Dreame AirPursue PM20 Air Purifier: CADR, Noise, Coverage & Specs
Last verified: Aug 23, 2026
Aug 2026
Quick verdict
The Dreame AirPursue PM20 is best suited to large rooms where high airflow are priorities. Its 400 CFM smoke CADR supports about 620 sq ft at approximately 4.8 air changes per hour. Buyers should separately evaluate filter cost and maximum-speed noise before deciding.
Best for
- Large open rooms
Consider alternatives if
- You need a verified maximum-speed noise figure
- Filter replacement interval or cost is a deciding factor
- You are planning around the manufacturer coverage claim rather than CADR-based room size
Verified strengths
- 400 CFM smoke CADR (~620 sq ft at ~4.8 ACH)
- 60 dB published minimum noise
- HEPA-13, carbon, NANO filter, charcoal filter, photocatalyst UV lamp filtration (as published)
Verified limitations or missing information
- Maximum-speed noise is not in our sources
- Filter replacement interval is not verified
Dreame AirPursue PM20 overview
The Dreame AirPursue PM20 is a large-room air purifier with a smoke CADR of 400 CFM. Based on our CADR-based room-size method, it is suitable for approximately 620 sq ft. It includes HEPA-13, carbon, NANO filter, charcoal filter, photocatalyst UV lamp filtration and 60 dB minimum noise.
- Smoke CADR
- 400 CFM
- Recommended room size
- 620 sq ft
- Claimed coverage
- 7534 sq ft
- Minimum noise
- 60 dB
- Filter type
- HEPA-13, carbon, NANO filter, charcoal filter, photocatalyst UV lamp
- Dimensions
- 14.9 × 14.9 × 33.4 in
- Last verified
- Aug 23, 2026
Dreame AirPursue PM20 CADR and room size
Recommended room size is about 620 sq ft (CADR × 1.55). That is approximately 4.8 air changes per hour in a room with an eight-foot ceiling. The manufacturer figure of 7534 sq ft corresponds to about 0.4 air change per hour at the same ceiling height and is shown separately. Our recommended room size uses approximately 4.8 air changes per hour with an eight-foot ceiling. Manufacturer coverage figures may use a lower air-change rate and are shown separately.
The manufacturer coverage claim is higher than 3× CADR, so it is not used for ranking.
Dreame AirPursue PM20 noise level
Published minimum noise is 60 dB.
Maximum-speed noise is not in our sources.
Dreame AirPursue PM20 filtration
Published filter type: HEPA-13, carbon, NANO filter, charcoal filter, photocatalyst UV lamp.
Filter replacement interval is not verified in our sources.
Dreame AirPursue PM20 smart features
AI tracking, Heating (77-104F), Cooling function, Real-time air quality monitoring
Dreame AirPursue PM20 specifications
- CADR (smoke)
- 400 CFM
- Recommended room size
- 620 sq ft
- Manufacturer claimed coverage
- 7534 sq ft
- Minimum noise
- 60 dB
- Filter type
- HEPA-13, carbon, NANO filter, charcoal filter, photocatalyst UV lamp
- Dimensions
- 14.9 × 14.9 × 33.4 in
About Dreame air purifiers
Dreame models in this catalog are compared by CADR, recommended room size, noise, and filter type.
Dreame AirPursue PM20 comparisons
What is the CADR of the Dreame AirPursue PM20?
Smoke CADR is 400 CFM.
What room size is the Dreame AirPursue PM20 suitable for?
About 620 sq ft at approximately 4.8 air changes per hour with an eight-foot ceiling.
How loud is the Dreame AirPursue PM20?
Minimum reported noise: 60 dB.
Does the Dreame AirPursue PM20 have Wi-Fi?
No published Wi-Fi or app control in our sources.
What filter does the Dreame AirPursue PM20 use?
HEPA-13, carbon, NANO filter, charcoal filter, photocatalyst UV lamp.
Methodology
Specifications are compiled from manufacturer documentation, product listings and other cited sources.
How we calculate recommended room size.
Sources
All air purifiers · Best air purifiers for allergies · Methodology