Which HEPA Filters Are Washable?

I wrote an extensive review on the Best HEPA Filters.  It is important to note that there are some very important distinctions that need to be made before answering this question. 

  1. HEPA filters are not washable
  2. HEPA filters should not be used in your home’s standard HVAC unit without making professional modifications to it. 
  3. Most HEPA filters have a series of filters, not just one single HEPA filter

The reason, HEPA filters are removing extremely fine particles from the air. In fact, they need to be tested to remove at least 99.97% of all particles as small as .3 microns. (Chart below for your reference) 

MERV Rating3.0 - 10.0 Microns1.0 - 3.0 Microns0.3 - 1.0 Microns.3 MicronsIs It HEPA?
1-4less than 20%---No
620% - 49.9%---No
850% - 84.9%---No
1085% +50% - 64.9%--No
1290% +80% - 89.9%--No
14-90% +75% - 84%-No
16--75% +-No

If you are in the market for a HEPA filter and you have more questions than answers, please take a look at the blog post where I go through and exhaustive list if criteria and what to look for in a HEPA filter and review my top filters that you should look at before you make your purchase. 

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