during warm weather it will be exhausted right to the great outdoors but fall/winter it will go to other side of basement (basement is basically split in half by a wall and doorway and room being built in 1 half) and assist with winter heating costs :thumbsup: I also see that a 6" vortex type fan ( can fan type) moves right around 400 cfm's so that is now on the list along with 2 600w lamps to start.