Title: Works great but only on medium and high power
Product review: This purifier definitely does what it's supposed to do. The filter is designed for big rooms, and it's more than needed for my studio apartment, which is about 450sq ft. However, I find that leaving it on low power doesn't have much of an effect. There's still dust that settles on surfaces around the filter. I usually leave it on medium or high during the day and switch to low at night.
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