Hvac Duct Calculator Chart
Include fittings in the duct tel enter either.
Hvac duct calculator chart. Read duct diameter inches and duct velocity fpm. Read round duct diameter inches and friction loss per 100 of duct inches of water. Friction rate velocity friction rate.
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. If ashrae 2013 is selected flexible roughness is 0 003 ft when straight and fully stretched tight at 0 compression adjusted at other compressions otherwise the. Read friction loss inches of water and duct velocity fpm.
Duct system sizes and airflow quick chart created date. Metal ductboard flex size by. Based on duct diameter.
Enter round duct diameter. Enter round duct diameter inches duct airflow cfm duct length and the number of bends. In wg duct tel.
Sheet metal duct friction loss calculator. Rectangular duct is rounded up to the nearest 1 4 inch. Enter the desired length of the rectangular duct.