You might need a new cabin filter! Cabin Air Benefits A cabin air filter is an air purification filter, sometimes called a “micro cabin air filter” or “in-cabin microfilter,” designed to remove the microscopic dust, allergens, pollutants, and other particles that come into the passenger cabin of your vehicle through its air vents. In addition to making the air in the interior of your car unpleasant and unhealthy, a dirty cabin air filter, clogged with dirt, dust, smelly mold, and allergens, can also impact your defroster's performance heating, and AC. Need some help with your cabin filter? Our service advisors and technicians, at either of our Bret's Autoworks locations, Gardner and Olathe would be happy to help you!