Indoor air quality has slowly become a modern health priority. Dreame’s latest product, the AirPursue PM20 Purifier , pushes past the limits of being ‘just’ a purifier. With intelligent radar detection, adaptive airflow control, and a multifunctional design that doubles as a heater and circulator, the PM20 is designed as a full-scale comfort system for households.
At first glance, the PM20 looks contemporary yet understated, with a cylindrical shape (Φ350mm × H837mm) that integrates into your home. The hidden wheels underneath make it simple to move around without any hassle. The LCD screen is bright, responsive, and easy to use, capable of showing real-time readings of PM1, PM2.5, PM10, formaldehyde, VOCs, temperature, and humidity.

Smarter Purification: Enviro Detect
What sets the PM20 apart is Enviro Detect Technology. Unlike conventional purifiers, it uses radar to detect human presence within a 5-meter, 120° range. Walk into the room, and the PM20 powers on automatically, adjusting airflow direction to follow you. With multiple people, the outlet intelligently shifts coverage side to side, ensuring a clean-air coverage zone. This is a first-of-its-kind feature for Dreame, and it works. During testing, the unit consistently responded to movement.
Air That Adapts: Dualflow Modulation
The PM20 also introduces Dualflow Modulation Technology. Instead of pushing air in one direction, it projects ultra-fast upward airflow and ultra-long forward airflow simultaneously. The result is a 400m³/h Clean Air Delivery Rate (CADR) that evenly reaches up to 32.8 feet, covering a uniform area of 1883 square feet.
Compared to competitors like Dyson and LG, the PM20’s airflow feels more dynamic and provides more efficient circulation. During hot weather, it works as a cooling fan, and in the winter, its 3-second heat-up feature provides warm, clean air almost instantly.
Filtration That Lasts
Inside, a 4-layer filtration system handles the heavy lifting:
- Magnetic Pre-Filter – Blocks hair and larger debris.
- High-Efficiency Composite Filter (H13 HEPA) – Captures particles as small as 0.3µm, including pollen, dust mites, and bacteria.
- Activated Carbon Layer – Adsorbs harmful VOCs, smoke, and odors.
- Formaldehyde-Catalyst Filter – Continuously decomposes formaldehyde into water and CO₂ without replacement.
Dreame says that the PM20 removes up to 14 types of air pollutants and nine types of bacteria and viruses. In real-world use, it effectively handled pet dander and kitchen odors. With a filter life of up to 2 years, maintenance is refreshingly low.
Verdict: Everyday Usability

At just 32dB(A) in night mode, the Dreame AirPursue PM20 is whisper-quiet. Between Enviro Detect, Dualflow circulation, rapid heating, and medical-grade filtration, it goes beyond purification to redefine indoor comfort.
For households with children, seniors, or anyone prone to allergies, the PM20 provides both peace of mind and tangible comfort. Auto, Comfort, and Pet Mode make the product ideal for households with furry companions. And for IoT enjoyers, its app and voice integration make it a natural fit for smart homes. Bottom line: If you’re looking for a purifier that goes beyond clean air to deliver adaptive, year-round comfort, for $999, the PM20 deserves a spot at the top of your list.