The smart purifier that moves with you and brings you clean air, and that’s not its only ace up its sleeve.
Introduction
With Dreame’s expansion into the home technology sector, the brand is no longer associated exclusively with robots and cleaning solutions. In recent years, the company has progressively expanded its presence into both small and large home appliances, entering increasingly diverse categories.The Dreame PM20 AirPursue represents an important strategic step: it is not simply the brand’s first air purifier, but a clear signal of Dreame’s intention to cover every aspect of home care. After cleaning technologies, the focus now shifts to an often invisible but fundamental element for everyday well-being: air quality and comfort.With significant declared power, advanced intelligent modes and a unique feature of its kind, thanks to Enviro Detect radar technology and AI Follow mode, which directs airflow toward the user, the PM20 positions itself as a technologically advanced solution to concretely improve the air we breathe at home, integrating design, multi-layer filtration and smart management into a single device.
Design and construction
The Dreame PM20 AirPursue is a substantial device in both size and visual presence. Standing at approximately 85 cm tall, with a cylindrical structure and a rotatable upper head, it is not designed to be hidden, but to be displayed, provided of course that the design appeals to you.There is no denying that, aesthetically, the PM20 takes inspiration from the formal language of high-end Dyson purifiers: rounded head, cylindrical body. However, reducing the project to a simple stylistic resemblance would be superficial.Behind this design choice there is not only an aesthetic reference, but a precise technical logic. The separation between body and head allows:more controlled airflow distributionindependent management of airflow direction up to 180°integration of the Enviro Detect radar systembetter modulation between suction and projectionThe overall construction gives a premium feel: high-quality materials, well-assembled components, smooth panels, understated finishes without sharp edges, with controls and displays positioned intuitively.The upper head integrates the LCD display that shows air quality, detected pollutants, operating modes, temperature, humidity and filter status, useful and well integrated into the large central “eye”, although slightly small compared to the wide available space. The base features integrated wheels, an essential detail considering its size and 12.7 kg weight: moving it between rooms is easy and does not require lifting it, although you’ll need some muscle if you want to move it to another floor.
Sensors and filtration system
One of the most interesting aspects is its ability to detect, thanks to its 7D sensors, up to 14 environmental parameters, including:
- PM1What it is: particles with diameter ≤ 1 micron, among the most dangerous because they penetrate deep into the lungs and can enter the bloodstream, typically combustion residues such as cigarette smoke and candles, smog, cooking fumes, viruses.
- PM2.5What it is: particles with diameter ≤ 2.5 microns, the most commonly used parameter in air quality indexes (AQI), typically fine traffic dust, allergens, molds, bacteria.
- PM10What it is: particles ≤ 10 microns, including visible dust, fine sand, pollen, larger particles.
- HCHO (Formaldehyde)
- TVOC (Total Volatile Organic Compounds)What it is: does not indicate a specific substance but an overall concentration of volatile chemical and organic substances, including formaldehyde, solvents, ammonia, benzene, emissions from glues and paints.
- temperature
- humidity
The system does not detect CO₂, and this is the only significant technical absence for a product in this category.
The heart of an air purifier is its filtration system, and in this respect the Dreame PM20 performs very well.It integrates a multi-stage filtration system consisting of:
Magnetic pre-filter: captures larger particles such as dust, hair and fibers.
HEPA H13 filter: capable of intercepting ultrafine particles, including:
PM1
PM2.5
PM10
Activated carbon filter: specific for:
irritating
gaseskitchen and pet odors
TVOC4.
“Formaldehyde-Cata” filter integrated into the activated carbon filter.
The Formaldehyde-Cata filter is a specialized catalytic layer that does not merely trap formaldehyde, which is a carcinogenic gas, but decomposes it into water (H₂O) and carbon dioxide (CO₂) through a catalyst (MnO₂) present in the filtering material. This process differs from traditional carbon filters that only absorb gases: here formaldehyde is converted into safer compounds, reducing accumulation inside the filter and lowering replacement frequency.
Plasma and IonizationThe system generates high-energy ions and cold plasma that are released into the airflow. They destabilize bacterial and viral cell membranes, oxidize volatile organic compounds and help neutralize odors.
UVC – Ultraviolet sanitizationUVC is ultraviolet radiation at a germicidal wavelength, it damages the DNA and RNA of viruses and bacteria, prevents microorganism replication and reduces biological load in the airflow
The system is designed for differentiated replacement:
- activated carbon/Cata filter: every 6–12 months
- HEPA filter: every 16–24 months
This combination allows the Dreame PM20 to handle fine particles, viruses and bacteria, gases and persistent odors, offering a complete purification experience.
Performance and purification capacity
The central technical figure is the 400 m³/h CADR, suitable for rooms up to ~100 m² or spaces requiring rapid purification.
The PM20 is designed for large rooms and open spaces, where substantial airflow is needed to ensure effective air exchange. This is where DualFlow technology with two air outlets comes into play. This allows the PM20 to accelerate overall purification and cover large areas more evenly.
During my test in an open space environment of about 60 m², and after an intense cooking session, the device showed:
- Almost immediate sensor activation and detection of pollutant peak
- Return to “Excellent” air quality in about 10 minutes
This is not a laboratory test, but it represents a realistic scenario.
The app provides historical data and qualitative classifications (“excellent”, “good”, “moderate”, “poor”), making interpretation accessible even to those unfamiliar with technical parameters.
Inside the technology: Static CADR vs Perceived CADR
When discussing air purifiers, one of the most cited figures is CADR, which stands for Clean Air Delivery Rate. But what does this number really mean? And above all, what changes between static CADR and perceived CADR?
Static CADR
Static CADR is the value measured in laboratory conditions.
It indicates how many cubic meters of clean air the device can deliver per hour.
A CADR of 400 m³/h means that, theoretically, the purifier can treat 400 cubic meters of air every hour. It is a fundamental figure for sizing the product according to the room:
But this is only half the story.
The limitation of static CADR is that it is measured as uniform airflow in a neutral environment with homogeneous distribution
In real domestic environments, however, rooms are not symmetrical, airflow meets obstacles and people move
Here a more interesting concept comes into play.
Perceived CADR
Perceived CADR is the amount of actually clean air that reaches the user’s breathing zone.
In a traditional purifier, the air is cleaned and redistributed uniformly throughout the room. The benefit is global, but the immediate perceived sensation and comfort may be less evident and require more time. In the Dreame AirPursue PM20, thanks to DualFlow and Enviro Detect, the airflow is directed toward the person in the room. In the next “inside the technology” section I will explain why perceived CADR is the strong point of the PM20 AirPursue.
Inside the technology: DualFlow and Enviro Detect
A traditional purifier draws in dirty air and releases clean air. That’s it. In the PM20, however, airflow management becomes an engineered, almost strategic system.
DualFlow technology combines two emission directions, forward and upward, to create more effective room circulation. The forward airflow can project purified air up to about 10 meters, useful for quickly reaching distant areas. The upward high-speed vertical flow promotes circulation and helps avoid stagnant air pockets. It is not just about airflow speed, but about flow and how it is distributed in space.
On this basis comes Enviro Detect, the intelligent system that makes airflow dynamic. Thanks to millimeter-wave radar, the purifier detects presence, distance and movement up to about 5 meters, without using cameras. The purifier understands where you are in the space, turns on automatically when it detects movement and, by activating AI Follow, rotates to orient the airflow toward the user with oscillation up to about 120 degrees.
When there are multiple people in the room, the iFollow system cannot obviously track everyone simultaneously, but its behavior changes depending on how they are distributed in space. The millimeter-wave radar continues detecting presence and position within about 5 meters.
If it identifies multiple subjects:
- Calculates the relative coordinates of each
- Evaluates distance and angle
- Determines an optimal “target zone”
At that point it can do two things:
- Balanced distribution
If people are distributed fairly symmetrically in front of the device, the system widens the oscillation to cover the occupied area instead of targeting a single individual.
- Proximity priority
If one person is closer or more centrally positioned relative to the device, the airflow tends to favor that area while maintaining broad coverage.
The result is less static and more focused purification: clean air is not only distributed uniformly, but directed toward the areas actually being used, with greater perceived comfort and in less time.
Operating modes
The Dreame AirPursue PM20 is not just a purifier. It also integrates:
Manual ventilation: Allows manual selection of fan speed and airflow angle at 45°/90°/180°.
Heating: Heats the air while filtering it. Ideal in winter or for direct comfort. It integrates a ceramic PTC module (Positive Temperature Coefficient), a self-regulating technology that increases temperature rapidly and stabilizes heat without spikes, with more stable temperature control and greater energy efficiency, adjustable up to 40° and taking about 3 seconds to reach the set temperature.
AI Follow: For dynamic airflow that follows users.
Pet Purify: Maximizes airflow and creates greater negative pressure in the surrounding area, working more reactively on suspended hair and odors, noise remains around 60 dB.
Comfort: Fans at minimum and screen off, in this mode operation is super quiet, almost imperceptible around 32 dB.
User experience and control
The PM20 can be controlled via:
- physical buttons
- remote control (magnetically attachable to the base)
- DreameHome app
The app is a true control center: it displays real-time data, pollutant history, filter status and allows full mode management, daily and weekly scheduling.
For those who like to monitor their home environment analytically, it is one of the most informative purifiers in its category.
What it really does well
The purification quality is extremely high. It does not simply trap VOCs and particulates, but thanks to the catalytic filter it also neutralizes formaldehyde, the HEPA captures PM1 as well and reduces viruses and bacteria with plasma and UVC, significant advantages compared to many competitors that stop at standard filtration.
The DualFlow system improves air distribution in the room, while AiFollow adds an interesting dynamic component: clean air is directed where needed, a different and brilliant way to manage comfort.
The PTC heating module, with air up to about 40°C in 3 seconds, makes it usable in winter as a purifying fan heater. In summer it can function as a directional purifying fan.
It is also designed for those who want to monitor their environment consciously: it detects multiple environmental parameters and via the app provides data and explanations about detected levels.
Limitations
There are, however, some aspects that may disappoint. The display is small, it works, but for those less familiar with digital interfaces or with weaker eyesight, it is not ideal. It is clearly designed as a complement, not as the main control center.
It does not measure CO₂. This is not a problem from a purification standpoint, because no traditional purifier reduces CO₂ without external ventilation. However, in such a complete, advanced and monitoring-oriented product, I would have expected at least a dedicated sensor. CO₂ is one of the most important indicators of indoor air quality, especially in closed or crowded environments. In a machine of this level, its absence is noticeable.
The size must also be considered: it is tall, substantial, designed for medium-large environments.
I recommend it if…
- You want to understand and monitor indoor air quality
- You are interested in formaldehyde neutralization
- You live in medium-large spaces
- You want a purifier that can also heat or ventilate
- You appreciate advanced functions
I do not recommend it if…
- You are looking for something simple and inexpensive
- You live in a small apartment with limited space
- You want a system that detects CO₂
- You are not interested in smart features and only want basic filtration
Why a purifier is no longer a luxury today
We live in a time when indoor air is not necessarily cleaner than outdoor air. Between urban traffic, fine particles, domestic heating systems, synthetic materials, detergents, new furniture, renovation work, pets and increasingly thermally insulated environments where air exchange is not always optimal, the pollutant load we are exposed to daily is constant, especially for those living in cities.
In this context, having a purifier is no longer a “technological” choice, but a choice about the quality of the environment in which we live. And the difference between a generic purifier and a complete system like the Dreame AirPursue PM20 lies precisely here: it does not simply filter common dust, but acts on fine particles, gases, VOCs, formaldehyde, viruses and bacteria.
When we spend many hours at home, working or sleeping, air quality becomes a concrete factor of well-being, not a negligible detail.
In conclusion
The AirPursue PM20 is an ambitious product. It is not the simplest, not the most compact, and with a price of €899 certainly not the most affordable, but it is one of the most complete in its category. If you are only looking for an inexpensive purifier, there are good alternatives, but if you want a system that combines advanced purification, dynamic airflow management and seasonal comfort, then it is the best you could wish for.
It is not for everyone, but for the right target it stands a head above the rest.
As usual, I’ll leave the Linktr.ee for anyone who would like to take a look at the NonSoloRobot™️ communities and social channels, you’re all very welcome, and happy smart living to everyone!
