Dyson Purifier Cool PC1 vs Blueair Blue Signature Small: 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 06:53 PM

Tested using Methodology v1.3.1

Updated Jul 17, 2026 03:38 PM

Dyson Purifier Cool PC1 Picture

Blueair Blue Signature Small Picture

HEPA Certified Yes

Activated Carbon Sheet

HEPA Certified No

Activated Carbon Sheet

Our Verdict

Dyson Purifier Cool PC1

Blueair Blue Signature Small

The Blueair Blue Signature Small is a better air purifier than the Dyson Purifier Cool PC1. It delivers substantially stronger particle filtration while also running more quietly, making it the better choice for bedrooms and other small to medium-sized spaces. The Dyson's primary advantages are that it works as a fan and includes a remote control, while the Blueair is designed solely for air purification. That said, unlike the Dyson, the Blueair's ionization system can't be disabled.

Variants

Purifier Cool PC1 (White)

Blue Signature Small (Gray)

Review

See Dyson Purifier Cool PC1 Review

See Blueair Blue Signature Small Review

Check Price

White

Purifier Cool PC1

Gray

Blue Signature Small

White

Purifier Cool PC1

Gray

Blue Signature Small

White

Purifier Cool PC1

Gray

Blue Signature Small

White

Purifier Cool PC1

Gray

Blue Signature Small

White

Purifier Cool PC1

Gray

Blue Signature Small

White

Purifier Cool PC1

Gray

Blue Signature Small

White

Purifier Cool PC1

Main Differences for

Pets

Threshold

0.10

Pets

5.6

7.6

Particle Filtration Rate

5.5

7.2

Noise

6.0

9.2

Full Comparison

Pets

5.6

7.6

Particle Filtration Rate

5.5

7.2

Bedroom

5.8

8.5

Footprint

7.2

7.6

Design

Body

Weight

10.4 lbs (4.7 kg)

5.7 lbs (2.6 kg)

Power Cord Length

70.9" (180.0 cm)

74.0" (188.0 cm)

Wheels

No

No

Footprint

7.2

7.6

Compactness Photo

Compare High-Res

Dyson Purifier Cool PC1 Compactness Photo

Compare High-Res

Blueair Blue Signature Small Compactness Photo

Width

8.7" (22.0 cm)

9.4" (24.0 cm)

Depth

8.7" (22.0 cm)

9.5" (24.1 cm)

Height

41.4" (105.1 cm)

13.8" (35.1 cm)

Display And Control

Main Controls

Compare High-Res

Dyson Purifier Cool PC1 Main Controls

Compare High-Res

Blueair Blue Signature Small Main Controls

Alternative Controls

Compare High-Res

Dyson Purifier Cool PC1 Alternative Controls

Compare High-Res

Blueair Blue Signature Small 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 Purifier Cool PC1 Filter Configuration Photo

Compare High-Res

Blueair Blue Signature Small Filter Configuration Photo

Filter Localization Photo

Compare High-Res

Dyson Purifier Cool PC1 Filter Localization Photo

Compare High-Res

Blueair Blue Signature Small Filter Localization Photo

HEPA Certified

Yes

No

Filtration Layers

2 Stage

4 Stage

Activated Carbon

Sheet

Sheet

Performance

Particle Filtration Rate

5.5

7.2

Purification Graph

Preview Graph

Dyson Purifier Cool PC1 Purification Graph

Preview Graph

Blueair Blue Signature Small Purification Graph

Measured PM1.0 CADR

128 m³/hr (76 CFM)

290 m³/hr (171 CFM)

Recommended Room Size @ Max Fan Speed

11.0 m² (118 ft²)

24.7 m² (266 ft²)

Low-Noise Particle Filtration Rate

5.1

7.1

Purification Graph @ ≤ 45dBA

Preview Graph

Dyson Purifier Cool PC1 Purification Graph @ ≤ 45dBA

Preview Graph

Blueair Blue Signature Small Purification Graph @ ≤ 45dBA

Measured PM1.0 CADR

82 m³/hr (48 CFM)

170 m³/hr (100 CFM)

Fan Speed Used

Speed 8

Speed 3

Recommended Room Size

7.0 m² (75 ft²)

14.5 m² (156 ft²)

Noise

6.0

9.2

Noise Video

Noise @ Lowest Fan Speed

35.5dBA

30.6dBA

Noise @ Highest Fan Speed

53.8dBA

49.6dBA

Check Price

White

Purifier Cool PC1

Gray

Blue Signature Small

White

Purifier Cool PC1

Gray

Blue Signature Small

White

Purifier Cool PC1

Gray

Blue Signature Small

White

Purifier Cool PC1

Gray

Blue Signature Small

White

Purifier Cool PC1

Gray

Blue Signature Small

White

Purifier Cool PC1

Gray

Blue Signature Small

White

Purifier Cool PC1

Dyson Purifier Cool PC1

Blueair Blue Signature Small

Comments

Comparison

• Posted 1 month ago

Dyson Purifier Cool PC1 vs Blueair Blue Signature Small: Main Discussion

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