Blue Pure 511i Max

Air Purifier, Small Rooms

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1 Air Purifier
1 Particle & Carbon Filter
1 Pre-Filter in Stockholm Fog

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2 Replacement Filters
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Our smallest smart air purifier

Keep your home a safe haven with the Blue Pure 511i Max, featuring advanced air purification that’s quiet enough for nap time yet powerful enough for allergy season.

Quickly cleans 237 ft² in 12.5 minutes, 569 ft² in 30 minutes, & 1,138 ft² in 1 hour.
Automatically detects and quickly removes pollutants such as viruses, bacteria, dust, and odors.
Compact with 360-degree air intake, so you can place it anywhere-on the floor or table.
RealTrack in-app filter monitoring accurately tracks filter lifetime based on usage and pollutant levels.

Perfect for bedrooms or offices
Place anywhere with 360˚ design
Automatically Adjust Fan Speed
Instant air quality readings
PM 2.5 pollutant tracking
App & Wifi connectivity
RealTrack filter monitoring
Smart home integration

Additional Features

Wi-Fi connectivity for remote control Yes
Speed control options 1 - 2 - 3 - 4 - Auto - Night
Integrated air sensors Yes

Shipping & Warranty

Free & fast shipping
30 day home trial
Free extended warranty

Customize your purifier

Pre-filter add-on

Additional pre-filter colors to seamlessly blend into your space.

$8.99

Speciality filter add-on

Specialty filters designed for additional protection against allergens or smoke.

$44.99

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.

Why choose Blue Pure 511i Max?

Perfect for busy families

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.
Whisper quiet when you need it most

A sound level as low as 19 dB, the Blue Pure 511i Max operates quietly, ensuring it won’t disturb you or your family.
Kid-friendly design

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.
Reliable air quality insights

Monitor indoor & outdoor air quality, set schedules, and have 24/7 control of your air purifier in the trusted Blueair app.

“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

“I like having a one for each high-traffic room such as our master bedroom, office, and living room. Although this one was intended for our office, it is by far the most attractive air purifier I have yet to see, so I swapped it for the one we had in our living room.”

MrsAdams

“The unit will automatically adjust according to the air quality, and there is a light indicator letting you know how it accesses the value. You can also set it manually, with three fan speeds, and wireless capabilities.”

Kmill

Meet our filters

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

Exclusive features in the highly rated Blueair app

3 Modes for Optimal Clean Air

Choose your fan speed, set to auto or night mode and display lock your settings.
Custom Schedules to Fit Your Lifestyle

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.
Accurate filter lifetime tracking

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

Technical Specifications

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 ft²
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 - 4 - Auto - Night

FAQ

What pollutants does the Blue Pure 511i Max filter out?

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.

What room size is best for the Blue Pure 511i Max?

What are the noise levels of the Blue Pure 511i Max?

How often do I need to change the filters?

Your filter will last up to 1 year thanks to our proprietary RealTrack algorithm that accurately calculates the remaining filter lifetime based on fan speed, usage time and pollution levels.

When it's time to replace the filter, the filter replacement LED on the interface will turn red to remind you. Alternatively, connect to the Blueair app to receive an alert and easily re-order at the touch of a button.

What is the warranty for the Blue Pure 511i Max?

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 When similar CADR was measured, Blueair models with mechanical and electrostatic filtration achieved less noise with less energy than same models with only H13 HEPA mechanical filtration.

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.

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