Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Poor circulation / low light

The air circulation is very poor and the light isn't very bright - the two primary functions of the unit. Beyond that there's a air dam that rocks back-and-forth when it's windy outside; which is very frustrating due to the noise it makes when rocking back-ad-forth. I bought this to replace a non-lighted fan and will not use in the remaining bathrooms.