Ashrae Duct Fitting Database Excel Link [better] Official

Velocity (FPM)=CFMArea (sq. ft.)Velocity (FPM) equals the fraction with numerator CFM and denominator Area (sq. ft.) end-fraction

: Includes 200+ round, rectangular, and flat oval fittings with pictorial outlines to help with visual identification. Calculations

Official ASHRAE resources for the Duct Fitting Database (DFDB) are provided as standalone software or cloud-based subscriptions rather than a raw Excel file. However, you can use the software to generate data for your Excel sheets or find community-built Excel calculators that reference ASHRAE values. 🔗 Official ASHRAE Links Cloud-Based Database (Annual Subscription): Access the full database of over 200 fittings via the ASHRAE Bookstore Free Mobile App (Lite): Perform basic calculations on the go with the DFDB Lite App for iPhone and iPad. Service Life & Maintenance Database: A free tool for HVAC equipment planning is available on ASHRAE's Free Resources page 📥 Excel-Compatible Alternatives ashrae duct fitting database excel link

Organize these tables in a centralized reference workbook. Within your production calculation sheets, use advanced lookup functions like XLOOKUP or index-matching formulas. The formula references the specific ASHRAE fitting code (e.g., a round smooth radius elbow, CD3-1) alongside geometric variables (such as the ratio of duct radius to diameter, ) to retrieve the exact loss coefficient. 3. Third-Party Add-Ins and Commercial API Integrations

The ASHRAE Duct Fitting Database is a collection of loss coefficients (C-factor, or technically Co for round and Co' for rectangular) for hundreds of HVAC fittings, including: Velocity (FPM)=CFMArea (sq

Some third-party software vendors and HVAC developers create direct API wrappers or COM add-ins for Excel. These plugins allow you to type a custom formula directly into a cell, such as =ASHRAE_Fitting_Loss(FittingID, FlowRate, Dimensions) , which pulls data straight from the database backend. 2. CSV/Text Data Extraction

Some premium duct sizing add-ins (like ASHRAE’s own DFDB Toolkit for .NET) expose an ODBC interface. Calculations Official ASHRAE resources for the Duct Fitting

Do you prefer a or a VBA/macro-based approach ?

Once you have your raw ASHRAE coefficients hosted on a reference tab in Excel, use this structural layout to build an automated calculator. Step 1: Set Up the Input Columns Create a table with the following headers for user inputs: (e.g., EF1-1, SF2-3)