Ashrae Duct Fitting Database Version. 6.00.05 !!top!! Jun 2026

Each fitting in the database is identified by a (e.g., CD3-22, SR4-3). This systematic coding makes it easy to cross-reference with ASHRAE handbooks and ensures precise communication between engineers. The database also features pictorial outlines of each fitting, which is an invaluable feature for quickly identifying the correct geometry for a given design.

The ASHRAE Duct Fitting Database is an essential tool for HVAC engineers and designers. Some of the benefits of using the database include:

: For technical specifics regarding version 6.00.05, such as installation troubleshooting or viewing "Loss Coefficients (pdf)" from the help menu, refer to the official FAQ page . Database Features (v6.00.05) ashrae duct fitting database version. 6.00.05

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If an initial duct layout yields an excessively high pressure drop, an engineer can use version 6.00.05 to perform a sensitivity analysis. By swapping a standard pleated elbow for an elbow with turning vanes, or by widening a transition angle, the designer can instantly see the reduction in pressure drop and optimize the system for energy efficiency. Troubleshooting Existing Systems Each fitting in the database is identified by a (e

ΔP=Co×Vpcap delta cap P equals cap C sub o cross cap V sub p = Total pressure loss through the fitting. Cocap C sub o

This version is not a cosmetic overhaul but a precision update. The most significant changes include: The ASHRAE Duct Fitting Database is an essential

ASHRAE's response was swift: an (released June 2019) clarifying that the penalties were optional for preliminary design but mandatory for LEED energy models. That nuance became a debate topic at the 2020 ASHRAE Winter Conference in Orlando — a sign that the database had become a living document, not a dusty reference.

The ASHRAE Duct Fitting Database is a specialized software application developed by the American Society of Heating, Refrigerating and Air-Conditioning Engineers. It provides loss coefficient data for more than 200 distinct types of HVAC duct fittings.

The represents decades of research distilled into a practical engineering tool. It bridges the gap between theoretical fluid dynamics and real-world air distribution design. Whether you’re a consulting engineer, contractor, or BIM specialist, mastering this database will elevate the precision of your pressure drop calculations, reduce energy waste, and ensure quieter, more efficient HVAC systems.

: Includes detailed tables and pictorial outlines for more than 200 to 240+ round, rectangular, and flat oval fittings.