Overall this HEPA filter is fantastic it works great that application also works fantastic for controlling the device it is really quiet and sleep mode and level one the only real complaint is at any higher fan speeds it is a little louder side other than that it does a fantastic job of cleaning the air in my office. And as long as you're not using this in a bedroom on one of the higher speed settings it's not too bad overall very satisfied with it and consider it a good quality air filtration unit with all the bells and whistles
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