Technology That Makes Airpura Your Best Choice Vacuumable pre-filter Vacuum through the mesh and replace every 12 months 2 Micro-Suppress filters Suppress bacteria and viruses around the carbon bed Carbon filter Absorbs airborne chemicals noxious gases and odors True HEPA filter Traps 99.97% of particles as small as 0.3 microns Felt Gaskets Seal the filter chamber: No off gassing from rubber seals Unimpeded airflow The air flows directly from the filters to the exterior for lower air turbulance and less noise Motor and electric parts out of the airflow Other systems blow clean air over the motor and recontaminate it One piece motor / fan assembly Eliminates vibration problems where separate fan is attached to a shaft with a set screw. Compact motor / fan design allows more space for filtration Unique pressure seal The pressure seal system on the filter chamber ensures that all the impurities pass through the filters. Other systems allow dirty air to escape and fail to acheive their promised HEPA rating of 99.97% filtration Powdercoat steel mesh housing No plastic vapors, with a modern attractive appearance, suitable for any decor. Variable speed control Allows user to set unit at optimum CFM for their situation UV Germicidal Lamp in the UV600 20 watt UV lamp 30,000 um per sec squared sterilizes micro-organisms antigens, pathogens and mold spores Lamp situated in filter chamber Kills organisms as they are trapped by the filters. Other UV machines place the UV lamp in the air flow away from the filters. Microbes can escape back into the air. Specification Sheets For Airpura Filters: (Requires PDF Reader) AirPura R-600 Spec Sheet - All Purpose Unit AirPura UV-600 Spec Sheet - Microorganisms with UV bacteria killing light AirPura V-600 Spec Sheet - VOCs AirPura C-600 Spec Sheet - Airborne Chemicals AirPura H-600 Spec Sheet - Allergies & Asthmas AirPura I-600 Spec Sheet - Healthcare AirPura T-600 Spec Sheet - Tobacco & Tobacco smoke