FAQ Search Select a Category BarkBath Cleaning Formulas Cleaning Tips Commercial Products Corporate Deep Cleaners Hard Floor Cleaners Mops, Brooms and Brushes Parts and Accessories Steam Sweepers Vacuums Warranty Web Site and/or go Pet Hair Eraser Clearing Clogged Filters Answer: Clogged Filters Check the Pre- and Post-Motor Filters for Debris. Check behind Pre-Motor filter tray (found below the dirt container). All debris must be removed Check the left hose opening and right tube opening where they connect to the back of the machine for debris. Check the upper tank cyclone for build up or clogs. Remove the inner cyclone, wash and replace when completely dry. Related Questions Why is my vacuum sounding loud? What should I check? Where can I get a replacement brush and brush belt for my BISSELL Go Vac? Why doesn't the power cord rewind fully on my Pet Hair Eraser® or Opticlean® Cyclonic Vacuum? My Powergroom® Pet Canister Vacuum power cord does not rewind fully. What should I do?