Are Air Purifiers with Ionizers Safe? - An Expert's Perspective

When it comes to air purification, it's important to understand the technology being used and how it works. Air ionization is a highly effective air purification method, but it can also release harmful substances, such as ozone, if not properly controlled. That's why it's important to choose an air ionizer that meets the necessary safety standards. Air ionization refers to the process of adding or removing charged particles, or ions, from the air.

These lose their electrical neutrality and are converted into negative or positive ions. Negative ions produced by air ionizers are beneficial and safe for our body, but they can also produce ozone if not properly controlled. Ionizers are very effective at removing particulate matter (PM) from the air and some particles from the surface. They are often marketed under a variety of names, such as “ionic air purifiers”, “negative ion air purifiers”, “air ionizers” and “bipolar needle-tip ionization”.

Ionized air purifiers are often marketed as a cheap way to increase CADR (metric that measures the effectiveness of an air purifier). However, they can still emit a large amount of ozone, especially compared to other standard appliances. That's why it's important to choose an air purifier with several stages of filtration that effectively eliminate viruses and pathogens and neutralize mold, gases, allergens, pet dander, and all kinds of particles. A summary of the scientific tests of air purifiers revealed that most air ionizers have no notable effect on particle levels.

Rest assured that the number of reactive oxygen species (including superoxide ion) was measured at 5 cm in an air purifier with a TEQOYA ionizer, according to a protocol developed by the CERTAM laboratory with INSERM to measure the oxidizing potential of polluted air.

Nancy Pickell
Nancy Pickell

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