Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: a real noise maker
Review: If you like lots of noise while you're having your air purified then this product is for you. The first one I received had a loud clicking noise but only when it was turned off from the high and medium speeds. I thought this was abnormal so returned it for another one. The second one clicked all of the time on all speeds. It sounded like a stick rubbing bicycle spokes.I then returned the second one along with the spare filter I'd purchased. Could be you will run it when you're not home or in a distant room so you won't hear it. It's unlikely you'll have much sleep if you run it in a bedroom. It has a timer which is a nice feature so you can turn it on then it'll turn off before you return home. I emailed the manufacturer and was told "The following clicking sound is normal, no need to worry". Maybe try another product.
