Blue Signature™ Large

Name: Blue Signature™ Large Nordic Fog
Brand: Blueair
Price: 449.99 USD
Availability: InStock
Rating: 4.6 (253 reviews)

Air Purifier, Extra-large Rooms

4.6

Rated 4.6 out of 5 stars

4.6 Stars (253 Reviews)

Size: Large

Color: Nordic Fog

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

Subscribe & save 25% off your first filter

Customize your Blue Signature™

Pre-Filter| Nordic Fog$24.99

Wood Leg Base$79.99

Chrome Ring Base$99.99

Replacement Filter$99.99

The most powerful, compact air purifier you can get.

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

Additional Features

Wi-Fi connectivity for remote control Yes
On/ off timer Yes, via Blueair App
Speed control options 1 - 2 - 3 - 4 - Auto - Night
Integrated air sensors Yes

Shipping & Warranty

Free & fast shipping
30 day home trial
Free extended warranty

Why choose Blue Signature™?

Doubles as a table-top & much more

Make it yours. Choose from curated pre-filter colors and accessories that elevate your space.
Dynamically displays your air quality

See your air quality at a glance. The motion-activated display responds to your preferences in real time.

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

Smart control in the highly rated & newly upgraded Blueair app

Effortlessly take control of your air

Select a fan speed, let auto or night mode take over & keep settings secure with display lock.
Customize schedules to fit your lifestyle

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.
Smart filter lifetime tracking

Tracks the filter lifetime based on pollutant levels and alerts you when it’s time to replace your filter.

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

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

What is the warranty for Blue Signature™?

How often do I need to change the filter?

You filter will last up to 1 year thanks to our unique patent-pending design & 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 are the noise levels?

What room size is best?

4.6

Rated 4.6 out of 5 stars

Based on 253 reviews

Total 5 star reviews: 205 Total 4 star reviews: 17 Total 3 star reviews: 16 Total 2 star reviews: 4 Total 1 star reviews: 11

88%would recommend these products

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253 reviews

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ER
Edward R.
Verified Buyer
4 hours ago
Reviewing
Blue Signature™ Large Nordic Fog
Rated 5 out of 5 stars
Works as advertised
I have several Blueair products. I bought this one for a downstairs area that had musty smell at times. It works great, and the odor was eliminated.
Was this helpful?
DB
David B. (.
Verified Buyer
11 hours ago
Reviewing
Blue Signature™ Large Midnight
Rated 5 out of 5 stars
Blue Air signature
Powerfull ...love it ..its pretty too
Was this helpful?
MT
Martha T. B.
Verified Buyer
6 days ago
Reviewing
Blue Signature™ Small Knicks Limited Edition
Rated 5 out of 5 stars
Blue Knicks
Works great!
Was this helpful?
LH
Loren H.
Verified Buyer
1 week ago
Reviewing
Blue Signature™ Small Nordic Fog
Rated 5 out of 5 stars
An improved control panel
We got this Small Nordic Fog unit for a bedroom, and it seems to be working just fine. I was a bit surprised when the controls lit up every time I (or our dog) neared the unit, unlike the 311i unit we have in our great room.
Was this helpful?
HK
HOWARD K.
Verified Buyer
2 weeks ago
Reviewing
Blue Signature™ Small Nordic Fog
Rated 5 out of 5 stars
Awesome Purifier
Of all the air purifiers I have tried Blueair is the very BEST. They operate exactly as described, super quite, except when they detect pollutants and then go into overdrive, which is exactly the way it should be. The automatic mode is perfect, set it and forget it. I have 3 Blue Signatures small, medium and large. I have definetly noticed the difference in the house since having them. Easy to setup and pair with my Wi-Fi.
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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+

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