For a filter to be certified high-efficiency particulate air (HEPA), it must be tested and proven to filter particles as small as 0.3 microns to 99.97 percent efficiency at its designed air flow. To ...

From the size of your room to HEPA filter you need to look at certain factors before buying an air purifier Our expert shares ...

HEPA filters are designed to capture at least 99.97% of airborne particles measuring 0.3 microns in diameter, which include pollutants such as dust, pollen, mold spores, and bacteria. “The ...

During flight, cabin air is constantly renewed. As fresh air enters the cabin from outside, the same quantity of used air from the cabin is expelled overboard. Credit: AIRBUS According to IATA, the ...

High-Efficiency Particulate Air (HEPA) filters can trap dust, pet dander, mold spores and many other airborne particles responsible for triggering respiratory allergies and asthma attacks. In fact, ...

A simple rule: Room size (in sq ft) × 2 = Recommended CADR. For a 150 sq ft bedroom, aim for a purifier with around 300 CADR.