The Filter Clean / Change Alarm Light is a genuine replacement indicator for the XPOWER X-3400 (and compatible) air scrubber units, designed to alert operators when the HEPA filter reaches a point of restricted airflow. Built into the scrubber’s internal pressure-monitoring system, this LED light illuminates when the air pressure drop exceeds a threshold -signaling that the filters are saturated and need cleaning or replacement. According to the XPOWER manual, on-board pressure sensors trigger the filter change light when “insufficient air passes through the HEPA filter.” Replacing this warning light ensures that your scrubber can continue to provide optimal performance, maintain airflow efficiency, and prevent potential damage or reduced filtration efficiency. Ideal for restoration teams, health-care facilities, and commercial air-quality professionals, this component helps keep your air scrubber functioning safely and reliably.