@TallGuyJohninBKK It is true what you say about HEPA. Please go to their website where you can find the CMU testing report.
In the report the averaged efficiency of the HEPA filter comes to 99.86%, this is still not 99.97%, although this is a good number which has been found by testing, therefore it can be seen that it is not just some marketing number but actual test results.
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@TallGuyJohninBKK It is true what you say about HEPA. Please go to their website where you can find the CMU testing report.
In the report the averaged efficiency of the HEPA filter comes to 99.86%, this is still not 99.97%, although this is a good number which has been found by testing, therefore it can be seen that it is not just some marketing number but actual test results.