The answer to 'why is my steam cleaner filthy' is that steam cleaners can accumulate dirt, debris, and mineral buildup over time if not properly maintained. This can lead to the machine becoming dirty and less effective at cleaning.
Some common causes of a dirty steam cleaner include not emptying the water tank after each use, not cleaning the filters and brushes regularly, and using hard water that leaves mineral deposits. Symptoms of a dirty steam cleaner include reduced suction power, water leaks, and poor cleaning performance.