Performance is key when choosing the right air filter for your home. AHAM’s searchable Directory of Certified Room Air Cleaners contains certified portable room air cleaner models verified through AHAM’s Room Air Cleaner Certification Program. Each model’s performance has been independently verified through testing at a third-party laboratory.

The information found in the searchable Directory is updated on a continuous basis. You can search the models by:

  • Certified CADR ratings
  • Suggested room size
  • Manufacturer
  • Brand name


Important information on selecting an air cleaner:

The AHAM seal (usually found on the back or the side of an air cleaner’s box) will list three clean air delivery rate (CADR) numbers – one for tobacco smoke, one for pollen and one for dust. The CADR indicates volume of filtered air delivered by an air cleaner. The higher the tobacco smoke, pollen and dust numbers, the faster the unit filters the air.


Follow AHAM’s 2/3 Rule:

You’ll always want a unit with a tobacco smoke CADR at least 2/3 your room’s area. For example, a 10′ x 12′ room -120 square feet – would require an air cleaner with a tobacco smoke CADR of at least 80. If your room size is smaller, the unit will simply clean the air more often or faster. If you have ceilings higher than 8′, you’ll want an air cleaner rated for a larger room.