ASHRAE once offered a separate product called the ASHRAE Duct Fitting Database (DFDB) as a standalone Windows program or Excel add-in. As of recent years, this has evolved.
Where to find the official Excel download link: ashrae duct fitting database excel link
This is the only safe, official "excel link" that exists. Save the download link from your ASHRAE account for future updates. ASHRAE once offered a separate product called the
A: Absolutely. The ASHRAE coefficients are derived from real tests (ASHRAE RP-1293, etc.) and are widely accepted for energy modeling. Where to find the official Excel download link:
A: Yes, recent versions (post-2017) include flat oval fittings. Older Excel files may not.