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Blue Signature™ Large Nordic Fog
Blue Signature™ Large Nordic Fog
Blue Signature™ Large Nordic Fog
Blue Signature™ Large Nordic Fog
Blue Signature™ Large Nordic Fog
Blue Signature™ Large Nordic Fog
Blue Signature™ Large Nordic Fog
Blue Signature™ Large Nordic Fog
Blue Signature™ Large Nordic Fog
Blue Signature™ Large Nordic Fog
Blue Signature™ Large Nordic Fog
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Blue Signature™ Large Nordic Fog
Blue Signature™ Large Nordic Fog
Blue Signature™ Large Nordic Fog
Blue Signature™ Large Nordic Fog
Blue Signature™ Large Nordic Fog
Blue Signature™ Large Nordic Fog
Blue Signature™ Large Nordic Fog
Blue Signature™ Large Nordic Fog
Blue Signature™ Large Nordic Fog
Blue Signature™ Large Nordic Fog
Blue Signature™ Large Nordic Fog
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Blue Signature™ Large

Air Purifier, Extra-large Rooms

4.6
Rated 4.6 out of 5 stars
4.6 Stars (231 Reviews)
Size: Large
One Time Shipment
  • 1 Air Purifier
  • 1 Particle & Carbon Filter
  • 1 Pre-Filter
Filter Subscription
  • 1 Replacement Filter
  • Save 15% on every filter
  • Pay when we send it
Customize Your Subscription
Select Filter
Choose Frequency
  • Most Popular

  • Rapidly cleans 705 ft² in 12.5 minutes & up to 3,385 ft² in 1 hour
  • 7 stages of filtration removes 99.97%² of airborne particles
  • 10x³ more odor removal with OdorFence Technology
  • Dynamic display that auto-adapts to enhance your air
  • Double the filter lifetime thanks to our patent-pending filter design
  • Smart features in the highly rated, newly improved Blueair app
  • Device comes with 1 pre-filter in Nordic Fog and 1 Particle & Carbon filter
  • Customize with exclusive accessories
  • Motion activated touchscreen display
  • RealTrack Technology®
  • Doubles as a table-top

Why choose Blue Signature™?

7 stages of filtration,
10x more odor removal


HEPASilent filtration technology captures at least 99.97%² of tiny airborne pollutants down to 0.1 microns while OdorFence Technology captures common odor gases and breaks them down. It’s deep, effortless clean air you can feel, and smell, every day.

"The Blueair Blue Signature finally gives design-conscious homeowners an air purifier they won't want to hide."

YANKO DESIGN

“I tested it with kitchen odors while cooking, and within about 20 minutes of running the air purifier, I could smell little to nothing. I find that astonishing. I've used other air purifiers before, but this one does the trick.”

Jake

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Smart control in the highly rated & newly upgraded Blueair app

Feel the difference with Blue Signature™

95%

felt it contributed to a
healthier living environment⁵

89%

prefer it over any
other air purifier⁵

Feel the difference with Blue Signature™

Proud to be a Certified B Corp

As a B Corp, we’re part of a global community of businesses that meet high standards of social and environmental impact.

  • Free and fast shipping

  • 30 day home trial

  • Extended warranty

FAQ

Register your product to extend the 1-year warranty to a 3-year warranty.

4.6
Rated 4.6 out of 5 stars
Based on 231 reviews
Total 5 star reviews: 191 Total 4 star reviews: 16 Total 3 star reviews: 14 Total 2 star reviews: 3 Total 1 star reviews: 7
90%would recommend these products
231 reviews
  • PM
    Patrcik M.
    Verified Buyer
    5 days ago
    Reviewing
    Blue Signature™ Large Nordic Fog
    Rated 5 out of 5 stars
    Review

    Very quiet and very effective. The analysis of air quality on the app is excellent.

  • SS
    Susan S.
    Verified Buyer
    5 days ago
    Reviewing
    Blue Signature™ Medium Midnight
    Rated 5 out of 5 stars
    Works well

    I bought this for an open space area in an apartment. I’ve enjoyed having it, especially when cooking with strong odors or the room gets smoky. It was a little tricky connecting to my WiFi, but glad I did. I set it on auto most days. Now when I start to cook certain things, I turn the fan to 4 for extra circulation before getting started. Overall, it’s quiet and helpful.

  • LD
    Leslie D.
    Verified Buyer
    1 week ago
    Reviewing
    Blue Signature™ Large Nordic Fog
    Rated 5 out of 5 stars
    Love my Blueair collection

    So quiet & so effective, plus it looks nice :)

    Ps. I have 5 models, one for every room ❤️

  • KS
    Kevin S.
    Verified Buyer
    1 week ago
    Reviewing
    Blue Signature™ Large Midnight
    Rated 5 out of 5 stars
    Excellent Air Filter but Needs Some Engineering Tweaks

    First the Good:

    On day one, within a few hours, the air was incredibly better. I purchased this to be in our main living area which is connected with the kitchen. I am hopeful that it will greatly reduce the cooking odors quickly. For a quick test, I made some popcorn and periodically watched the air quality on the app. I was impressed how it picked up the popcorn odors and cleared them out quickly. (It was a minor blip on the monitor, but it was there!)

    I like the design, but I do wish it came with legs. $79 for a cheap plastic ring with four wooden dowels as legs is ridiculous. I'm looking at a $12 wooden plant stand that I'll attach using two 3M adhesive velcro strips. The goal is to get it off the floor as to keep the dog hair from dirtying the pre-filter quickly.

    Second, the Design Complaints:

    I was very disappointed when un-boxing to see that there is a permanently attached power cord with a wall-wart (power supply) attached at the end. REALLY? That power supply should be inside this device, and there should be a detachable power cord. For a multi-million dollar company, (BlueAir-Unilever), and for a $400+ device, this minor design change should be included.

    The second issue I have is the fact that this device cannot be registered for a warranty through the app. I went to register for the warranty, and the first thing it wants is the serial number. So, I went to the app to get the serial number from the device settings. Do you think it was there? No,…

    B Profile picture for Blueair
    Blueair
    3 days ago

    Thank you for sharing your detailed feedback on your new Blueair unit. We’re delighted to hear that you noticed an immediate improvement in air quality and that it quickly reduced cooking odors. It’s great to know the design and performance are meeting your needs.

    We appreciate your comments about the stand, power cord, and warranty registration process. Your input is valuable and will be shared with our product team as we continue to enhance our designs and customer experience.

    We’re glad you’re satisfied overall and enjoying cleaner, fresher air in your home. Thank you again for choosing Blueair and for taking the time to share your review.

  • EM
    Emily M.
    Verified Buyer
    1 week ago
    Reviewing
    Blue Signature™ Large Nordic Fog
    Rated 5 out of 5 stars
    Love it!

    Exactly what I wanted. Works wonderfully and looks snazzy.

¹ Based on high-speed CADR by volume vs. similar competitive models

² Tested on PM2.5 up to 90 minutes.

³ Tested on Acetaldehyde gas vs. similar leading competitor filter

⁴ Tested on bacteria (S. aureus, K. pneumoniae, P. aeruginosa), virus (MS2) and mold allergen (A.niger) with a minimum reduction rate of 99.9% in 60min. Blueair does not claim to prevent transmission of airborne illnesses. Not tested on SARS-COV-2.

⁵ Based on consumer testing of 38 users over the course of 4 weeks

⁶ Compared to Blue Pure 211+