time2roll wrote:
You can't operate a dryer in a closed room with a closed door. The dryer functions by moving hot moist air out the vent and outdoors. The room can create a vacuum and reduce airflow. Usually it is a 4" round exhaust vent so 25 square inches of window opening to allow air into the room. Not meant to be complex.
This is correct, if the room is tightly sealed. Very few rooms are that tightly sealed from the rest of a home.
However, I know people who run tons of laundry through a dryer in a closet installation with the door closed, and no special ventilation. Mine is in a 5x10' room with usually a door cracked to the rest of the house, and has been fine for 25 years, for sometimes 20 loads a week. Seems as long as you have something as much as a decent crack below a door that keeps the laundry room from being sealed, you're good.
I think this is kind of the usual CYA language that takes up half of owner's manuals any more.