Dyson Find+Follow Purifier Cool vs Blueair Blue Signature Large: 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 Jul 14, 2026 06:52 PM

Tested using Methodology v1.3.1

Updated Jul 14, 2026 06:51 PM

Dyson Find+Follow Purifier Cool Picture

Blueair Blue Signature Large Picture

HEPA Certified Yes

Activated Carbon Sheet

HEPA Certified No

Activated Carbon Sheet

Recommended in 8 articles:
Air Purifiers
Pets
Allergies
5

Our Verdict

Dyson Find+Follow Purifier Cool

Blueair Blue Signature Large

As an air purifier, the Blueair Blue Signature Large outperforms the Dyson Find+Follow Purifier Cool in virtually every key metric. At both units' maximum fan speeds, the Blueair can reduce particle levels in an equivalently sized space nearly six times as fast. Not only that, the Blueair runs quieter at its lowest fan speed, and while its overall design is rather wide and squat, it doubles as a piece of functional furniture thanks to its flat top.

Variants

Find+Follow Purifier Cool (PC3)

Blue Signature Large (Nordic Fog)

Review

See Dyson Find+Follow Purifier Cool Review

See Blueair Blue Signature Large Review

Check Price

PC3

Find+Follow Purifier Cool

Nordic Fog

Blue Signature Large

PC3

Find+Follow Purifier Cool

Nordic Fog

Blue Signature Large

PC3

Find+Follow Purifier Cool

Nordic Fog

Blue Signature Large

PC3

Find+Follow Purifier Cool

Nordic Fog

Blue Signature Large

PC3

Find+Follow Purifier Cool

Nordic Fog

Blue Signature Large

PC3

Find+Follow Purifier Cool

Nordic Fog

Blue Signature Large

Main Differences for

Pets

Threshold

0.10

Pets

5.7

9.1

Particle Filtration Rate

5.5

9.1

Noise

6.4

8.9

Full Comparison

Pets

5.7

9.1

Particle Filtration Rate

5.5

9.1

Bedroom

6.1

9.0

Footprint

7.2

6.0

Design

Body

Weight

10.1 lbs (4.6 kg)

12.1 lbs (5.5 kg)

Power Cord Length

73.4" (186.4 cm)

73.4" (186.5 cm)

Wheels

No

No

Footprint

7.2

6.0

Compactness Photo

Compare High-Res

Dyson Find+Follow Purifier Cool Compactness Photo

Compare High-Res

Blueair Blue Signature Large Compactness Photo

Width

8.7" (22.0 cm)

14.4" (36.7 cm)

Depth

8.7" (22.0 cm)

14.4" (36.7 cm)

Height

41.4" (105.2 cm)

17.0" (43.2 cm)

Display And Control

Main Controls

Compare High-Res

Dyson Find+Follow Purifier Cool Main Controls

Compare High-Res

Blueair Blue Signature Large Main Controls

Alternative Controls

Compare High-Res

Dyson Find+Follow Purifier Cool Alternative Controls

Compare High-Res

Blueair Blue Signature Large Alternative Controls

Filter Change Indicator

Yes

Yes

Air Quality Sensor Auto Mode

Yes

Yes

Remote Control

Yes

No

App

Yes

Yes

Display On/Off

Dimmable only

Yes

Timer Function

Yes

Yes

Number Of Fan Speeds

10

5

Filter Configuration

Filter Configuration Photo

Compare High-Res

Dyson Find+Follow Purifier Cool Filter Configuration Photo

Compare High-Res

Blueair Blue Signature Large Filter Configuration Photo

Filter Localization Photo

Compare High-Res

Dyson Find+Follow Purifier Cool Filter Localization Photo

Compare High-Res

Blueair Blue Signature Large Filter Localization Photo

HEPA Certified

Yes

No

Filtration Layers

2 Stage

4 Stage

Activated Carbon

Sheet

Sheet

Performance

Particle Filtration Rate

5.5

9.1

Purification Graph

Preview Graph

Dyson Find+Follow Purifier Cool Purification Graph

Preview Graph

Blueair Blue Signature Large Purification Graph

Measured PM1.0 CADR

126 m³/hr (74 CFM)

729 m³/hr (429 CFM)

Recommended Room Size @ Max Fan Speed

10.7 m² (116 ft²)

62.2 m² (670 ft²)

Low-Noise Particle Filtration Rate

5.4

8.4

Purification Graph @ ≤ 45dBA

Preview Graph

Dyson Find+Follow Purifier Cool Purification Graph @ ≤ 45dBA

Preview Graph

Blueair Blue Signature Large Purification Graph @ ≤ 45dBA

Measured PM1.0 CADR

91 m³/hr (53 CFM)

361 m³/hr (213 CFM)

Fan Speed Used

Speed 8

Speed 2

Recommended Room Size

7.8 m² (83 ft²)

30.8 m² (332 ft²)

Noise

6.4

8.9

Noise Video

Noise @ Lowest Fan Speed

34.7dBA

31.2dBA

Noise @ Highest Fan Speed

52.9dBA

58.2dBA

Check Price

PC3

Find+Follow Purifier Cool

Nordic Fog

Blue Signature Large

PC3

Find+Follow Purifier Cool

Nordic Fog

Blue Signature Large

PC3

Find+Follow Purifier Cool

Nordic Fog

Blue Signature Large

PC3

Find+Follow Purifier Cool

Nordic Fog

Blue Signature Large

PC3

Find+Follow Purifier Cool

Nordic Fog

Blue Signature Large

PC3

Find+Follow Purifier Cool

Nordic Fog

Blue Signature Large

Dyson Find+Follow Purifier Cool

Blueair Blue Signature Large

Comments

Comparison

• Posted 1 month ago

Dyson Find+Follow Purifier Cool vs Blueair Blue Signature Large: Main Discussion

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