“I love that I can operate it from anywhere with the app. I can get it going before I get home from being outdoors. It is a very quiet machine. It has night mode and will dim or turn off all lights on the machine.”
Lesann
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$237.98
$237.98
Lesann
MrsAdams
Kmill
The "Welcome Home" feature automatically turns the purifier on when you're near and off when you leave, so your family always returns to a clean, safe environment without any extra effort.
A sound level as low as 19 dB, the Blue Pure 511i Max operates quietly, ensuring it won’t disturb you or your family.
Equipped with a compact, rounded shape, and display lock, the Blue Pure 511i Max is designed to fit seamlessly into any room without sharp edges, making it safe for children’s bedrooms or play areas.
Monitor indoor & outdoor air quality, set schedules, and have 24/7 control of your air purifier in the trusted Blueair app.
4 layers of filtration remove
99.97%¹
of airborne pollutants
HEPASilent™ technology combines electrostatic and mechanical filtration to capture tiny airborne pollutants like pollen, dust and smoke, faster* and quieter⁴ than traditional HEPA.
Particle & Carbon
Our original filter. Removes allergens and traps light household odors from pets, cooking and smoke
SmokeBlock
2x more activated carbon than our original filter. Removes up to 99.99%³ of wildfire smoke
AllergenBlock⁵
Extra protection against allergens. Traps and neutralizes dust, pollen and pet dander
Choose your fan speed, set to auto or night mode and display lock your settings.
Tailor your air purifier’s settings to your daily routine with customized schedules. Set your preferred times for enhanced air purification, so you can wake up to fresh air, keep your home clean during peak hours, and save energy when you're away.
RealTrack Technology tracks your filter lifetime based on pollutant levels and alerts you when it’s time to replace your filter.
Free and fast shipping
30 day home trial
Extended warranty
Dimensions(HxWxD)
14.5” x 9.3” x 9.3”
Product Weight
4.2 lb
Energy Consumption
17 W
Sound level
19-48 dB
Air outlet
Top
Recommended room size
237 sq. ft.
Air changes per hour (ACH)
4.8
Clean air delivery rate (CADR)
Pollen 174 cfm
Dust 159 cfm
Smoke 153 cfm
Number of filters
1
Speed control options
1 - 2 - 3 - Auto - Night
Operates quieter than a whisper on low at 19 db and is no louder than 42 dB on high fan speed.
To achieve maximum performance we recommend placing your Blue Pure 511i Max in a room around 237 ft² room so your air purifier can clean the air at the AHAM recommendation of 4 times every 12.5 minutes. The Blue Pure 511i Max will clean a 569 ft² space in 30 minutes, and 1,138 ft² in 1 hour.
Our HEPASilent™ dual filtration technology removes 99.97%¹ of airborne particles down to 0.1 microns, ensuring pollen, cooking odors, smoke, dust, pet dander, mold, chemicals, allergen matter and even tiny particles such as viruses and bacteria², are captured with minimal noise and energy consumption.
¹ Tested on PM 2.5 up to 90 mins
² Based on ELISA deactivation testing of Pollen (Cry J1), Pet Dander (Fel d1, Can F1), Dust Mite Matter (Der f1) on the filter media in 60 minutes.
³ Compared to standard in-unit filter. Based on removal testing of particles 0.4-0.7 μm in 60min in a 30m3 room. Performance may vary.
⁴ Noise refers to acoustic power at max. fan compared to Blue Auto models.
⁵AllergenBlock refers to inanimate allergens pollen, dust and pet dander.
* Comparing CADR performance of Blueair models with mechanical and electrostatic filtration vs same models with only H13 HEPA mechanical filtration.
Note: CADR and room size values have been updated to meet new DOE standards. Website listings reflect the most accurate information. You may notice slight differences versus product packaging during the transition.