Troubleshooting How to clean my bagged Philips vacuum's outlet filter Only a washable EPA/HEPA filter can be cleaned, all other filters need to be replaced. Note: The exhaust filter is placed on top or on the back of the vacuum cleaner. As different types of exhaust filters are available, check which filter has been placed inside your appliance. Washable HEPA filter To identify if a washable filter has been placed, the word washable is written on the filter frame. Clean the washable EPA/HEPA filter every 6 months. The washable EPA/HEPA filter can be cleaned 4 times. After 4 times, the filter has to be replaced. Note: Cleaning does not restore the original colour of the filter, but does restore its filtration power. Rinse the EPA/HEPA filter under a warm tap. Never clean the EPA/HEPA filter with a brush. Carefully shake the water from the surface of the EPA/HEPA filter. Let the EPA/HEPA filter dry completely before you place it back into the appliance. Non-washable HEPA filter This filter cannot be cleaned. Replace the non-washable EPA/HEPA filter every 2 years. AFS filter This filter cannot be cleaned. Replace the AFS filter once a year. Micro filter This filter cannot be cleaned. Replace the Micro filter once a year.