The Honeywell True HEPA Allergen Remover Compact Tower is great for small rooms. It features a True HEPA filter that effectively captures up to 99.97% of microscopic allergens from the air that passes through its filters1. Air first enters the pre-filter where odors and larger particles are trapped, then the HEPA filter captures dust, pollen, pet dander, smoke and other particles 0.3 microns and larger1. Its stylish compact design looks great in every room and the HPA060 is ENERGY STAR® qualified.