What is an air purifier used for?
This purification product is used to eliminate pollution inside the house. If there is no recommendation for a very specific use of the air purifier, it is possible to use it in every room of the house for a comfortable use in order to breathe a “healthier” air and eliminate bacteria and even some odors (thanks to the carbon filter). It can also be beneficial if you have health problems (asthma, pollen allergy, illnesses, etc.) for more regular use.
The air purifier also acts as a fan, and some models which benefit from more advanced technology such as https://www.lesnumeriques.com/purifier-air/dyson-pure-hot-cool-p34909/test.html has a heating function.
If it is complicated to make a choice among all the models offered, it can however be done according to the desired filtration efficiency, the low noise level or even the design of the device.
How does an air purifier work?
An air purifier has a filtration system that is made up of several levels of filters: a pre-filter that eliminates hair or animal hair, i.e. the coarsest dust, an activated carbon filter that goes meanwhile, remove the odors of cigarettes or candles, but also a HEPA filter which aims to remove the finest particles, down to 0.3 micrometers (for Rowenta or Philips devices) see 0, 1 for certain filtration systems, such as those from Dyson for example.
Depending on the power offered, the device can purify a more or less important surface. A small purifier of the Dyson Pure Cool Me type, for example, cannot cover a large area and it will only be effective if it is placed close to the user.
Can an air purifier kill viruses?
The HEPA filter removes very small particles invisible to the naked eye, but is not equipped to absorb viruses which are generally finer than 0.3 microns. As a result, the virus will pass through the filter. In contrast, bacteria are more regularly absorbed by the HEPA filter.
What is the automatic mode used for on certain models of purifiers?
The automatic mode allows the device to activate as soon as it notices that the room is too polluted. Thanks to a sensor, the purifier is able to know the level of pollutants in the room and to modify the speed accordingly. Not all purifiers offer automatic mode and this technology is found mainly on quality or high-end models.
Can Air Purifiers Be Quiet?
In general, the sound level of an air purifier does not exceed 60 dB (A) when it is at maximum power. On the other hand, it can be very quiet when it is in the weakest mode. Some purifiers even offer a “night” mode, which is supposed to not disturb the user in their sleep.