, or Wrightsoft). However, the raw database files (DLLs and IDX files) are available for licensed users through the official ASHRAE store or your software vendor’s update portal. ashrae duct fitting database version. 6.00.05

Version 6.00.05 is available for purchase as a one-year cloud-based subscription through the official or authorized resellers like Accuris (formerly Techstreet) . The mobile app for iOS devices is a separate, one-time purchase available from the Apple App Store .

Similar physical reference data can be found in the SMACNA HVAC Systems Duct Design manual, though the ASHRAE digital database allows for faster, more complex computations. Duct Fitting Database - ASHRAE Many engineers ask: "If I am still using version 4

Until then, remains the engineer’s most reliable companion.

In a recent project involving a retrofit with limited plenum height, we had to use several stacked elbows and closely spaced tees. Standard ductulators underestimated the losses. Using the stacked fitting data in v6.00.05, we calculated a pressure drop 25% higher than the standard method, allowing us to correctly size the fan curve and avoid a noise/commissioning failure later. Version 6

: Categorized by function, such as E (Elbows), T (Tees/Crosses), Tr (Transitions), or Entries/Exits .