Blueair Blue Signature Large vs Sans Air Purifier: Which Air Purifier Is Better? - RTINGS.com

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Main Differences

Display And Control

Filter Configuration

Particle Filtration Rate

Low-Noise Particle Filtration Rate

Products

Tested using Methodology v1.3.1

Updated Aug 11, 2026 12:46 PM

Tested using Methodology v1.3.1

Updated Aug 12, 2026 12:53 PM

Blueair Blue Signature Large Picture

Sans Air Purifier Picture

HEPA Certified No

Activated Carbon Sheet

HEPA Certified No

Activated Carbon Pellets

Recommended in 9 articles:
Air Purifiers
Pets
Allergies
6

Our Verdict

Blueair Blue Signature Large

Sans Air Purifier

The Blueair Blue Signature Large is a significantly more capable air purifier than the Sans Air Purifier. At each unit's maximum fan speed, the Blueair can deliver the same level of air quality in about half the time, making it a far more versatile option for larger spaces. It also runs quieter than the Sans at its highest fan speed, and while it's bulkier than the Sans, the Blueair's flat top lets you use it as functional furniture.

Variants

Blue Signature Large (Nordic Fog)

Air Purifier (Agave)
Air Purifier (Midnight)

Review

See Blueair Blue Signature Large Review

See Sans Air Purifier Review

Check Price

Nordic Fog

Blue Signature Large

Agave

Air Purifier

Nordic Fog

Blue Signature Large

Midnight

Air Purifier

Nordic Fog

Blue Signature Large

Sand

Air Purifier

Nordic Fog

Blue Signature Large

White

Air Purifier

Nordic Fog

Blue Signature Large

Nordic Fog

Blue Signature Large

Main Differences for

Pets

Threshold

0.10

Pets

9.1

7.9

Particle Filtration Rate

9.1

7.9

Noise

8.9

7.9

Full Comparison

Pets

9.1

7.9

Particle Filtration Rate

9.1

7.9

Bedroom

9.0

7.9

Footprint

6.0

7.1

Design

Body

Weight

12.1 lbs (5.5 kg)

10.8 lbs (4.9 kg)

Power Cord Length

73.4" (186.5 cm)

77.4" (196.5 cm)

Wheels

No

No

Footprint

6.0

7.1

Compactness Photo

Compare High-Res

Blueair Blue Signature Large Compactness Photo

Compare High-Res

Sans Air Purifier Compactness Photo

Width

14.4" (36.7 cm)

10.0" (25.4 cm)

Depth

14.4" (36.7 cm)

11.6" (29.4 cm)

Height

17.0" (43.2 cm)

20.0" (50.9 cm)

Display And Control

Main Controls

Compare High-Res

Blueair Blue Signature Large Main Controls

Compare High-Res

Sans Air Purifier Main Controls

Alternative Controls

Compare High-Res

Blueair Blue Signature Large Alternative Controls

Compare High-Res

Sans Air Purifier Alternative Controls

Filter Change Indicator

Yes

Yes

Air Quality Sensor Auto Mode

Yes

Yes

Remote Control

No

No

App

Yes

No

Display On/Off

Yes

Yes

Timer Function

Yes

Yes

Number Of Fan Speeds

5

3

Filter Configuration

Filter Configuration Photo

Compare High-Res

Blueair Blue Signature Large Filter Configuration Photo

Compare High-Res

Sans Air Purifier Filter Configuration Photo

Filter Localization Photo

Compare High-Res

Blueair Blue Signature Large Filter Localization Photo

Compare High-Res

Sans Air Purifier Filter Localization Photo

HEPA Certified

No

No

Filtration Layers

4 Stage

3 Stage

Activated Carbon

Sheet

Pellets

Performance

Particle Filtration Rate

9.1

7.9

Purification Graph

Preview Graph

Blueair Blue Signature Large Purification Graph

Preview Graph

Sans Air Purifier Purification Graph

Measured PM1.0 CADR

729 m³/hr (429 CFM)

391 m³/hr (230 CFM)

Recommended Room Size @ Max Fan Speed

62.2 m² (670 ft²)

33.4 m² (359 ft²)

Low-Noise Particle Filtration Rate

8.4

7.3

Purification Graph @ ≤ 45dBA

Preview Graph

Blueair Blue Signature Large Purification Graph @ ≤ 45dBA

Preview Graph

Sans Air Purifier Purification Graph @ ≤ 45dBA

Measured PM1.0 CADR

361 m³/hr (213 CFM)

185 m³/hr (109 CFM)

Fan Speed Used

Speed 2

Med

Recommended Room Size

30.8 m² (332 ft²)

15.8 m² (170 ft²)

Noise

8.9

7.9

Noise Video

Noise @ Lowest Fan Speed

31.2dBA

32.6dBA

Noise @ Highest Fan Speed

58.2dBA

62.9dBA

Check Price

Nordic Fog

Blue Signature Large

Agave

Air Purifier

Nordic Fog

Blue Signature Large

Midnight

Air Purifier

Nordic Fog

Blue Signature Large

Sand

Air Purifier

Nordic Fog

Blue Signature Large

White

Air Purifier

Nordic Fog

Blue Signature Large

Nordic Fog

Blue Signature Large

Blueair Blue Signature Large

Sans Air Purifier

Comments

Comparison

• Posted 1 month ago

Blueair Blue Signature Large vs Sans Air Purifier: Main Discussion

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