Ashrae Duct Fitting Database Excel Jun 2026

values depending on its dimensions and flow conditions, you cannot use a simple VLOOKUP . Instead, deploy advanced Excel formula combinations:

Use Data Validation or Conditional Formatting to flash a warning if a designer inputs an aspect ratio or velocity ratio that falls completely outside the valid range of that specific ASHRAE fitting table. ashrae duct fitting database excel

ASHRAE offers a free VRP Excel Spreadsheet for ventilation rate calculations, though this is distinct from the full fitting database. Available Versions values depending on its dimensions and flow conditions,