FAQ Search Select a Category Cleaning Formulas Cleaning Tips Corporate Deep Cleaners FAQ Hard Floor Cleaners Parts and Accessories Steam Sweepers Vacuums Warranty Web Site and/or go Why is my filter indicator always green when the filters are dirty? Answer: -Check to ensure there is a upper tank filter installed in your vacuum. -Also, the new design of the upper tank filter is larger, which can cause a gap. The indicator may stay green because of this. This is the correct filter for your machine.