RGF® Air Purifiers do not use glass plates like other negative ion and ozone generators. As a result, they do not require maintenance, and do not produce nitrogen oxides like air cleaners that do use glass plates. nitrogen oxides can result in a "metallic" or "bleach-like" odor. These oxides can also serve as a minor lung irritant if occurring in high enough concentrations.

RGF® Air Purifiers, instead use a safe, control system to power a highly tuned ultraviolet lamp PHI-CELL. The energy emitted from the lamp, both induces and naturally limits the creation of ozone, generates purifying hydroxyls, negative ions, and a cold gas plasma.