This is over kill. Exhausting 1200 cfm will backdraft any open combustion device in the home even if you have fresh air intakes. Also theres the problem with heating/ cooling/humidifying/dehumidifying.
Originally Posted by deemancpa
Critical issues are enough negative pressure to contain the smoke in the area where smoke in taking place. An exhaust rate from the center of the activity that change the air in the room in a hour should be plenty. Extending the exhaust time for a couple hours after the activity should be enough to clear the space. How big is the space? Keep it small. 800 X 9 =7200 FT^3. 120 cfm of exhaust would handle this space. 200 cfm to be safe. During the mild times of the year with outside dew points +60^F, you will need some supplemental dehumidification to avoid mold.
Bear Rules: Keep our home <50% RH summer, controls mites/mold and very comfortable.
Provide 60-100 cfm of fresh air when occupied to purge indoor pollutants and keep window dry during cold weather. T-stat setup/setback +8 hrs. saves energy
Use +Merv 10 air filter. -Don't forget the "Golden Rule"