| ▲ | schiffern a day ago | |
HEPA H13 only means the filter was tested to 99.97% particle efficiency at the most difficult particle size. There's nothing magical about this number. In reality air filters can often clean better with an E11 or E12 filter (tested to 95% and 99.5% respectively), because these filters allow much greater airflow from the same fan.[0] Remember, the clean air is immediately mixing with the dirty room air. If you get twice the airflow while "only" letting 5% of particles through, that's a good tradeoff. CADR (tested by AHAM, not just the manufacturer's claim!) is what really matters, not HEPA vs non-HEPA. | ||