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Title: works great
Review: It works really well. If you run it all the time so that the air remains pure, it doesn't make any noise...but if you only run it at night, then it does. Also, it does require cleaning (and I'm not talking just pulling the little thing on the side. I'm talking pulling out the filter and washing it down until you can see your reflection in it again). We have dogs and it seems we end up cleaning it a lot more often than the user guide said. We're very happy with it overall!
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