Blue Pure 311i+ Max

Air Purifier, Large Rooms

$120.00 USD~~$299.99 USD~~

Clean air for a healthier, happier space

Blue Pure 311i+ Max is designed with sensitive groups in mind. Equipped with advanced HEPASilent Dual filtration technology that removes airborne allergens, dust, and asthma triggers.

Quickly cleans 525 ft² in 12.5 minutes, 1,260 ft² in 30 minutes, & 2,520 ft² in 1 hour.
Automatically detects and quickly removes pollutants such as dander, pollen, dust mite matter allergen.
Compact with 360-degree air intake, so you can place it anywhere
RealTrack Technology® accurately tracks filter lifetime based on usage and pollutant levels.
Variety of washable pre-filter colors designed to blend seamlessly in your home

Perfect for kitchens or living rooms
Place anywhere with 360˚ design
Automatically Adjust Fan Speed
Instant air quality readings
PM 2.5 pollutant tracking
App & Wifi connectivity
RealTrack Technology®
Smart home integration

Additional Features

Wi-Fi connectivity for remote control Yes
On/ off timer trueapp
Speed control options 1 - 2 - 3 - Auto - Night
Integrated air sensors Yes

Shipping & Warranty

Free & fast shipping
30 day home trial
Free extended warranty

Why choose Blue Pure 311i+ Max?

Wellness in every breath

Removes 99.97%¹ of tiny airborne particles to quickly transform your bedrooms, playrooms, or basements into a personal wellness retreat where you can thrive.
Whisper-Quiet Sleep Mode

With ultra-quiet performance, you’ll enjoy restful nights and wake up refreshed, creating the perfect balance for your healthy lifestyle.
One-Touch Control

Simple and intuitive, the one-touch control makes it easy to adjust settings without any hassle.
Stylish Scandinavian Design

Modern, minimalist design that blends seamlessly into any bedroom or office while delivering clean, fresh air.

“I recommend Blueair air purifiers to my patients because of their strong performance and their commitment to third party testing, which gives me peace of mind that the airborne particles that commonly exacerbate allergy and asthma symptoms are being captured*”

Dr. Priya Bansal

“Blueair's 311i+ Max was the best at capturing the full range of contaminants floating through the air in a typical home. Its advanced multi-level filtration captures contaminants of all sizes — not just dander and pet hair, but also cooking fumes, dust mites and pollen.”

Best Overall Air Purifier

1 / 2

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.

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 Blueair app

Smarter air, customized to you

Choose your fan speed, set to auto or night mode and display lock your settings.
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.
Welcome Home Technology

Enjoy the convenience of the of your air purifier activating you are a few miles away from home.
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

FAQ

What pollutants does the Blue Pure 311i+ 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 311i+ Max?

To achieve maximum performance we recommend placing your Blue Pure 311i+ Max in a room around 525 ft²room so your air purifier can clean the air at the AHAM recommendation of 4 times every 12.5 minutes. The Blue Pure 311i+ Max will clean a 1,260 ft²space in 30 minutes, and 2,520 ft² in 1 hour

What are the noise levels of the Blue Pure 311i+ Max?

Operates quieter than a whisper on low at 25 db and is no louder than 50 dB on high fan speed.

How often do I need to change the filters?

Your filter will last up to 9 months 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 311i+ Max?

Technical Specifications

Dimensions(HxWxD)

21 x 12.5 x 12.5
Product Weight

7.9 lb
Energy Consumption

38 W
Sound level

23-50 dB
Air outlet

Top
Recommended room size

525 ft²
Air changes per hour (ACH)

4.8
Clean air delivery rate (CADR)

Pollen 446 cfm
Dust 370 cfm
Smoke 339 cfm
Number of filters

1
Speed control options

1 - 2 - 3 - Auto - Night

Product reviews from Blueair

Reviews collected on the original Blueair website.

4.6

Rated 4.6 out of 5 stars

Based on 2,198 reviews

Rated out of 5 stars

1.8k

Rated out of 5 stars

159

Rated out of 5 stars

134

88%would recommend these products

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2,198 reviews

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CG
Caren G.
Verified Buyer
16 hours ago
Reviewing
Blue Pure 311i Max
Rated 5 out of 5 stars
Great new Purchase
This brand was recommended by a good friend. We are so happy we followed their advice. This is a great unit and easy to use.
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JG
Jack G. L.
Verified Buyer
Yesterday
Reviewing
Blue Pure 211i Max
Rated 5 out of 5 stars
Clean Air
In what has become an annual event of fighting wildfire smoke, it is nice to have clean bedroom air. Quiet, wireless, adjustable, even able to control the display. A winner.
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PR
Peter R.
Verified Buyer
Yesterday
Reviewing
Blue Pure 311i+ Max
Rated 5 out of 5 stars
Best Quality Air Purifier
I have allergies and it’s smoky here - these machines keep the air in our house clean and fresh. Very happy with the quality!
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MA
Maria A.
Verified Buyer
Yesterday
Reviewing
Blue Pure 511i Max
Rated 5 out of 5 stars
Blue Pure 511i Max
This product is great! I can really notice the difference
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CE
Carole E.
Verified Buyer
2 days ago
Reviewing
Blue Pure 311i Max
Rated 5 out of 5 stars
Blueair
Works just fine
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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.

⁵ AllergenBlock 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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