What an air purifier's CADR rating means
Most air purifiers are labeled with a clean air delivery CADR rating, a metric devised by the Association of Home Appliance Manufacturers (AHAM) that informs consumers about how successful a device is at filtering various particles in specific room sizes.
The higher the number, the more particles the air purifier can remove and the larger the room the device may properly be anticipated to clean.
Some air purifiers have a single CADR rating, whilst others have separate CADR ratings for smoke and related small particles, dust, pollen, and similarly large particles.
Also, keep in mind that the CADR rating of an air purifier reflects the best-case situation. These figures are derived from controlled testing conditions. Variables in your home, like drafts or humidity, may prohibit your air purifier from performing to its full potential.
