Keeps On Ticking....
This is one long-lasting unit!  It has taken on some small room issues - VOCs, other odors - and puts out a very, very insignificant green light.  I've used it in powder rooms and, most recently, a college student's bedroom that has accumulated dirty laundry.  Very pleased with this purchase and am about to buy another one.<br /><br />I've tried several negative-ion generators, some with / without fans, some ozone generators, etc., for several years and have found that those with filters/fans tend to die after a few years of constant use, even with filter maintenance.  The fans of these units (not the GermGuardian) tend to finally die.  The smaller ozone generators are wonderful, but I've found that some of the brands are all but impossible to clean and, thusly, lose their effectiveness after a year or so.  (The one of these small units I'm still crazy about isn't being sold by Amazon at this time.  :( )
Rating: 5 stars