I was so excited to open the box and try the cooler. The instructions leave a lot to be desired. First, there is a plastic rim on the water tank. The instructions make no mention of it. Should it stay or be tossed? Second, the instructions do not mention that, when you pull out the water tank to fill it, there are three tubes and the pump. If you totally remove the tank to fill it at the sink, you cannot re-install it because of the tubes -- the angle of the tank would result in dumping out a good portion of the water. So, you are forced to fill the tank with pitchers, and, thus, cannot see the fill indicator when you are filling the tank. I guess when I replaced the tank to fill it with water from a pitcher, one of the tubes was not in the right place. So, the first time I ran the cooler, it seemed to be cooling, but water was running out all over the floor. I immediately turned the unit off, removed the tank and unplugged the cooler. I went to the website to look for videos to explain the leak. I ended up in the chat, but, since it was a Saturday, I didn't get a response until Monday. The response let me know that, most likely, one of the tubes was not inside the water tank. That must have been the problem, since, it's working fine now. It does cool, but you need to be pretty close to feel it. Since it's water driven, the room gets more humid when the cooler is running. When I'm sitting right next to it, it's great. Once I get four feet away, I don't feel too much air moving. On the plus side, I do like the convenience of moving it from room to room. And, the company is very responsive to inquiries during the work week.