Air purifiers: what they are and how they work
I air purifiers o air purifiers they are portable devices which, thanks to the action of particular filters, are able to clean the air of the environment in which they are positioned from impurities. Even if it has never been scientifically proven that they are able to prevent respiratory diseases, they are useful for those suffering from this kind of pathology or ailment.
What types of particles and impurities can air purifiers filter out?
Several studies have ascertained that a good quality air purifier, such as the Dyson PureCool, is able to remove dust mites, pollen, mold and other allergens, as well as fine of smog and air pollution. According to some tests carried out by the site Altroconsumo.it in fact, it would appear that when used correctly, air purifiers contribute to reduce the symptoms of allergic rhinitis, especially in those who are allergic to so-called inhalants.
Clearly the performance of each device varies according to the model and the filters used. In any case, air purifiers have proven themselves less effective at absorbing other types of pollutants, first of all volatile organic compounds, chemicals – some potentially carcinogenic such as benzene , formaldehyde – originated from cigarette smoke, For the products house cleaning, paints of furniture and walls, scents for environment and "Fabrics of curtains and sofas.
If you want to learn more about the subject, you can register on the Altroconsumo.it website where, by becoming a member, you will have the opportunity to consult the results of the tests carried out on 7 robot vacuum cleaner models.
Coronavirus: Are air purifiers effective against Covid-19?
Technically, the filters of a quality air purifier are capable of capturing the particles of the SARS-CoV-2 virus, which have a diameter of approximately 0,125 microns, therefore much larger than those these devices are capable of capturing.
However, it has not been scientifically proven that air purifiers are able to prevent the spread of infectious agents such as the coronavirus and experts agree that it is more effective to keep the windows open for a few minutes several times a day
In any case, the filters they are equipped with are limited to retaining the virus, not eliminating it, so when changing the filter it is always good to pay attention and use the prevention measures we are used to (gloves and mask first of all).
Ionizers and ozone generators
Some air purifiers use a technology called ionization, able to block the proliferation of molds and bacteria but not to remove other polluting agents. Also, these devices can generate ozone, which even at low levels in a closed environment is harmful to the body.
Best brands of air purifiers: Dyson, Philips, Beghelli, Xiaomi, online offers
It is possible to buy air purifiers online on the stores of the main e-commerce and electronics stores, such as Amazon, eBay, ePrice, Mediaworld, Euronics e Unieuro. On Best Discounts you will find coupons and discount codes to buy air purifiers at even lower prices in each of these stores. Below you will find some models of various price ranges.
DYSON Pure Hot+Cool
Purifies, heats and refreshes the air in the entire room.
Equipped with three intelligent sensors and two special filters, it is able to detect and capture polluting particles and invisible gases, diffusing purified air into every corner of the room.
The device distributes a powerful and uniform flow of over 290 liters of purified air per second and can be controlled remotely via the Dyson Link app which provides real-time data on indoor and outdoor air quality, temperature, humidity and remaining life of the filter.
Philips 3000i Series Air Purifier
Clean, allergen-free air in minutes.
Detects and removes the three main indoor air threats in real time: particles, harmful gases and allergens. Air quality color coding makes it easy to identify the air conditions in your home on the top of the air purifier.
The special filter has 3 layers. The pre-filter captures dust and hair, the activated carbon filter removes harmful gases and unpleasant odors, the NanoProtect HEPA filter captures ultra-fine particles as small as 0,003 microns.
Beghelli SanificaAria 30 purifier
Air sanitizers with patented UV-OXY technology.
This range of professional UV-C ray sanitizers uses the patented uvOxy® technology and has a tested efficacy of up to 99,9% on viruses and bacteria, no ozone emissions and no exposure to UV-C sources.
A system of fans channels the air inside SanificaAria and, in contact with ultraviolet light, it comes out sanitized, avoiding harmful direct contact with ultraviolet rays and preventing the production of ozone.
Xiaomi Mi Air Purifier Pro air purifier
Ideal for medium-sized apartments.
Tested to eliminate 99.97% of particles in less than a quarter of an hour in rooms up to 72 square metres, at maximum power it emits a flow of 10.000 liters of clean air per minute.
Equipped with a standard filter capable of reducing PM 2.5 to almost zero and 2 other filters against bacteria and mites that can be purchased separately, this device can be managed remotely with the Xiaomi Mi Home app.
