Abstract: Methods of reprocessing and assembly of a filter assembly for a smoke evacuation unit. Reprocessing includes accessing a filter chamber of the housing. Filter media is removed from the filter chamber by severing the filter media or an adhesive bond that joins the filter media. A replacement filter media provided, and disposed within the filter chamber to provide a sealed fluid pathway through the replacement filter media. The machined housing may provide a bonding surface, and the replacement filter media may be bonded to the bonding surface. The replacement filter media may be a cartridge including a cartridge housing, and the replacement filter media disposed therein. The step of accessing the filter chamber may include severing a rear side of the housing about a suction outlet, severing rear and front portions of the housing, and/or decoupling a cover from a front of the housing.