A:AnswerNo you don't put water into it. This machine takes water out of the air so your room/rooms are not so damp. The bucket fills up with the water from the air and you must dump out water daily unless you have a hose hooked up to it so the water drains out automatically.
A:AnswerIf you have this version - it is in the back. If you have an earlier version, it is inside -- pull bucket out and there is a slim filter in the front of the unit (above bucket area).