Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Loud after a year

It was really nice for a while - it did everything it was supposed to. But after a few months it has become very loud to the point of being useless. Another, smaller problem is that you need to refill it often to ensure it won't run out of water in the middle of the night, because if it does, it will scream like the train in "My Cousin Vinny" movie, instead of just shutting off!