Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Good filtration but fan whined
Review: The first one I bought had two problems: the clock did not work and the fan had an annoying whine. I swapped it for another. The second one also whined, and, at higher speeds, the whine became intolerable. I gave up and returned it as well.On the plus side, it seemed to do a good job filtering the air.
