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HBA74S421E/45
3VS774IA/D3 BALAY
HBG517ES1R/78
Power: approximately 30 W
ventilador caldera saunier duval 10736 botella-desechable HBA74S421E/45Extractor fan with tachometer designed for Saunier Duval boilers, specifically for models in the Themafast F25 E series. This replacement part is essential to ensure the proper evacuation of combustion gases and maintain safe and efficient boiler operation. It works by controlling the extraction speed through a built in tachometer that adjusts the airflow according to the system's needs. What problem does this replacement solve? Boiler with poor gas
