Zone Loads
Design Conditions
VAV Box CFM Requirements
Cooling Max CFM
—
CFM
Minimum CFM
—
CFM
Heating CFM
—
CFM
Min CFM Control
—
CFM
Box Size Selection (Neck Velocity 900–1200 FPM)
Recommended Box Size
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| Size | Neck Area (ft²) | CFM at 750 FPM | CFM at 900 FPM | CFM at 1000 FPM | CFM at 1200 FPM | Status |
|---|
Recommended range 900–1200 FPM neck velocity for standard VAV boxes. Reheat coil heating capacity at the controlling minimum CFM should be verified separately. Formula: CFM = Load / (1.08 × ΔT).