The NAVIEN 30000405A Fan Motor is a replacement motor designed for compatible Navien boilers and tankless water heater HVAC systems. It powers the fan assembly to circulate combustion air and support proper venting, ensuring efficient combustion and safe system operation. By maintaining consistent airflow, the motor helps optimize heating performance and reliable ignition. Engineered ... https://www.partshnc.com/30000405a-navien-tankless-water-heaters-navien-fan-motor