Range Hood Vent/Heater Fan Motor For: Nutone SM553-SU C66582 66582000 ERSM553-SU

ERP SM553-SU Range Hood Vent/Heater Fan Motor

This ERP replacement motor is intended for compatible Nutone vent, heater, and fan applications. It can restore airflow or fan operation when the original motor is worn, electrically open, noisy, intermittently operating, or otherwise confirmed defective. Match the complete appliance model, original motor, shaft, rotation, mounting, wiring, and electrical specifications before ordering.

Compatible Part Numbers

• SM553-SU
• C66582
• 66582000
• ERSM553-SU

Key Features and Specifications

• Application reference: Nutone.
• Single-speed motor.
• Rated speed: 3000 RPM.
• Shaft diameter: 7/32 inch, flat.
• Shaft length: 1 inch.
• Rotation: CCW when viewed from the shaft end.
• Leads: 9 inches with eyelet connection.
• C-frame design.
• CSA approved as specified for the source part.
• Designed for compatible bathroom exhaust fan and vent/heater applications.

Fixes These Symptoms

• Vent or fan does not run.
• Fan runs intermittently or stops under normal operation.
• Motor is noisy, slow, or unable to maintain airflow.
• Fan rotation or airflow is incorrect after the motor and wiring are confirmed.
• Visible motor damage or an electrically open winding.

These symptoms may also be caused by switches, controls, wiring, blocked ducts, bearings, obstructions, or other appliance components. Diagnose the appliance before replacing the motor.

Compatible Models

Fits various models. Please verify compatibility with us before ordering. The Nutone brand reference does not guarantee fitment to every model.

Compatible Brands

Nutone.

Installation Guidance

1. Disconnect electrical power before service and verify the circuit is de-energized.
2. Record the original motor wiring, terminal or eyelet positions, shaft orientation, rotation, mounting, and any spacers or hardware before removal.
3. Confirm the replacement voltage, shaft dimensions, rotation, lead length, mounting arrangement, and appliance model against the original and the model-specific service documentation.
4. Clear the fan wheel and housing of obstructions, and replace damaged guards or insulation before testing.
5. Route wiring away from moving or hot components and secure all connections as specified by the service instructions.
6. Reinstall covers and guards before restoring power. Test the fan for correct rotation, airflow, noise, and safe operation.
7. Use a qualified technician when electrical wiring, appliance access, or compatibility is uncertain.

ERP replacement part. Confirm the full appliance model and original part number before ordering.