Blue Pure 411
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Compact yet powerful. One button operation. Advanced, ultra-quiet filtration. Easy to place in tight spaces for the best air. Just plug it in and let the clean air flow.
Filters the air in a 161 ft² space in about 12.5 min¹ (4.8x an hour, based on AHAM recommended removal rate) or up to 772 ft² in one hour on high speed to effectively lower particle levels and maintain a comfortable environment in large spaces like nurseries, guest rooms and home offices.
An outer fabric washable pre-filter starts the process by removing larger particles. This also extends the life of the main filter.
The main particle filter removes everything from pollen, dust and pet dander to viruses and bacteria.
Then a layer of activated carbon goes to work, ridding households of light odors from pets, cooking and smoking.
Only Blueair air purifiers use HEPASilent™ technology which provides maximum filtration with minimum noise. This dual filtration technology pioneered by Blueair combines electrostatic charging of particles and mechanical filtration using a unique filter design. Blueair air purifiers, therefore, produce more² clean air faster, cleaning your air quicker and much more quietly³ than traditional HEPA air purifiers.
With just one button to press for speed control and keep an eye on filter status, you'll never be fussing with settings or left wondering about air quality.
Easily customize your air purifier to sleekly blend into any space with up to six washable pre-filter fabric colors. Dark Shadow and Diva Blue are included.
A 360-degree air intake means you can place the 411 almost anywhere without compromising performance. Combine this with its compact and lightweight design, and you have an air purifier that is easy to move and place wherever suits you.
Quiet Mark certified as one of the quietest air purifiers in its category. Operates on low at a whisper silent 17 dB, and a library like hush on high, or 46 dB. Work or sleep by it with ease.
This certified air purifier uses less energy than an average LED lightbulb (about 10 W) at 2W on lowest setting and up to 10W on high. Confidently run it for quality air 24/7.
While the colorful fabric of the washable pre-filter looks great, it also extends the life of its primary filter by catching large particles. Its fabric can be vaccummed or put in a washing machine for easy cleaning.
Never worry about guessing when to replace your filter. A built-in LED filter lifetime indicator glows red when you are due for a replacement. Subscribe to our filter club for auto-replenishment every 6 months for optimal performance.
Wi-Fi connectivity for remote controlno
Filter replacement indicatorYes
Speed control options1 - 2 - 3
Integrated air sensorsNo
Items packaged individually within box - please read manual for set-up instructions.
Dimensions(HxWxD)16.7 x 8 x 8 in
Energy consumption1.5 - 10 W
Sound level17 - 46 dB(A)
Recommended room size161 ft2
Air changes per hour (ACH)4.8
Clean air delivery rate (CADR) - Pollen120 cfm
Clean air delivery rate (CADR) - Dust120 cfm
Clean air delivery rate (CADR) - Smoke105 cfm
Guarantee clean air for years to come with up to 2-years of warranty coverage when you register your air purifier.
The 211+ model has many similar features, but the 121 is recommended for an extra larger room size of up to 620 square feet.
Press and hold down the LED button for 10 seconds to reset the replacement filter indicator.
To extend the Limited Warranty from one year to two (2) years, simply complete the product registration form in the 'Warranty' section of your customer account, within (60) days of purchase or register through the Blueair mobile app.
Vacuum the exterior of the fabric pre-filter to remove dust as often as you'd like. When the pre-filter requires a deeper clean, it can be washed on a gentle, low-temperature cycle in the washing machine. Hang to dry.
The LED indicator will turn yellow after 5 months of operation to warn that it's almost time to change the filter. When the indicator light turns red (one month later), it’s time to change the main filter.
¹Based on third-party testing of removal rate of fine particles according to GB/T18801-2015 standard and pollen removal rate according to AHAM AC/1-2019 standard. According to AHAM, air changes per hour (ACH) is the measure of the outside air volume added to a space divided by the volume of that space over a set amount of time.
²Based on testing of particle CADR (GB/T18801-2015, particle size >0.3µm) in a HEPASilentTM /HEPASilent UltraTM unit at the same fan speed, compared to using H13 true HEPA filtration in the same unit.
³Based on testing of noise levels (dB, according to ISO 3743) in a HEPASilentTM /HEPASilent UltraTM unit with the same particle CADR.