Can I use a portable air conditioner in a room without a window?
Yes, you can use in a room without a window, but you will need a way to remove the heat extracted by the air conditioning unit. So in a room without a window, one way is for you to install a vent for the heat to be removed. Some portable air conditioning unit has a vent pipe that you can route to the exterior of your room/house. The water is just a by-product of the process, you will need a way to remove the heat for the air conditioning unit to work. Without that, the heat will remain in the room.
Just like all other air conditioning units, portable air conditioners need to have somewhere to release heat. A window is usually the most convenient way for portable air conditioning to vent, but there are other ways. For example, you can attach the exhaust tube to an air vent. Maybe the best idea would be to install a small vent leading directly outside.
