Instruct: Classify Amazon reviews into positive or negative sentiment
Query: How do you make a fan this bad?

All it needed to do was blow air and not sound like an airplane engine.This is by far the loudest non-industrial fan I've ever heard. It sounds like some parts inside are misaligned. I'd return it under warranty, except that my friend has the exact same fan with the exact same problem, so it doesn't seem to be an isolated issue.Go buy a cheap fan from a hardware store. I can basically guarantee it will be better than this thing.