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Air filters are particularly popular in spring and summer.
Because allergy sufferers in particular expect the devices to improve their quality of life.
The advantage: the room temperature can be regulated when it is hot without a fan only blowing up dust or pollen - instead, the substances are sucked in and thus filtered out of the air.
And user air purifiers are also hoping for good results when it comes to fine dust and reducing the virus load indoors.
Because the recommended, regular ventilation also keeps particles getting into the home or office.
These could be filtered so effectively.
Dyson Pure Cool: How does it work and what's so special?
One of the better known products on the market is the Dyson Pure Cool *.
Manufacturer Dyson itself advertises its product with the words: "The only air purifier that thoroughly cleans the entire living space".
The internal test results relate to a living space of 27 square meters and a filter efficiency of 0.1 micrometers.
This means that the model can theoretically catch coronaviruses of this size.
Inside there are three sensors that continuously check the air quality in real time - a particle sensor with laser measurement, a gas sensor that detects volatile organic compounds and oxidizing gases, and a humidity and temperature sensor are used.
If the concentration of particles or certain compounds in the air increases, the air purifier reacts immediately.
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The sealed filter system contains an activated carbon filter and a glass HEPA filter.
In addition, the device offers three modes: In the fan mode you can enjoy cooling air in summer, in winter, on the other hand, the distribution mode ensures that the air is cleaned without you feeling a cool draft.
The night mode is particularly quiet so that the device can also be used while sleeping.
Dyson Pure Cool Alternative: What Can Other Air Purifiers Do?
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For those who want to spend less but don't want to forego the manufacturer's technology, the Dyson Pure Cool Me * is both an alternative and a solution at the same time.
The device, which can be placed on the table, is significantly cheaper, but offers similarly good filter properties as the large floor version.
Inside, the technology directs strong air currents over a convex surface.
There they meet and form a focused flow of air that provides cool, fresh air.
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Another alternative: the Philips air purifier AC4236 *.
Its filters are also designed to remove viruses, aerosols, pollen, dust, bacteria and ultra-fine particles up to a size of 0.003 micrometers as well as odors and gases from the air.
Similar to the Pure Cool from Dyson, it can be controlled via an app.
According to the manufacturer, rooms up to 130 square meters should be cleaned effectively and quietly.
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Tip: The air purifiers Philips AC2889 / 10 *, Rowenta Intense Pure Air Connect PU PU6080 * and Soehnle Airfresh Clean Connect 500 * performed best at Stiftung Warentest in 2020.
The test winner from Philips was therefore the device that best filters cigarette smoke out of the air.
In a follow-up test, he also succeeded in permanently filtering particles the size of corona viruses from the air.
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Dyson Pure Cool Alternative: Xiaomi Air Purifier
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For just 100 euros, buyers can get the Xiaomi air purifier Bianco *.
Inside is a True HEPA filter, which, according to the manufacturer, filters 99.97 percent smoke, house dust, animal hair, mold spores, pollen and other fine particles.
Also available for less than 200 euros: the Xiaomi Mi Air Purifier *, which is also supposed to remove formaldehyde from the air thanks to a prefilter, activated carbon filter and HEPA filter.
A hint from Stiftung Warentest on what the filter is all about: "Formaldehyde [...] is gaseous and invisible, it can also irritate the mucous membranes and cause cancer.
Such volatile substances are not captured by paper fleeces, but by activated carbon filters. "
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Prowin air purifier: what can the device really do?
In view of the information provided by Stiftung Warentest, the Prowin air purifier without an activated carbon filter is unlikely to be able to keep its promise to filter formaldehyde from the ambient air.
The Pure Air Bowl 2 * can be a good alternative if you are primarily looking for an air freshener.
A fan wheel is driven by the motor of the device, which sucks in the room air and directs it to the Air Pure fragrance *.
Tip: One thing is crucial for all air purifiers: If a filter is available, it should be changed regularly and in accordance with the manufacturer's instructions.
Because the cleaning performance drops significantly with increasing use.
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