Trane MOT18959 Motor

The Trane MOT18959 Motor is a high-performance 3/4 HP blower motor engineered for single-phase HVAC systems. Operating at 200-230V with a 1080 RPM rating, this 48Y frame motor is built for continuous-duty air-over applications. As the direct replacement for MOT4586 and MOT12418, it maintains OEM-certified clearance and torque specifications, ensuring a seamless fit in Trane residential air handlers and light commercial units. This 115/230V compatible motor (verified at 200-230V range) utilizes a 2-speed 1075/1080 RPM configuration for precise airflow control and features an Open Air Over (OAO) enclosure to maximize thermal dissipation during peak cycles. A natural evolution from the MOT4586 motor, it integrates a 0.5-inch shaft and supports dual-rotation (CW/CCW) to accommodate various blower wheel configurations. For field technicians, this is the standard for restoring factory-spec static pressure and system efficiency.

• Direct OEM Replacement: Replaces obsolete part numbers MOT4586, MOT12418, and MOT6794 without modifications.
• High-Efficiency Performance: 3/4 HP motor balanced for 1080 RPM to maintain optimal airflow across evaporator coils.
• Thermal Protection: Internal overload protection prevents winding failure during voltage fluctuations or high-head pressure events.
• Universal Compatibility: Standard NEMA 48 frame with belly-band mounting capability for versatile housing fits.
• Multi-Speed Flexibility: 2-speed motor configuration allows for customized CFM settings based on specific ductwork requirements.

Common Questions

Does this motor require a new run capacitor?
Yes, the Trane MOT18959 typically requires a 20 MFD / 370VAC run capacitor. Always verify the capacitor rating on the motor nameplate during installation to prevent premature motor failure.

Can I use this to replace a 1075 RPM motor?
Yes. In the field, 1080 RPM and 1075 RPM are used interchangeably for blower applications, as the nominal speed of single-phase 6-pole motors falls within this operational range.

Is the rotation reversible?
This Trane MOT18959 Motor supports reversible rotation (CW/CCW), making it adaptable to both left-hand and right-hand blower housing discharges.

This item is not eligible for free shipping.

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.