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replacing the full S32421 Inducer Assembly is recommended to ensure the blower wheel and capacitor are also refreshed
The three-pole configuration allows for complete circuit isolation
Featuring a DIN 43650 Form A connection
The corrosion-resistant alloy construction stands up to rigorous industrial environments
Aprilaire 4640 Scale Control Insert 326058-756 replacing the full S32421 InducerMaintaining your whole home humidification system requires precision engineered components like the Aprilaire 4640 Scale Control Insert. This genuine Aprilaire replacement part is specifically designed to encase the humidifier water panel, serving as a structural U shaped insert that guides water flow and manages mineral accumulation. Constructed from durable, heat resistant polypropylene, the 4640 insert effectively captures heavy scale buildup and