Most digital duct sizers utilize the following core relationships to determine size based on required CFM (Cubic Feet per Minute): is airflow rate and is velocity). Circular Duct Area: Rectangular Duct Area: Ductsize - HVAC Duct Sizing and Analysis - Elite Software
: Result in poor air velocity, temperature control issues, and unnecessary material costs.
: A comprehensive tool that allows designers to create complete duct systems from scratch. It supports three different sizing methods and provides full control over system analysis. Download Duct Sizer zip
: A classic, lightweight industry standard. Though often distributed as a simple executable, it is frequently found in .zip archives on engineering forums or provided directly by Daikin Applied .
While modern engineers often use mobile apps like Duct Sizer Lite or Duct Sizer , several established desktop programs are available for deeper analysis: Most digital duct sizers utilize the following core
: Offers a Ductulator Chart & Guide for those who prefer visual charts or manual calculation formulas over software. Why Accurate Sizing Matters
: Lead to excessive noise (whistling/rushing), high pressure drops, and increased energy consumption. It supports three different sizing methods and provides
: Round ducts are generally the most efficient shape as they have the least surface area for friction. Key Formulas Used in Duct Sizers