Blue Pure 311

Medium spaces
Blue Pure 311
Includes a washable pre-filter in Arctic Trail
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Compact yet powerful. One-button operation. 360 degrees of advanced, ultra-quiet filtration. Just plug this powerful performer in, and let the good air flow. Cleaning the air has never been this easy.

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Medium sized spaces, maximum air quality

Filters the air in a 340 ft² space in about 12.5 min¹ (4.8x an hour, based on AHAM recommended removal rate) or up to 1,632ft² in one hour on high speed to effectively lower particle levels and maintain a comfortable environment in medium spaces like primary bedrooms and playrooms.

Blueair Blue 311 Auto CADR vs roomsize graphic
Three layers of ultra-advanced filtration

An outer fabric washable pre-filter starts the process by removing larger particles. This also extends the life of the main filter.

The main particle filter removes everything from pollen, dust and pet dander to viruses and bacteria*.

Then a layer of activated carbon goes to work, ridding households of light odors from pets, cooking and smoking.

Blueair 311 xray view of different parts to show  3 layers of filtration
Blueair Particle in Filtration Stage
Maximum filtration.
Minimum noise.

Up to 45% faster with up to 67% less noise than traditional HEPA filtration alone.³

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Complete control with
a single button

With just one button to press and keep an eye on for filter status, you'll never be fussing with settings or left wondering about air quality.

Blueair Examples of pre-filter colors for 211+ Auto air purifier
Five premium fabric colors to play with

Easily customize your air purifier to sleekly blend into any space with up to five washable pre-filter fabric colors. Scandinavian inspired Arctic Trail is included.

Blueair Graphic showing 360 degree filtration from Blue Pure 311 Auto
Easy to place

A 360-degree air intake means you can place the 311 Auto almost anywhere without compromising performance. Combine this with its compact and lightweight design, and you have an air purifier that is easy to move and place wherever suits you.

Blueair Person asleep in bed with Blue 311 Auto next to the bed running quietly
Sound design you
can sleep on

Get clean air while you work or sleep without disruption. Operates at noise-levels that are a whisper quiet 23 dB on its lowest speed, and no louder than a 53 dB rainfall on its highest setting.

Independently proven performance
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Verifide(R) for performance and Clean Air Delivery Rate (CADR).
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Certified to meet ozone safety standards.
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Rated as energy-efficient air purifiers.
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Zero Ozone Verified (<5 ppb) by Intertek Sustainability Program.
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Low energy consumption

ENERGY STAR rated for best-in-class efficiency. This certified air purifier uses less energy (3W) than the average LED lightbulb (about 10W) so it’s kind to your wallet and the planet. Confidently run it for quality air 24/7.

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Pre-filter for extended filter life

While the colorful fabric of the washable pre-filter looks great, it also extends the life of its primary filter by catching large particles. Its fabric can be vaccummed or put in a washing machine for easy cleaning.

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Intuitive single-button design

With just one button to press and keep an eye on for filter status, you'll never be fussing with settings or wondering about air quality.

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Filter quality warning system

Never worry about your filter's quality with a built-in LED warning system that glows red when you are due for a refresh. For optimal performance, we recommend replacing filters every 6 months.

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Auto-dimming LED light

Interact with your air purifier and it brightens up for easy reading, then after approx.. 7 seconds, the LED light will automatically dim. Leaving you and your environment undisturbed. 

  • Wi-Fi connectivity for remote control
  • On/off timer
  • Filter replacement indicator
  • Speed control options
    1 - 2 - 3
  • Wheels
Inlcuded in the box

Items packaged individually within box - please read manual for set-up instructions.

Blueair Blue Pure 311 Auto air purifier

Blue Pure 311 air purifier

Blueair In the box- Washable 411 auto pre-filter in Arctic Trail

Washable pre-filter in Arctic Trail

Blueair IN the box - Instruction manual 211+ auto

Instruction manual

  • Filter Type
    Particle filter + Carbon sheet. Activated coconut shell carbon. Non-woven gradient Polypropelyne fibers. Free of chemicals and binders. Fiber shedding resistance.
  • Dimensions(HxWxD)
    18.5 x 10.2 x 10.2 in
  • Product weight
  • Energy consumption
    3-36 W
  • Sound level
    23-54 dB(A)
  • Air outlet
  • Air inlet
  • Filter recycling
    Plastic. Check your local recycling requirements for carbon.
  • Recommended filter change
    6 months (4,380 hours) when used 24 hours a day
  • Recommended room size
    340 ft2
  • Air changes per hour (ACH)
  • Clean air delivery rate (CADR) - Pollen
    210 cfm
  • Clean air delivery rate (CADR) - Dust
    210 cfm
  • Clean air delivery rate (CADR) - Smoke
    220 cfm
  • Number of filters

Guarantee clean air for years to come with up to 2-years of warranty coverage when you register your air purifier.

How does this model differ from the Blue Pure 311 Auto?

While they look similar, our Blue Pure 311 is not the same air purifier as the Blue Pure 311 Auto, which features our upgraded auto-mode functionality and increased Clean Air Delivery Rate (CADR) performance. Due to the size difference, each respective model will have its own replacement filter and pre-filter accessories. All other features stay relatively the same. For the Blue Pure 311, simply press the button on top to control settings depending on your air quality conditions and preferences. To upgrade to Blue Pure 311 Auto, shop here.

How does this model differ from the Blue 411?

With many of the same features of the 411 model, the 311 differs in its slightly larger overall size, larger recommended room size (up to 340 ft² in 12.5 min), and higher Clean Air Delivery Rate (CADR). It also features our newer pre-filter colors!

How do I register for warranty?

To extend the Limited Warranty from one year to two (2) years, simply complete the product registration form in the 'Warranty' section of your customer account, within (60) days of purchase or register through the Blueair mobile app.​

How should I clean the fabric pre-filter?

Vacuum the exterior of the fabric pre-filter to remove dust as often as you'd like. When the pre-filter requires a deeper clean, it can be washed on a gentle, low-temperature cycle in the washing machine. Hang to dry.

I've replaced my filters, now how do I reset the filter replacement indicator?​

Press and hold down the LED button for 10 seconds to reset the replacement filter indicator. ​​

Why is my LED yellow?

The LED indicator will turn yellow after 5 months of operation to warn that it's almost time to change the filter. When the indicator light turns red (one month later), it’s time to change the main filter.

What are the settings on this model?

The lights on the LED touch-button indicate the selected fan speed setting. Touch once to set to Night mode (low fan speed, no LEDs lit). This is recommended for uninterrupted sleep at night. Press twice for everyday mode (medium fan speed) and three times for boost mode (high fan speed). Press a fourth time to turn the air purifier off.

Is the Blue Pure 311 compatible with the Blue Pure 311 Auto SmokeBlock filter?

While they look similar, our Blue Pure 311 is not the same air purifier as the Blue Pure 311 Auto, which features our upgraded auto-mode functionality and increased Clean Air Delivery Rate (CADR) performance. Due to the size difference, the Blue Pure 311 Auto SmokeBlock filter is not compatible with the Blue Pure 311 air purifier. 

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¹Based on third-party testing of removal rate of fine particles according to GB/T18801-2015 standard and pollen removal rate according to AHAM AC/1-2019 standard. According to AHAM, air changes per hour (ACH) is the measure of the outside air volume added to a space divided by the volume of that space over a set amount of time. 


²Tested on E.coli, Influenza A (H1N1), A.niger with a minimum reduction rate of 99.9% in 60min 

³Comparing CADR performance of Blueair models vs same models with only H13 HEPA. At similar CADRs, Blueair models achieved less noise than same models with only H13 HEPA. Noise refers to the dB(A) difference in acoustic power. Tested on Blue Pure 211+ Auto, DustMagnet™ 5400i, Protect 7400 series. Performance may vary. 


⁴Based on removal testing of particles 0.4-0.7um in 60min in a 30m³ room. Performance may vary. 

⁵Tested on benzene, toluene, nitrogen oxide, sulfur dioxide. 

*Tested on  E.Coli, Influenza A (H1N1), A.niger with minimum reduction rate of 99.9% in 60min.