This Sunpentown Magic Clean HEPA Air Cleaner with Ionizer effectively purifies the air in rooms that measure up to 180 square feet. Built with multiple functions such as HEPA filter and activate carbon filter and ionizer, it targets and removes harmful particles, reduces odor and airborne antagonists. This SPT magic clean air purifier has a filter change date indicator on the top of the unit to remind you when it's time to replace its filter. The filter is easy to access, making replacing it quick and easy.