I have a washer/dryer utility room on the first floor with it's own supply vent for heat and AC. There is an exhaust fan in the ceiling however the damper inside the exhaust fan has been removed. Perhaps this was done so that make-up air can enter for the dryer? I do notice very hot air "falling" from the exhaust fan into the room on hot days since there is no damper.
What is the correct way for this room to be set up?