Air Exchanges Per Hour

• For living space, about 7 air exchanges per hour are required. [phttps://en.wikipedia.org/wiki/Air_changes_per_hour]
• Air Exchange Per Hour Calculator sez 5 air exchanges per hour for a 12x12 room with 100 cfm.
• 0.4 per hour is recommended per person for ventilation - [1]
• Furnace forced air should be 150 cfm per 10k btu [2]