ventilation Calculator Scenario

Duct Sizing for 1000 CFM Airflow

1000 CFM is typical for a 2-3 ton residential system branch duct or a medium commercial supply trunk.

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Key Considerations

  • 1Round duct: 12-14 inch diameter typical
  • 2Rectangular: 10x12 or 8x16 inch options
  • 3Supply velocity: 600-900 FPM recommended
  • 4Return velocity: 400-600 FPM recommended

Applicable Standards

ASHRAE FundamentalsSMACNA

Scenario Parameters

airflow
1700
sizing Method
velocity
target Velocity
4.5
duct Shape
circular
material
galvanizedSteel
application Type
office

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