When it comes to air purification, the True HEPA filter is widely recognized as the most popular and effective filter. It is certified to remove 99.97% of all microscopic particles up to 0.3 microns in size, which is the smallest particle size that reaches the lungs. True HEPA filters are rated MERV 17 or higher, and are considered medical grade. Brands such as InvisiClean, Aviano, Medify, Airthereal, Honeywell, Winix, GermGuardian and Levoit make air purifiers labeled True HEPA.
Eureka also markets vacuum filters such as True HEPA. The Aviano claims to filter particles “as small as 0.03 microns”, but this may be a typo in its marketing materials. To be considered a true HEPA filter, it must meet the DOE standard closest to the DOE standard for a HEPA air filter. This is why it is important to understand the difference between different types of HEPA filters when looking for portable air purifier solutions for your facility. A HEPA filtration system is good for all allergens, including mold spores, pet dander, dust mites, pollen and fine dust. Examples of air purifiers with a True HEPA filter include the IQAir HEPA filter and the Oransi EJ air purifier. CADR stands for “clean air supply rate” and simply means how much air flows through the filter.
However, this number is not always reliable in real world use. Many brands of air purifiers claim to have a True HEPA filter but can only capture particles as small as 2 to 5 microns, which is a decrease of more than 600% in the efficiency of a True HEPA filter. Sanalife True HEPA portable air purifiers have multi-stage air cleaning power to provide the cleanest air possible. When it comes to improving indoor air quality, a true HEPA filter is the best choice for those with moderate to high allergies.