Recent reports question safety, effectiveness
of popular ionizers; Friedrich gets high marks
C-90A "recommended" In many of the same reports that
have questioned the safety of popular ionizers, the Friedrich C-90A
was listed as being effective and producing only minimal amounts of
ozone.
In standardized industry testing, the C-90A produced .014 parts per
million of ozone, well below the UL and FDA limit of .050 ppm.
