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Blue Signature™ Fog
Blue Signature™ Fog
Blue Signature™ Fog
Blue Signature™ Fog
Blue Signature™ Fog
Blue Signature™ Fog
Blue Signature™ Fog
Blue Signature™ Fog
Blue Signature™ Fog
Blue Signature™ Fog
Blue Signature™ Fog
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Blue Signature™ Fog
Blue Signature™ Fog
Blue Signature™ Fog
Blue Signature™ Fog
Blue Signature™ Fog
Blue Signature™ Fog
Blue Signature™ Fog
Blue Signature™ Fog
Blue Signature™ Fog
Blue Signature™ Fog
Blue Signature™ Fog
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Blue Signature™

Air Purifier, Extra-large Rooms

Color: Fog
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
  • Most Popular

Important Notice for California Residents: The Blue Signature is awaiting CARB certification, required for CA sales. Expected by mid-July.

  • 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 Fog and 1 Particle & Carbon filter
  • Customize with exclusive accessories
  • Motion activated touchscreen display
  • Accurate filter lifetime tracking
  • Doubles as a table-top
Customize your Blue Signature™
Pre-filter add-on
Additional pre-filter colors to seamlessly blend into your space.
Fog
$24.99
Accessory add-on
Upgrade your air purifier with designer finishes.
$99.99

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 unit looks well designed from the get-go and has a flat top for a plant. It looks great in any room and doesn't scream, ‘I'm an appliance.’”

Alyssa

“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

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

Blue Signature™ Fog

Technical Specifications

  • Dimensions(HxWxD)

    17.2 x 15.5 x 15.5

  • Product Weight

    13.2 lbs

  • Energy Consumption

    3.5-42 W

  • Sound level

    23-55 dB

  • Air outlet

    Side

  • Recommended room size

    705 ft²

  • Air changes per hour (ACH)

    4.8

  • Clean air delivery rate (CADR)

    Pollen 450 cfm
    Dust 434 cfm
    Smoke 455 cfm

  • Number of filters

    1

  • Speed control options

    1 - 2 - 3 - 4 - Auto - Night

FAQ

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

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+