Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Doesn't make the room more humid

Yes, this humidifier is small, quiet, and low maintenance, but it also doesn't do its stated job. We filled it with water, added the included solution, per the instructions, put it in our sons room and let it run all night with the door closed. His room is probably 150 square feet, so not very big. We have a humidity gauge in his room. When we turned the humidifier on that night, it said 24%. The next day, it said 24%. For almost $200, I'd expect this thing to be functional. It's going back asap.