PuroAir 240 vs Dreo Air Purifier 338S

Tested using Methodology v1.3.1

Updated Aug 10, 2026 04:33 PM

This review is in Early access

See Dreo Air Purifier 338S Review

HEPA Certified No

Activated Carbon Pellets

HEPA Certified Yes

Activated Carbon Pellets

Our Verdict

PuroAir 240

Dreo Air Purifier 338S

Full comparison details regarding individual product score sets can be found in the section below

Variants

240 (Black)
240 (Black (2-pack))

Air Purifier 338S (Black)
Air Purifier 338S (White)

Review

See PuroAir 240 Review

Check Price

Black

240

Black

Air Purifier 338S

Black (2-pack)

240

White

Air Purifier 338S

Main Differences for

Pets

Threshold

0.10

Pets

6.5

0.0

No major differences between these air purifiers for pets. See full list of tests below.

Full Comparison

Pets

6.5

0.0

Particle Filtration Rate

6.0

0.0

Bedroom

7.6

0.0

Footprint

7.9

0.0

Design

Body

Weight

7.1 lbs (3.2 kg)

Lock lbs (Lock kg)

Power Cord Length

64.4" (163.5 cm)

Lock" (Lock cm)

Wheels

Locked

Footprint

7.9

N/A

Compactness Photo

SAMPLE

for pictures & test results

Width

8.6" (21.9 cm)

Lock" (Lock cm)

Depth

8.6" (21.9 cm)

Lock" (Lock cm)

Height

14.2" (36.0 cm)

Lock" (Lock cm)

Display And Control

Main Controls

SAMPLE

for pictures & test results

Alternative Controls

SAMPLE

for pictures & test results

Filter Change Indicator

Yes

Locked

Air Quality Sensor Auto Mode

Yes

Locked

Remote Control

Locked

App

Locked

Display On/Off

Yes

Locked

Timer Function

Yes

Locked

Number Of Fan Speeds

Lock

Filter Configuration

Filter Configuration Photo

SAMPLE

for pictures & test results

Filter Localization Photo

SAMPLE

for pictures & test results

HEPA Certified

Locked

Filtration Layers

3 Stage

Locked

Activated Carbon

Pellets

Locked

Performance

Particle Filtration Rate

6.0

N/A

Purification Graph

Preview Graph

SAMPLE

for pictures & test results

Measured PM1.0 CADR

157 m³/hr (92 CFM)

Lock m³/hr (Lock CFM)

Recommended Room Size @ Max Fan Speed

13.4 m² (144 ft²)

Lock m² (Lock ft²)

Low-Noise Particle Filtration Rate

5.0

N/A

Purification Graph @ ≤ 45dBA

Preview Graph

SAMPLE

for pictures & test results

Measured PM1.0 CADR

79 m³/hr (47 CFM)

Lock m³/hr (Lock CFM)

Fan Speed Used

Speed 2

Locked

Recommended Room Size

6.8 m² (73 ft²)

Lock m² (Lock ft²)

Noise

8.4

N/A

Noise Video

SAMPLE

for videos & test results

Noise @ Lowest Fan Speed

33.0dBA

LockdBA

Noise @ Highest Fan Speed

53.4dBA

LockdBA

Check Price

Black

240

Black

Air Purifier 338S

Black (2-pack)

240

White

Air Purifier 338S