The ASHRAE Duct Fitting Database is a comprehensive software package that provides loss coefficient data for more than 200 types of duct fittings. This data is derived from rigorous laboratory testing and is used to determine the static pressure loss across elbows, tees, transitions, and fan inlets. Key Features of Version 6.00.05

Reputable ductwork and terminal unit manufacturers (such as Price Industries, Ruskin, or Titus) publish free engineering guides and online calculators. These tools often utilize ASHRAE methodology to verify pressure drops across specific damper configurations and mixing boxes. Step-by-Step: Using the Database in a Professional Workflow

Includes comprehensive data for round, rectangular, and flat oval ducts.

Unlike static PDF tables, the 6.00.05 version allows you to adjust multiple variables:

Enables rapid filtering by fitting type (elbows, transitions, junctions, obstructions). Key Features of Version 6.00.05

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If you're creating content for a blog, tutorial, or course, here's a sample outline:

Active ASHRAE members receive significant discounts on the official digital portal.

If you are looking for free resources to estimate duct losses, you can also look into:

The interface allows for instant updates to pressure loss data as you input flow rates and dimensions.