Ventilation Rate Calculator
ASHRAE 62.1/62.2 ventilation requirements
Ventilation Requirements
Required Outdoor Air
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Per Person
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People Component (Rp)
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Area Component (Ra)
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Default Occupancy
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Note: These are minimum requirements. Actual design may exceed for IAQ, comfort, or local codes.
ASHRAE 62.1 Space Types Reference
| Space Type | Rp (CFM/person) | Ra (CFM/sq ft) | Default Density |
|---|---|---|---|
| Office Space | 5 | 0.06 | 5 per 1000 sf |
| Conference Room | 5 | 0.06 | 50 per 1000 sf |
| Classroom | 10 | 0.12 | 35 per 1000 sf |
| Retail | 7.5 | 0.12 | 15 per 1000 sf |
| Restaurant | 7.5 | 0.18 | 70 per 1000 sf |
| Gym | 20 | 0.06 | 10 per 1000 sf |