Clean air delivery rate (CADR)
- 347 cubic feet per minute for dust
- 353 cubic feet per minute for smoke
- 380 cubic feet per minute for pollen
Only Blueair air purifiers use HEPASilent™ technology, delivering maximum filtration with minimum noise. This dual HEPA filtration technology pioneered by Blueair combines electrostatic charging of particles and mechanical filtration along with a unique filter designed to produce more clean air, cleaning your air much faster and more quietly than traditional HEPA filtration alone.
An outer fabric washable pre-filter removes larger particles and extends the life of the main filter. The main HEPA particle filter removes pollen, dust, and pet dander. The layer of activated carbon removes light odors from pets, cooking and smoking.
This model features three speeds plus Auto mode. Noise-levels are a whisper quiet 23 dB on its lowest speed, and no louder than a 56 dB rainfall on its highest setting. The Auto Mode setting helps maintain the room environment by automatically increasing the fan speed when diminishing air quality is detected by the particle sensor (such as with cooking, vacuuming, etc.) and by automatically returning to a lower speed once the pollution dissipates. A three-color LED display indicates air quality as good, moderate, or poor based on the number of fine particle pollutants (PM 2.5) in your indoor air.
The Blueair 211+ Auto filters the air in a 550 square foot space in about 12.5 min (4.8x air changes per hour, the Association of Home Appliance Manufacturers recommended removal rate) or up to 2,640 square feet in one hour on high speed, to effectively lower particle levels and maintain a comfortable environment in large spaces such as living rooms, bedrooms and playrooms. The 360-degree air intake, with air exiting at the top, allows placement in almost any room location.
Energy Star rated, it uses less energy than an LED lightbulb. The unit has an indicator to signal when the filter should be replaced (approximately every 6 months).
Recommended room size 550 square feet (21' x 26'), for 4.8 Air changes per hour
20.5"H x 13"W x 13"D; 12.5lbs
Two-year limited warranty