Most vacuum cleaners today have filters to protect the air from harmful particles making their way back into the air while vacuuming. The HEPA (High Efficiency Particulate Air) filters have a life of 6-12 month. If you wait to change your filter it clogs reducing air flow and performance and can shorten the life expectancy of your motor. Call or come by before it becomes an issue. We carry a wide verity of filters for different brands. If you don’t see it on the shelf ask if we can order one for you.