Since the coronavirus pandemic, interest in air purifiers capable of filtering bacteria and viruses from the air has increased significantly. It is a logical question: can an air purifier actually contribute to fewer pathogens in the air? We have summarized the facts, without making exaggerated claims.
How small are bacteria and viruses
Bacteria are generally between 0.3 and a few microns in size; viruses are often much smaller, sometimes only 0.02 to 0.3 microns. However, viruses rarely move through the air completely on their own; they are usually attached to larger droplets of saliva or moisture (aerosols) that are released when coughing, sneezing, or talking. These aerosols are often large enough to be captured by a HEPA filter.
What a HEPA13 filter does
A HEPA13 filter is tested and certified to capture at least 99.95% of particles down to 0.3 microns; this is the so-called Most Penetrating Particle Size, where filtration is most difficult. Particles that are larger or smaller are filtered with an even higher efficiency. This means that an air purifier with a HEPA13 filter can effectively filter the aerosols containing bacteria and viruses from the air according to the filter specification.
Important to emphasize: an air purifier is not a medical device and does not cure diseases, prevent infections, or replace hygiene measures such as hand washing and ventilation. The device filters the air that flows through it; therefore, it is a supplement to, not a replacement for, other measures.
What it does contribute to
- Reducing the overall concentration of particles and aerosols in an enclosed space.
- Supporting a healthier living environment in combination with proper ventilation.
- Additional peace of mind during periods of colds or flu in the family.
What to look out for
- Choose an air purifier with a HEPA13 filter; lower classes do not filter as finely.
- Pay attention to the CADR in relation to the room size; an undersized device in a large room will not work sufficiently.
- Let the device run continuously for the best results, especially in busy rooms such as the living room.
- Continue to ventilate; an air purifier does not replace fresh air from outside.
Our advice
For those looking for an air purifier that, according to the filter specification, filters bacteria, viruses, particulate matter, and pollen from the air, we recommend a device with a HEPA13 filter. The Dynter AirPure Plus PA244 is equipped with a HEPA13 filter that, according to the filter specification, captures 99.97% of particulate matter, pollen, bacteria, viruses, and microplastics, spread over a 4-stage filtration process. With a CADR of 260 m3/h and suitability for up to 55 m2, it is suitable for most living rooms and bedrooms.
Want to know more about the filter technology of the AirPure Plus PA244? View the product.