Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not a long-lasting product

I agree with many reviewers that this heater is good-looking, quiet, and heats a room quickly. But after 4 months of use, the display will sometimes go "haywire", the machine will sometimes make a horrible, loud noise that will not stop until the machine has been turned off for many hours, and sometimes I have to press the "ON" button many times in order to work. Although I have used this heater almost every night, I am very gentle with the machine and don't even use the oscillating feature. I do not recommend this product. Although it hasn't completely broken yet, I am planning on ordering a new one.