Instruct: Classify Amazon reviews into positive or negative sentiment
Query: When it works it is great

I also got their product and it died after a few months.I did get a replacement which took a while and they needed all the information you can think of before they would send the replacement.But after another couple of months the new one died too. I will not bother wasting my time trying to replace it again.But when it works it is a perfect size and it is very quiet.