Air purifiers have a formidable efficiency against pollens, mites, odors and particles thanks to different levels of filtration. Air purifiers frequently have a pre-filter to retain large dust and animal hair, a HEPA filter of medical quality against fine particles, a photocatalytic filter coupled with a retaining UV lamp and a charcoal filter against odors.
Therefore, are these devices necessary? There are many origins of indoor pollution and some particles are more dangerous than others. The smallest particles enter the body, lodge in the lungs and in the blood. As for other particles, such as pollen and allergens, they are not considered dangerous, but they still deserve to be filtered.
These devices are indeed able to get rid of your allergies to animal hair or dust. Some air purifiers also have an active oxygen option which disinfects the air in depth. Depending on the performance of your purifier it will treat different volumes of air associated with the size of your rooms (bedroom, living room, dining room, etc.).