Blueair - Blue Pure 311i Max 2,107 Sq. Ft Smart HEPASilent Air Purifier - White/Seabed
Customers are saying
Customers frequently mention the Blue Pure 311i Max 1,800 Sq. Ft Smart HEPASilent Air Purifier's quiet noise level on its lowest setting and its ability to accurately measure air quality. Many appreciate its overall performance on any setting, sleek design, and ease of use. The washable fabric prefilter, convenient size, user-friendly app, and multiple fan speed options are also well-received features.
Features
Powerful Air Purifier for Medium Rooms
The Blue Pure 311i Max quickly cleans air in bedrooms, living rooms, apartments, and home offices. It cleans 439 sq ft in 12.5 minutes and 2,107 sq ft in 1 hour with powerful airflow.
Removes Dust, Smoke, Pet Dander & Allergens
Blueair’s HEPASilent dual filtration technology captures 99.97% of airborne particles down to 0.1 microns, including dust, pollen, pet dander, mold particles, and smoke.
Smart Air Purifier with App Control
Built-in sensors automatically adjust fan speed when pollution levels rise. Use the Blueair mobile app to monitor air quality, schedule operation, and track filter life.
Quiet Operation for Bedrooms & Nurseries
QuietMark-certified performance runs between 23–50 dB, making it ideal for bedrooms, nurseries, and workspaces.
Modern Design for Everyday Living
The Blue Pure 311i Max features a minimalist Scandinavian design with 360° air intake, allowing it to blend into modern homes while circulating clean air efficiently.
*Based on a survey of over 50 awards, accolades, and recommendations issued by independent consumer associations, media publications and industry competitions from 1/1/22-1/31/23, for products sold in the US by top 10 air purifier brands, NPD Group, Small Appliances, U.S. sales dollars 1/1–12/31/22.
†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. Noise refers to the dB(A) difference in acoustic power.
‡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.
§Tested PM 2.5 (0.1 - 2.5 microns) up to 90min in a 30m3 room. Tested to remove min. 99.9% of S. aureus, K. pneumoniae, P. aeruginosa, MS2, E.Coli, H1N1, A.Niger.
Specifications
- Recommended Room Size388 square feetApp CompatibleYesWireless ConnectivityBluetooth, Wi-FiAir Quality Indicator Light(s)YesFilter TypeHEPA, Electrostatic, Activated carbonClean Air Delivery Rate (CADR)250 cubic feet per minute
Reviews
Rating 4.8 out of 5 stars with 274 reviews
- Noise Level (99)
- Air Quality (87)
- Overall Performance (40)
- Design (23)
- Ease of use (21)
- WiFi Connectivity (3)
Customer Images
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
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The Blueair Blue Pure 311i Max smart air purifier is designed for bedrooms, living rooms, and medium-size homes that need powerful air cleaning. Using advanced HEPASilent™ dual filtration technology, it captures 99.97% of airborne particles such as dust, pollen, pet dander, mold particles, and smoke, helping improve indoor air quality. Capable of cleaning up to 439 square feet in about 12.5 minutes or up to 2,107 square feet in 1 hour, the Blue Pure 311i Max is ideal for bedrooms, apartments, home offices, and households with pets or allergy concerns. The purifier combines mechanical and electrostatic filtration to efficiently remove airborne pollutants while maintaining strong airflow and quiet performance. Blueair’s HEPASilent technology helps deliver high filtration efficiency with lower energy use and less noise compared with traditional HEPA filtration systems. With a Clean Air Delivery Rate (CADR) of 250 for smoke, dust, and pollen, the Blue Pure 311i Max quickly circulates and refreshes indoor air, helping maintain cleaner air throughout your space. Smart sensors monitor indoor air quality and automatically adjust fan speed when pollution levels rise. Through the Blueair mobile app, you can track air quality, control settings remotely, and receive filter replacement reminders for easy maintenance. Designed for everyday living, the Blue Pure 311i Max features quiet operation and a compact Scandinavian-inspired design with 360° air intake, allowing it to blend seamlessly into bedrooms, living rooms, and home offices while efficiently circulating clean air. Whether you’re managing pet dander, seasonal allergies, smoke particles, or everyday dust, the Blueair Blue Pure 311i Max helps create a cleaner, more comfortable indoor environment.

The Blueair Blue Pure 511i Max smart air purifier is designed for bedrooms, small rooms, and apartments that need efficient air cleaning. Using advanced HEPASilent™ filtration technology, it captures 99.97% of airborne particles including dust, pollen, pet dander, and smoke, helping improve indoor air quality. Capable of cleaning up to 1,138 square feet in one hour, the Blue Pure 511i Max is ideal for bedrooms, nurseries, home offices, and homes with pets or allergy concerns. Experience powerful air purification in a compact design with the Blueair Blue Pure 511i Max smart air purifier, engineered for bedrooms and small living spaces. The purifier combines mechanical and electrostatic filtration through Blueair’s proprietary HEPASilent™ technology, capturing airborne pollutants such as dust, pollen, pet dander, smoke particles, and mold spores while maintaining quiet operation. This advanced filtration captures particles down to 0.1 microns, helping keep indoor air cleaner and fresher. Designed for small spaces, the Blue Pure 511i Max refreshes indoor air quickly, cleaning 237 square feet in about 12.5 minutes or up to 1,138 square feet in one hour. This makes it ideal for bedrooms, dorm rooms, apartments, home offices, and nurseries. Smart sensors monitor air quality and automatically adjust fan speed when pollution levels rise. Through the Blueair mobile app, you can check air quality levels, schedule operation, and receive filter replacement reminders. With quiet performance as low as 19 dB and a compact Scandinavian design, the Blue Pure 511i Max blends seamlessly into modern homes while delivering efficient air purification. Whether you're managing pet dander, seasonal allergies, cooking odors, or everyday dust, the Blue Pure 511i Max helps create a cleaner and more comfortable indoor environment.

The Dyson Purifier Big+Quiet Formaldehyde is our biggest purifier yet, engineered from the ground up, to evenly purify large spaces.¹ Cone aerodynamics creates a condensed jet of air to project purified air over 32 feet. Quietly. An advanced 360 HEPA H13 grade filter captures allergens and 99.97% of fine particles⁴. Removes gases and odors.² Destroys formaldehyde, permanently.³ Recommended for rooms upto 73 Sq Ft.

The Shark NeverChange Air Purifier delivers all-day clean air with powerful, long-lasting HEPA filtration. Watch your air quality improve in real time and breathe easier as Shark's PureShield Anti-Allergen* filtration captures dust, pet dander, smoke, irritants, and more. Plus, with up to 5 years of long-lasting filtration,** you can save big on pricey filter replacements.*Allergen refers to non-living matter. ** vs. cost of replacing filters over a 5-year period on top 10 leading competitor units under $150. Source: Based on market share data as of Nov. ‘23 to Oct ‘24.
| Pros for Blueair - Blue Pure 311i Max 2,107 Sq. Ft Smart HEPASilent Air Purifier - White/Seabed | |||
|---|---|---|---|
| Noise Level, Air Quality, Overall Performance, Design, Ease of use | Noise Level, Air Quality, Overall Performance, Design, Ease of Use | Air Quality, Noise Level, Overall Performance, Filter Life, Size | Air Quality, Noise Level, Overall Performance, Filter Life, Ease of use |
| Cons for Blueair - Blue Pure 311i Max 2,107 Sq. Ft Smart HEPASilent Air Purifier - White/Seabed | |||
| WiFi Connectivity | There were no cons for this product— | Price | There were no cons for this product— |


































































