An air purifier is a valuable tool in improving indoor air quality. It helps remove pollutants, such as dust, pet dander, pollen, and mold spores, from the air. When choosing an air purifier, look for one with a high-efficiency particulate air (HEPA) filter, as it can effectively capture tiny particles. Place the air purifier in the rooms where you spend the most time, such as the bedroom or living room, to maximize its benefits.