Ashrae Duct Fitting Database Version. 6.00.05 May 2026

Advanced Calculation EngineThe software doesn't just provide a static number. It calculates the loss coefficient based on the Reynolds number and relative roughness of the duct material. This ensures that whether you are working with galvanized steel, plastic, or flexible duct, the results are tailored to your specific materials.

Unlike manual calculations using static charts, this software allows for dynamic inputs. By entering specific dimensions, flow rates, and fluid properties, the database provides the exact loss coefficient (C-factor) needed to determine the total static pressure requirements for a fan. Key Features and Capabilities

Over-sizing a fan leads to wasted energy and noisy systems, while under-sizing leads to poor indoor air quality and thermal discomfort. Version 6.00.05 allows for "right-sizing" by: ashrae duct fitting database version. 6.00.05

Reducing Safety Factors: With more accurate data, engineers can move away from "rule of thumb" percentages and use calculated values.

Integration and ExportEngineers can export data for use in external spreadsheets or design reports. This makes it easier to document the "worst-case" path in a duct run, which is essential for sizing fans correctly and meeting building codes. Why Version 6.00.05 Matters for Energy Efficiency Version 6

Optimizing Layouts: Designers can compare different fitting types (e.g., a long-radius elbow vs. a mitered elbow with vanes) to see the immediate impact on system pressure. Installation and System Requirements

User-Friendly InterfaceThe interface allows for quick navigation through the fitting categories. Users can input specific variables like velocity, air density, and fitting dimensions (such as turning radius or angle) to see real-time updates to the loss results. Unlike manual calculations using static charts

ASHRAE Duct Fitting Database Version 6.00.05: The Ultimate Guide to Precision HVAC Design