: AHAM (Association of Home Appliance Manufacturers) is an ANSI-accredited organization that sets strict standards for appliance performance. Air purifiers with the AHAM VERIFIDE seal have been independently tested for air cleaning performance, safety, and energy efficiency. When you choose an AHAM certified air purifier, you're choosing a product trusted for reliable and effective indoor air quality improvement. & : Certified by the Association of Home Appliance Manufacturers (AHAM), the Core 400S-P has been independently tested for performance, efficiency, and safety. Verified CADR ratings: Smoke: 231 CFM Dust: 240 CFM Pollen: 259 CFM - : The LEVOIT Core 400S-P Air Purifier is designed for powerful whole-room purification. With a smoke CADR of 231 CFM, it can clean air in spaces up to 1,733 sq ft in just one hourperfect for bedrooms, living rooms, and open flo