Blue Pure 511
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Our latest and smallest addition to the Blueair family. Introducing Blue Pure 511, our most compact, lightweight, yet efficient air purifier. Blue Pure 511 combines simplicity and performance for maximum filtration¹ and minimum noise² at the touch of a button.
Our unique HEPASilent™ technology, combines electrostatic and mechanical filtration to capture at least 99.97% of airborne particles down to 0.1 micron in size².
180 ft² (AHAM) in 12.5 minutes or up to 432 ft² in 30 minutes.
Press once for Night mode, twice for Everyday mode, and three times for Boost mode.
Small but mighty, the Blue Pure 511 is perfect for dorms, nurseries, and small home offices.
The Blue Pure 511 operates on low at 24 dB (quieter than a whisper, and 49 dB (normal conversation) on high.
Our three Scandinavian inspired washable pre-filters are designed to seamlessly blend into your home.
Our pre-filters extend the life of primary filters, catching large airborne particles such as dust, lint, pollen, and pet hair.
Dimensions(HxWxD)13.4 X 7.9 X 7.9 in
Energy consumption2-16 W
Sound level24-49 dB
Recommended room size182 - 432 ft2
Air changes per hour (ACH)4.8
Clean air delivery rate (CADR) - Pollen112 cfm
Clean air delivery rate (CADR) - Dust112 cfm
Clean air delivery rate (CADR) - Smoke112 cfm
Number of filters1
Key upgrades include: more coverage, quieter on highest fan, & smaller compact size.
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 three (3) 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.
¹ Comparing pollen CADR on high fan speed (Blue Pure 411a Max & 411i Max vs. Blue 411 Auto), other units may vary. Based on AHAM maximum allowable certified rating which may vary from the AHAM seal claimed valued.
² Test on PM 2.5 in 90mins
³Sound pressure at max fan. Assuming 219 sq.ft room size and 4.8 air exchanges per hour (AHAM AC-1)
⁴Quietest refers to eligibility for Quiet Mark certification, limited to 10-20% of quietest products. See https://www.quietmark.com/ for further information
*Min. reduction 99.9% of E.Coli & S. aureus