Trane MOT18733 Motor

The Trane MOT18733 Condenser Fan Motor is a critical OEM replacement motor designed for high-static pressure applications in residential and light commercial condensing units. This 1/8 HP HVAC motor operates at 200-230V and maintains a consistent 1550 RPM, ensuring proper heat dissipation across the condenser coils. Built on a 42 frame chassis, it features a totally enclosed air over (TEAO) design to protect internal windings from environmental debris and moisture. As the direct replacement for MOT3438, it eliminates the need for bracket modifications or shaft adjustments during field installation. For technicians troubleshooting airflow issues or bearing failure, the MOT18733 provides the exact torque profile and electrical specifications required to maintain the system's original SEER rating and operational thermal limits.

• Part Number: MOT18733 (Replaces MOT3438)
• Horsepower: 1/8 HP
• Voltage: 200-230V Single Phase
• Speed: 1550 RPM
• Frame Size: 42 Frame
• Enclosure: TEAO (Totally Enclosed Air Over)

Is this a universal motor or a genuine Trane part?
This is a genuine Trane OEM part, ensuring the electrical leads, capacitor requirements, and mounting bolt patterns match the factory cabinet specifications exactly.

Which capacitor should be used with the MOT18733?
Verify the microfarad (MFD) rating on the motor nameplate; most 1/8 HP 42-frame motors in this class require a 5 MFD or 7.5 MFD / 370V capacitor. It is standard trade practice to replace the run capacitor whenever installing a new condenser fan motor.

Will this motor replace the older MOT3438?
Yes, the Trane MOT18733 is the official superseding part for the MOT3438, maintaining identical physical dimensions and performance curves.

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.