Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Noisy, but it works

It works great to add humidity to the air and I was attracted to the filterless machine but out of all the humidifiers I have owned, it is definitely the noisiest. I will be returning it because it is difficult to hear over top of it running when it is on the high setting, which we need to keep enough humidity in our house. For the price, I think it will be worth it to spend just a little more and get something quieter.