Inducer Motor Replaces Model Numbers: HC21ZE114 HC21ZE114A. Specifications: 318984-753 Inducer Motor Volts: 115V, Horsepower: 1/25 hp, 1.8A, 60Hz, 25MHP, 3300RPM, Cont. Duty Thermally Protected, Class B. LA11AA005 Draft Inducer Blower Wheel: CW Closed End, Steel Wheel. Inducer Motor Function: This 318984-753 inducer motor kit is designed to expel the exhaust gas from the furnace. Older inefficient furnaces allowed the flue gas to escape the unit with virtually no resistance. Newer high efficient furnace heat exchangers are so restrictive that the flue gases cannot exit the furnace though natural draft. Therefore, the inducer is required to pull the flue gases through the heat exchanger. The inducer motor is usually the first thing that starts up when your furnace calls for heat.