HVAC airflow reference table
Formulas
CFM = volume × ACH ÷ 60
ACH = CFM × 60 ÷ volume
m³/h = CFM × 1.69901082
ACH = CFM × 60 ÷ volume
m³/h = CFM × 1.69901082
Lookup
| Room volume | 6 ACH CFM |
|---|---|
| 960 ft³ | 96 |
| 2,400 ft³ | 240 |
FAQ
Does this select a fan?
No. Confirm system losses, controls, code, and performance data.