(800)865-5931 Mon-Fri 7am-7pm, Sat 9am-2pm CT
AMERICA'S HEATING & COOLING STORE™
EST. 2002
Home Air Products™
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(800) 865-5931

Mon-Fri 7am-7pm, Sat 9am-2pm CT

This simple Duct Sizing Calculator is a slide-rule type calculator that will help you determine the appropriate size duct for your forced air heating and coooling system.  Whether designing a new duct system or improving your existing duct system this calculator can help.  Using the airflow requirements of your system and the airflow needs of a given space you can determine what size duct to choose.  The duct sizing Calculator provides results for both round and rectangular ducts.

Included Features

  • Round duct size 
  • Rectangular duct size