Ashrae Duct Fitting Database Version 60005 !!better!! Jun 2026

Version 6 represents a significant evolution of the DFDB. According to official ASHRAE documentation, Version 6 includes an integrated database and makes all input, output, calculations, and table data properties fully available, with calculations that update easily and in real time.

Instead of relying on outdated slide rules or generic "safety factors," engineers use the DFDB to calculate the using the velocity pressure equation:

The tool calculates the C-factor based on the inputs. ashrae duct fitting database version 60005

Getting access to the DFDB is a multi-path process depending on your needs and platform.

Input velocity (v) or airflow rate (Q).

Stay tuned for our follow-up post: “How to Convert DFDB 60005 Data into Excel Pressure Drop Matrices.”

This specific sub-version introduced several technical refinements and new fitting data: Version 6 represents a significant evolution of the DFDB

: A "Lite" version of the app is available on the Apple App Store for quick field calculations on iPhone and iPad.

Features a user-friendly interface with visual outlines, making it easy to identify specific fittings and input dimensions. Getting access to the DFDB is a multi-path

Provides accurate loss coefficients based on empirical data, reducing guesswork in manual calculations.