Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Unit failed the day after we received it

We were pleased with this humidifier the first evening that we used it, but the next evening, we found that the fan had broken at some point (unplugging the machine and replugging it didn't help, nor did emptying out the unit and refilling it). While the humidifier still produced mist, the mist just sort of drifted up out of the unit and floated toward the floor, rather than being sent up into the air as it was the previous night. We are sending this humidifier back for a refund.