How do air purifiers work?

Air purifiers are very common in Asia as well as in European countries known for their commitment to protecting the environment: Luxembourg, Sweden, Norway... Let’s find out what air purifiers are and how they work?

Why do you need an air purifier?

An air purifier is an electrical device that filters the air in a home, office or industrial building, allowing occupants to breathe better. Up until recently, in the UK, only large companies which dealt with harmful products were equipped with air purifiers. While air purifiers are now becoming democratized, their efficiency has been recognized and relied upon for years.

Air purifiers nowadays are changing in size and in function to adapt to the residential market. Air purifiers are no longer limited to industrial or professional use and can filter all pollutants present in our indoor air.

Cleaning the air

Air purifiers are a crucial ally for everyone who is aware of the various sources of pollution in our indoor air: VOC, fine particles, harmful gases, pollens, dust mites, dust, viruses, fungi ... The list is long and scary, fortunately air purifiers can tackle all of them, or part of them depending on the model and filters used. The number of filters, their composition, and their respective function(s) make it possible to multiply the targets of an air purifier.

It can capture hundreds of different pollutants, filter them and even destroy them (in most cases) before reinjecting into the room a healthier, more breathable air. An air purifier can run continuously, like a VMC or a refrigerator, while maintaining an overall low energy consumption. The latest generation devices come with a sleep mode that allows them to consume less while being quieter.

Who are air purifiers for?

People allergic or sensitive to pet hair, dust, or pollen will notice an improvement in their daily lives thanks to air purifiers. They should be able to breathe better at home and leave hay fever, runny noses and itchy eyes behind.

Femme asthmatique

People with asthma or similar breathing difficulties will also find great help in air purifiers. By running them daily, they can breathe healthy air, free of pollutants, and should be able to significantly reduce their treatment (depending on what is medically advisable).

Finally, air purifiers are suitable for all who understand that the air we breathe has a significant impact on our present and future health. Breathe better to live better, and longer.

Deep dive into the operation of air purifiers

Air purifiers are not air conditioners, fans, or heaters. While some of the bigger brands are trying to combine these different functions into one device, they have currently not found market success.

Air purifiers are devices that suck in the air and reinject it in the room once purified. They can clean your air in a given time and for a given surface, depending on the model. AIRVIA Medical for example can treat the air of a 1000 ft² (100m²) area in just a few minutes.

Air that has been sucked in passes through different filters where it will undergo several physical treatments.

  1. Prefilters remove hairs, dust and larger pollutants from the air.
  2. Conventional filters then continue purifying the air by trapping dust, pollen and other particles floating in it. The most efficient purifiers can eliminate up to PM0.1, which corresponds to nanoparticles with a diameter of less than 0.1 micrometer.
  3. Processes such as photocatalysis, ionization or that use organic active substances are other means of purifying the air.

Each filtration step targets different pollutants. The more filtration and cleaning steps there are, the more likely the air purifier will be successful at completely cleaning the air of pollutants.

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