A:AnswerThank you for contacting NewAir. To empty the tank you would need to pull the drain plug from the bottom of the unit to empty the tank. Best Regards, Customer Care
A:AnswerThank you for contacting Newair, the unit can be used in a room without an open door or window. However, the unit may not be providing cool air as it should also the room may take longer to cool. Best Regards, Customer Service