What is the difference between a “HEPA-type” filter and a HEPA filter?
• The difference is huge. According to the American Lung Association, the efficiency of HEPA-type filters “may be 55% or less at 0.3 microns,” which means that at least 4,500 out of 10,000 0.3 micron particles will pass through. The true medical grade HEPA (High Efficiency Particulate Air) filters, like those used in the CAP600 & CAP1200 models, are certified to a minimum efficiency of 99.97% at 0.3 microns. This means that 3 or fewer particles out of 10,000 will pass through–about 1,500 times less leakage.
