Negative Positive
Title: Pretty good basic purifier
Review: Mine just broke after a couple years of use, probably from a power surge, but until then it kept the room my dogs are crated in clean. It saves a lot of time to not have to dust as often, and the noise was reasonable for the amount of air it moves. For getting a lot of dust out of the air quickly the tower design is excellent but it is not the best choice for allergies. There is air and dust leakage around the filters that is not present on even slightly more expensive models. I'll be replacing it with a refurbished consumer reports top rated model for about $200 and buying a $7 belkin single outlet surge protector to protect it.
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