My humidity in the room is getting up to 80% now that the AC doesn't kick on so much. The exhaust works on convection, so with no air pushing into the room, the air stagnates. Temperature is staying under 76, which is nice. I tried opening the window, which definitely helps, but the room is extremely air-tight, so the air doesn't move around so much. The solution I came up with is an in-line fan for the exhaust duct.
It's controlled by a remote control outlet plug. I can turn the fan off and on via my phone, set a schedule for it, etc.
The program is pretty nice. I have played with these outlets for maybe a year, and I really like them.
I tried running the fan with the door and window shut, but it struggled to pull air into the room through the HVAC system. Like I said, I made that room extremely air-tight to help with temperature control. However, if I crack the window, it has no problem flushing out the room. It will work great in the winter months to keep the room cool.