Round Hvac Duct Sizing Chart

Download free duct sizing chart pdf according to ashrae standard.

Round hvac duct sizing chart.

These duct chart are based on equal friction method with a friction loss value 0 1 inch 100ft. Flex duct 05 on most metal duct calculator round metal pipe 06 on most metal duct calculators field duct sizing chart rectangular sheet metal duct 07 on most metal duct calculators duct size duct height net inside dimension in inches round duct size estimate. Flex duct has a higher pressure drop and as such may require the size shown on this guide be increased by 1 round size for up to 800 cfm and 2 round sizes. This equal friction method of duct sizing should be adequate for normal residential furnace heating and air conditioning applications.

In wg duct tel. Duct system sizes and airflow quick chart created date. Include fittings in the duct tel enter either. Convert diameter to rectangular equivalent.

Residential duct sizing guide the following duct sizes are based on a fraction drop of 10 inches per 100 feet of lineal duct. The chart is based on metal duct. Larger volumes or higher static pressures should be dealt with on an individual. To insure proper distribution of air volume dampers must be used for all branch runs.

Convert rectangular duct to round equivalent.