Why air purifiers can make u sick

Even when striving for good indoor air quality, many of the products available on the market can be counterproductive and may even harm health, contrary to their claims.

This is not necessarily due to the products themselves, but because they create a false sense of security, causing us to overlook the most important aspect: ventilation.

Air purifiers draw in room air, filter out particles, and expel the cleaned air back into the space. They remove fine dust, bacteria, and viruses, but air pollutants like NO2 and CO2 remain in the breathing air.

Initially, one might feel better due to the air movement from the devices and the reduced fine dust, which gives a subjective feeling of fresher air. However, the dangers of NO2 and CO2 remain unchanged.

Air purifiers with UV-C disinfection can even increase NO2 and O3 levels. U.S. authorities, therefore, warn against such devices.

Fragrance plug-ins and scented products that mask the actual room odor prevent detecting bad air, leading to the mistaken belief that air quality has improved, despite the increased presence of pollutants. These products have no effect on NO2, CO2, and O3.

Moreover, these products tend to encourage keeping windows closed, relying on the devices to take care of everything. But there is no way to remove CO2 or NO2 from indoor air using conventional air purifiers. Nonetheless, nearly all such products are marketed with this claim. Notice that they specify filtration rates for fine dust, but not for CO2 and NO2?

The reason is simple: While air purifiers can significantly reduce fine dust (up to 99%), the reduction of gases is only a negligible percentage that offers no benefit. The amount is so small that manufacturers do not publish any data on it.

Even expensive industrial filters, costing upwards of $10,000, can only remove a small portion of pollutants from regular indoor air. And this is often done by transforming them into other substances, potentially replacing one pollutant with another.

So, what do these products actually contribute to indoor air quality at home? The answer is straightforward: Nothing!

The reason for their sale is clear: They create the illusion of fresh air and are easy to purchase and place in a room, without requiring any change in behavior or the need to investigate the cause of poor air or odors. These devices seem to take care of everything.

However, this can lead to illness – affecting everyone and lasting a lifetime.