Carrier HC21ZE118 Combustion Inducer Motor

When you are dealing with a 2-stage furnace that is failing to prove the pressure switch, the Carrier HC21ZE118 Combustion Inducer Motor is the definitive OEM solution for restoring proper draft. This two-speed draft inducer is manufactured by Jakel (Part # J238-150-15315) and is engineered specifically for Carrier, Bryant, and Payne mid-efficiency and high-efficiency units. Operating at 115V and 60Hz, this motor features a shaded pole design with ball bearings for extended service life compared to sleeve-bearing alternatives. With a high-speed rating of 2800 RPM (25 mHP, 2.0 FLA) and a low-speed rating of 2500 RPM (11 mHP, 0.61 FLA), it provides the precise static pressure required to clear the heat exchanger of combustion byproducts. This genuine Carrier replacement part replaces older part numbers including HC21ZE116 and HC21ZE118-B. It features a double-sided flat shaft (1/4 inch diameter) and thermal protection to prevent winding failure during high-static conditions, ensuring a drop-in fit for complex HVAC venter motor assemblies without requiring field modifications.

Key Benefits

• Precise 2-Speed CFM Output: Matches the factory-spec airflow for both low-fire and high-fire cycles, preventing pressure switch lockout.
• OEM Compatibility: Exact replacement for Jakel J238-150-15315, ensuring the harness, mounting holes, and shaft alignment are identical to the factory unit.
• Robust Construction: Equipped with ball bearings and Class B insulation to withstand the high ambient temperatures of a combustion compartment.
• Internal Thermal Protection: Automatically cuts power to the windings if the motor exceeds safe operating temperatures, protecting the furnace control board from amp spikes.

Common Questions

Can I use a single-speed inducer to replace the HC21ZE118?
No. This is a two-speed motor designed for 2-stage furnaces. Using a single-speed motor will lead to control board errors, as the system monitors the high/low speed inducer signals to verify proper venting before ignition.

Does this unit include the inducer wheel or gasket?
This SKU is the motor only. When performing an inducer motor replacement, it is highly recommended to inspect the internal blower wheel (impeller) for cracks and always install a new fiberglass or silicone gasket to maintain a gas-tight seal.

Why is my new inducer motor making a humming noise but not spinning?
If the motor has the correct 115V supply but won't turn, verify the shaft is not seized. In many cases, a failed run capacitor (if equipped on the assembly) or a restricted secondary heat exchanger can cause the motor to struggle. Ensure the vent pipe is clear of obstructions.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.