Not usually. Unless your room is unusually big, a small or mini dehumidifier will do the job. They are easier to manage, more energy efficient and still take care of everyday humidity.

Near a wall, window or area that feels damp is usually a good spot. Just leave a bit of space around it so the air can flow properly.

Yes, most are designed to be left running while you sleep. Look for models with auto shut-off when the tank is full and quiet operation so they don’t disturb your rest.

It depends on how humid your room is, but in many cases, you only need to empty it every couple of days. Most units have a visible water level or indicator light, so you will know when it's time.

Yes, just make sure the model you choose is quiet and has an automatic shut-off. Many parents use them in nurseries to help keep the air feeling fresh and dry.