I've said this before - but this is just a reminder. I'll be breaking BOTL over time in order to get it into a far better place. Just be patient if you can't reach us! We'll be back
Have a vent for air intake, and another vent for the outtake. The outtake vent has a large tube that runs through my garage to the outside of the house. There's an in-line fan near the house's outer wall, and a variable control in the room.