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Blue Signature™ Large Midnight
Blue Signature™ Large Midnight
Blue Signature™ Large Midnight
Blue Signature™ Large Midnight
Blue Signature™ Large Midnight
Blue Signature™ Large Midnight
Blue Signature™ Large Midnight
Blue Signature™ Large Midnight
Blue Signature™ Large Midnight
Blue Signature™ Large Midnight
Blue Signature™ Large Midnight
Blue Signature™ Large Midnight
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Blue Signature™ Large Midnight
Blue Signature™ Large Midnight
Blue Signature™ Large Midnight
Blue Signature™ Large Midnight
Blue Signature™ Large Midnight
Blue Signature™ Large Midnight
Blue Signature™ Large Midnight
Blue Signature™ Large Midnight
Blue Signature™ Large Midnight
Blue Signature™ Large Midnight
Blue Signature™ Large Midnight
Blue Signature™ Large Midnight
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Blue Signature™ Large

Air Purifier, Extra-large Rooms

4.6
Rated 4.6 out of 5 stars
4.6 Stars (244 Reviews)
Save 25%
Size: Large
One Time Shipment
  • 1 Air Purifier
  • 1 Particle & Carbon Filter
  • 1 Pre-Filter
  • 1 Replacement Filter
  • Save 15% on every filter
  • Pay when we send it
Select Filter Type
  • 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 Midnight 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 244 reviews
Total 5 star reviews: 198 Total 4 star reviews: 17 Total 3 star reviews: 15 Total 2 star reviews: 4 Total 1 star reviews: 10
88%would recommend these products
244 reviews
  • IJ
    Ingrid J. W. M.
    Verified Buyer
    2 days ago
    Reviewing
    Blue Signature™ Large Nordic Fog
    Rated 5 out of 5 stars
    Clean Air, Happy Lungs

    It is remarkable the difference the Blue Air

    product makes. We are pmeased.😊😊

  • TS
    Terry S.
    Verified Buyer
    3 days ago
    Reviewing
    Blue Signature™ Large Midnight
    Rated 5 out of 5 stars
    Blue signature large midnight

    The very best air cleaner I have found very quite an$ easy to set up overall it is the cleanest air I have experienced

  • JC
    Julliana C.
    Verified Buyer
    4 days ago
    Reviewing
    Blue Signature™ Large Nordic Fog
    Rated 5 out of 5 stars
    Great design and quality

    I like the automatic sensor that lights up and show you the number when you walk close by. I like the overall design.

  • JS
    Julia S.
    Verified Buyer
    5 days ago
    Reviewing
    Blue Signature™ Large Nordic Fog
    Rated 5 out of 5 stars
    Made a Huge Difference

    Within a day I noticed a huge difference. It’s done a fantastic job filtering out the allergens and pet/old house smell I had been living with.

  • NH
    Nicole H.
    Verified Buyer
    5 days ago
    Reviewing
    Blue Signature™ Medium Midnight
    Rated 5 out of 5 stars
    Excellent product

    Product is exceeding our expectations one month in!

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+