What is a HEPA filter?

HEPA stands for “High Efficiency Particulate Air Filter”. This is a filtration classification in accordance with EN 1822, which comes from the air filtration sector (rooms/breathing masks) and cannot be compared with the criteria that apply to the filtration of vacuumed dusts by industrial vacuum cleaners in accordance with IEC 60335-2-69, where far higher requirements are made regarding the filters, e.g. regarding air speed, pressure difference and mechanical strain. However, in other countries or markets, and particularly for household vacuum cleaners, HEPA is widely used. Putting it simply, one can say that an H14 HEPA filter corresponds to an H filter with regards to dust retention capacity (99.995%) in accordance with IEC 60335-2-69.