The Bosch HVAC 7746900382 Ventilation Fan is a 120V replacement fan designed to provide dependable air movement within compatible Bosch HVAC equipment. It operates by using an electric motor to drive the fan, circulating air through the ventilation system to support proper airflow and equipment operation. This fan is commonly used in compatible Bosch boilers, ventilation systems, and ... https://www.partshnc.com/bosch-hvac-7746900382-ventilation-fan-120v