AirFree Onix 3000 Black Air Purifier. This is the Model 3000 and comes with a 2-Year Warranty. This non-ionic unit creates NO OZONE, an element that has been recently found to cause asthma attacks and even death is some circumstances. Ionic Air Purfiers such as the Sharper Image, Oreck, Purifion and Brookstone models can produce harmful levels of ozone in your home, not a problem with the OZONE FREE AirFree air purifier. Let us introduce you to Airfree the new and clean technology to reduce indoor pollution. Inside AirfreeâTMs patented ceramic core % of all micro-organisms: spores, fungus, bacteria, virus, mold spores, are incinerated at temperatures around 400F (250ºC). That is done without significant heat contribution to the ambient. No living microorganism survives this power. Airfree's new and awarded design includes the new outstanding and highly efficient thermo dynamic ceramic core, with high room capacity that goes up to 550 square feet. Airfree reduces Ozone whereas ozone generators generate dangerous levels of such harmful gas that destroys lung tissue, triggers respiratory diseases, and corrodes metallic equipment. Air sterilizer kills 99.99% of airborne molds, bacteria, & viruses, while neutralizing allergens Thermodynamic Sterilizing System uses only the power of heat to incinerate microorganisms Cooled, purified air is released (unit will have not effect on room temperature) No moving parts (silent operation) and no filters to change (saves time and money) Cleans up to 650 square feet