10 Flex Duct Cfm

Use the online duct calculator see references and calculate the needed flex duct size.

10 flex duct cfm.

You must have 400 cfm of air flow per ton of a c 1 ton equals 12 000 btu approximately 1 cfm of air is required to heat or cool 1 to 1 25 sq. As systems increase in efficiency the tolerances of how we have always done it will no longer be adequate. Click calculate and you will see the size of flex duct you need for that room. 10 joist 525 cfm return only process no.

Duct system sizes and airflow quick chart created date. For instance a 2 5 ton system approximately 400 cfm per ton would require 2 14 flexible return ducts or 1 very short flexible 18 duct to move the 1000 cfm required by the 2 5 ton system. The flex duct size may be different than the hard duct that runs to that room. Based on duct diameter.

Read friction loss inches of water and duct velocity fpm. 20 90º elbow 45º angle no. 8 joist 375 cfm. 1600 24 x 10 20 x 12 17 1600 1700 26 x 10 22 x 12 17 1700 1800 28 x 10 22 x 12 18 1800 1900 30 x 10 22 x 12 18 1900 2000 24 x 10 18 2000 helpful basic information.

Flex duct 05 on most metal duct calculator round metal pipe 06 on most metal duct calculators field duct sizing chart. Input the required cfm in the box below that. 65 residential design process load calcuation heating cooling air distribution air flow equipment selection components and assemblies duct size. Flex duct 05 on most metal duct calculator round metal pipe 06 on most metal duct calculators field duct sizing chart.

Enter round duct diameter. Cfm 4 cfm 6 cfm 8 cfm 10 cfm 12 60 6x4 60 4x6 90 4x8 120 4x10 150 4x12 90 8x4 110 6x6 160 6x8 215 6x10 270 6x12 120 10x4 160 8x6 230 8x8 310 8x10 400 8x12. Enter round duct diameter inches duct airflow cfm duct length and the number of bends. Enter the desired length of the rectangular duct.

Ac infinity flexible 10 inch aluminum ducting heavy duty four layer protection 25 feet long for heating cooling ventilation and exhaust. Cfm 4 cfm 6 cfm 8 cfm 10 cfm 12 60 6x4 60 4x6 90 4x8 120 4x10 150 4x12 90 8x4 110 6x6 160 6x8 215 6x10 270 6x12 120 10x4 160 8x6 230 8x8 310 8x10 400 8x12.