Winix C710 vs AT40: 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 Sep 22, 2026 05:26 PM

Tested using Methodology v1.3.1

Updated Oct 15, 2026 03:24 PM

Winix C710 Picture

Winix AT40 Picture

HEPA Certified No

Activated Carbon Sheet

HEPA Certified No

Activated Carbon Sheet

Our Verdict

Winix C710

Winix AT40

The Winix C710 is slightly better than the Winix AT40, though both offer good particle filtration performance and similar features. The C710 cleans the air slightly faster, particularly at quieter fan speeds, making it a better option for bedrooms where you want to keep noise down. It also has a display that shows the detected concentration of fine airborne particles, giving you more detailed information about your air quality. Otherwise, both have similar footprints, app connectivity, and automatic fan adjustment.

Variants

C710 (White)

AT40 (White)

Review

See Winix C710 Review

See Winix AT40 Review

Check Price

White

C710

White

AT40

White

C710

White

AT40

White

C710

White

AT40

White

C710

White

AT40

White

C710

White

AT40

White

C710

White

AT40

White

C710

White

AT40

Main Differences for

Pets

Threshold

0.10

Pets

8.0

7.9

Particle Filtration Rate

8.0

7.8

Full Comparison

Pets

8.0

7.9

Particle Filtration Rate

8.0

7.8

Bedroom

8.0

8.0

Footprint

7.3

7.3

Design

Body

Weight

9.0 lbs (4.1 kg)

10.4 lbs (4.7 kg)

Power Cord Length

87.4" (222.0 cm)

87.8" (223.0 cm)

Wheels

No

No

Footprint

7.3

7.3

Compactness Photo

Compare High-Res

Winix C710 Compactness Photo

Compare High-Res

Winix AT40 Compactness Photo

Width

10.4" (26.5 cm)

10.5" (26.6 cm)

Depth

10.4" (26.5 cm)

10.5" (26.6 cm)

Height

18.5" (47.1 cm)

19.1" (48.4 cm)

Display And Control

Main Controls

Compare High-Res

Winix C710 Main Controls

Compare High-Res

Winix AT40 Main Controls

Alternative Controls

Compare High-Res

Winix C710 Alternative Controls

Compare High-Res

Winix AT40 Alternative Controls

Filter Change Indicator

Yes

Yes

Air Quality Sensor Auto Mode

Yes

Yes

Remote Control

No

No

App

Yes

Yes

Display On/Off

Dimmable only

Dimmable only

Timer Function

Yes

Yes

Number Of Fan Speeds

5

5

Filter Configuration

Filter Configuration Photo

Compare High-Res

Winix C710 Filter Configuration Photo

Compare High-Res

Winix AT40 Filter Configuration Photo

Filter Localization Photo

Compare High-Res

Winix C710 Filter Localization Photo

Compare High-Res

Winix AT40 Filter Localization Photo

HEPA Certified

No

No

Filtration Layers

3 Stage

3 Stage

Activated Carbon

Sheet

Sheet

Performance

Particle Filtration Rate

8.0

7.8

Purification Graph

Preview Graph

Winix C710 Purification Graph

Preview Graph

Winix AT40 Purification Graph

Measured PM1.0 CADR

420 m³/hr (247 CFM)

383 m³/hr (225 CFM)

Recommended Room Size @ Max Fan Speed

35.9 m² (386 ft²)

32.7 m² (352 ft²)

Low-Noise Particle Filtration Rate

6.9

6.6

Purification Graph @ ≤ 45dBA

Preview Graph

Winix C710 Purification Graph @ ≤ 45dBA

Preview Graph

Winix AT40 Purification Graph @ ≤ 45dBA

Measured PM1.0 CADR

158 m³/hr (93 CFM)

139 m³/hr (82 CFM)

Fan Speed Used

Speed 3

Speed 3

Recommended Room Size

13.5 m² (145 ft²)

11.9 m² (128 ft²)

Noise

8.0

8.1

Noise Video

Noise @ Lowest Fan Speed

31.4dBA

31.5dBA

Noise @ Highest Fan Speed

64.7dBA

63.9dBA

Check Price

White

C710

White

AT40

White

C710

White

AT40

White

C710

White

AT40

White

C710

White

AT40

White

C710

White

AT40

White

C710

White

AT40

White

C710

White

AT40

Winix C710

Winix AT40

Comments

Comparison

• Posted 1 day ago

Winix C710 vs Winix AT40: Main Discussion

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