Xiaomi Mi Air Purifier Pro at a glance
At the end of 2021, Stiftung Warentest tested air filters. In addition to the air purification itself, criteria such as handling, environmental properties and safety were also evaluated. Expensive models can cost several hundred euros, but the test winner is also the price tip at around 200 euros. In addition to good (grade 1.8) air filtering, the device also scores with strong security features in the air purifier itself. The connected app, on the other hand, causes a point deduction due to critical data transmission behavior.
Our assessment
In the test, the Xiaomi Mi Air Purifier Pro particularly impressed with its equally good filtering of pollen, aerosols and formaldehyde. Added to this is good handling and a high level of safety. However, long-term costs and an app that is critical in terms of data protection result in deductions.
The detailed purchase advice can be found here.
Xiaomi Mi Air Purifier Pro: More offers at a glance
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Air purifier – what does it really do?
Good air filters do what their name promises: They filter the air from pollutants, pollen, bacteria and – currently particularly important – viruses such as SARS-CoV-2. This is confirmed by a test by Stiftung Warentest.
With a fresh filter, all test devices are able to collect airborne aerosol particles that carry and spread the viruses. The product testers exposed the air filters to paraffin oil particles of various sizes, including the size of the corona virus, in a test chamber.
After 20 minutes, the concentration of particles in the air had dropped by 90 to 96 percent. But the air filters are not only an option during the pandemic, but can also be a solution, especially for allergy sufferers: All devices successfully filter pollen.
And what about corona viruses?
Although some air purifiers can filter a large part of the aerosols out of the air, they can easily give a false sense of security, warns the NRW consumer advice center.
Although the devices can reduce the number of viruses in the air, they cannot prevent transmission in close contact (below 1.5 m). Therefore, they are only a supporting measure to reduce aerosols in the room air, according to the consumer advocates. Protective measures such as ventilation and distance remain essential.
In order to reduce the virus concentration in the room air, it is best to air the room for five minutes with the window wide open. Short cross-ventilation with a draft is ideal for rapid air exchange with the lowest possible heat loss. The permanently tilted window, on the other hand, is less effective.