House Ventillation Requirement
- 0.35-1 air exchanges per hour for air quality in a home 
- For one bedroom of the Seed Eco-Home 2, we have nominally 170 sf or 1360 cf.
- 100 CFM gets us 1360 cf in about 14 minutes, or about 4 air exchanges per hour.
- Thus, 100 cfm is more than adequate.