IONIZERS to not PURIFY indoor air. IONS are either NEGATIVE or POSITIVE. In this case, the NEGATIVE IONS are the 'GOOD GUYS!"
An ionizer will usually put some negative ions into the air while trapping, just like positive/negative magnets would do- SOME of your airborne live contaminates onto a metal plate inside the ionizer. When you pull out the plate with this smorgasborg of contaminates to wipe it, some of them can go airborne again, plus you have a dirty cloth ripe with contaminates on which you should then throw away. You haven't PURIFIED your air-you've just added some negative ions to your air, which will make your air feel light and lively- but still not PURIFIED.
Our SUN AIRE purifiers not only PURIFY indoor air SAFELY and EFFECTIVELY like SUNLIGHT, but one of the side-benefits is that we replenish your NEGATIVE ION balance in your air because of our SUNLIGHT process of purifying your air.
We DO NOT LIVE in our ductwork, therefore, our SUN AIRE purifiers purify your air in your living spaces FIRST and then the allotropic oxygen can be sucked through your ductwork.
POINT-OF-CONTACT is the key to our SUN AIRE purifiers effectiveness. We recommend you place your SUN AIRE purifier as FAR AWAY from your cold air return as possible because we want you to use the allotropic oxygen FIRST, before it's sucked through your ductwork.
Thanks for your question. Please let us know if we may assist you.