Contains (2) combination H13 High-Grade HEPA filter/Active Carbon Filter Captures up to 99.9% of airborne particles 0.1 Micron or larger including bacteria and various contaminants as well as unwanted cooking odors, smoke, VOCs and more Minimum Rating of 2500 Hours Of Run Time Filters last up to 6 months while using 12 hours a day or last 3 months while running 24 hours a day Cuisinart Purxium filters purify up to 250 sq. ft. twice every hour for always-fresh, odor-free air