The Austin Air HealthMate® uses our originally designed filter that contains a blend of activated carbon and zeolite capable of absorbing chemicals, odors and gases as well as true medical grade HEPA (High Efficiency particulate air filter ). The HEPA in this  traps 99.97% of all particles down to 0.3 microns in size. Today this is still our most popular unit as it addresses the most general of indoor air quality concerns.  section at check out for extra savings we will credit your credit card after purchase