Let’s clear the air with Blueair. Blue Pure 311i Max HEPASilent smart air purifier quickly cleans 387 sq. ft medium room in about 12.5 min, up to 929 sq. ft medium space in 30 min, and 1,800 sq.ft in 1 hour on high. This air purifier has a Clean Air Delivery Rate (CADR) of 250 for fine smoke particles, dust and pollen. Energy Star Most Efficient 2023.
Q: Does this air purifier have an air quality indicator?
A: Yes, this air purifier has an air quality indicator light.
Q: Is this air purifier compatible with a mobile application?
A: Yes, this air purifier is compatible with a mobile application.
Q: Does this air purifier have an indicator for filter replacement?
A: Yes, this air purifier has indicator lights for filter replacement.
Q: Are there multiple fan speeds on this air purifier?
A: Yes, this air purifier has four fan speeds.
Q: Does this air purifier have a timer?
A: Yes, this air purifier has a programmable timer.
Q: Can this air purifier remove smoke particles?
A: Yes, this air purifier removes smoke particles down to 0.1 microns.
Q: Is this air purifier energy star certified?
A: Yes, this air purifier is ENERGY STAR Certified.
Q: what is the difference between the 311i Max and the 311i + Max?
A: The Blue Pure 311i+ Max air purifier cleans up to 1,116sqft large space in 30min on high and has a Clean Air Delivery Rate (CADR) of 300 for fine smoke particles, dust and pollen. The Blue Pure 311i Max air purifier cleans up to 929sqft space in 30min on high. This air purifier has a Clean Air Delivery Rate (CADR) of 250 for fine smoke particles, dust and pollen.
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.
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.

Let’s clear the air with Blueair. Blue Pure 311i Max HEPASilent smart air purifier quickly cleans 387 sq. ft medium room in about 12.5 min, up to 929 sq. ft medium space in 30 min, and 1,800 sq.ft in 1 hour on high. This air purifier has a Clean Air Delivery Rate (CADR) of 250 for fine smoke particles, dust and pollen. Energy Star Most Efficient 2023.

Let’s clear the air with Blueair. Blue Pure 211i Max HEPASilent smart air purifier quickly cleans 635 sq. ft extra-large room in about 12.5 min or up to 1,524 sq. ft XL space in 30 min & 3,000 sq. ft in 1 hour, on high. This air purifier has a Clean Air Delivery Rate (CADR) of 410 for fine smoke particles, dust and pollen.

Blue Pure 511i Max HEPASilent smart air purifier quickly cleans 193 sqft in about 12.5min, 465 sqft in 30 minutes and upto 926 sqft in 1 hour on high. Independently evaluated for safety standards and third-party tested for performance as part of the AHAM Verifide Program for air cleaners, this air purifier has a Clean Air Delivery Rate (CADR) of 125 for fine smoke particles, dust and pollen.

The air quality of your home is important, as are your pets. That’s why the Levoit Vital 200S-P Smart Air Purifier filters at least 99.97% of airborne particles down to 0.3 microns, such as hair and smoke particles. Featuring helpful Pet Mode, the Vital 200S-P can automatically switch between high and low fan speeds to keep your air clean while helping to conserve energy. Is your playful pet shaking loose fur into the air? No problem—the additional U-shaped air inlet captures airborne pet fur while helping to reduce clogging. These features, combined with smart control, scheduling, and real-time air quality updates, make creating a fresh and happy environment for you and your furry friends easy.
| Pros for Blueair - Blue Pure 311i Max 1,800 Sq. Ft Smart HEPASilent Air Purifier - White/Seabed | |||
|---|---|---|---|
| Noise Level, Air Quality, Overall Performance, Design, Ease of use | Air Quality, Noise Level, Overall Performance, Ease of use, Design | Noise Level, Air Quality, Overall Performance, Ease of Use, Filter | Air Quality, Noise Level, Overall Performance, Ease of use, App |
| Cons for Blueair - Blue Pure 311i Max 1,800 Sq. Ft Smart HEPASilent Air Purifier - White/Seabed | |||
| WiFi Connectivity | Price | Odor Removal | Filter Life |