Ok, I thought I could get by without the outside air kit...after all, my house is old and drafty. But after doing the math on the volume of air getting sucked up by that little fan, I realized I need it.
At 140cfm this fan is clearing out a 20x20 room every 23 minutes or sucking the entire cubic feet of air from my house every 85 minutes
20x20x8'ceilings=3200 cubic feet/140 cubic feet per minute=22.85 minutes to empty the room of the heated air
I thought I felt a draft! :bug:
At 140cfm this fan is clearing out a 20x20 room every 23 minutes or sucking the entire cubic feet of air from my house every 85 minutes
20x20x8'ceilings=3200 cubic feet/140 cubic feet per minute=22.85 minutes to empty the room of the heated air
I thought I felt a draft! :bug: