Lennox 12U70 Variable Speed ECM Condenser Fan Motor 1/3 HP 208-230V

The Lennox 12U70 is a high-performance variable speed ECM (Electronically Commutated Motor) condenser fan motor designed for residential and light commercial HVAC applications. This genuine OEM replacement motor delivers 1/3 horsepower and operates on 208-230 volt single-phase power, making it compatible with a wide range of Lennox air conditioning units, heat pumps, and refrigeration systems.

Key Features:

• Variable speed operation from 300 to 1200 RPM for optimal efficiency and performance
• ECM technology provides superior energy efficiency compared to standard PSC motors
• Rugged cast-iron frame construction for durability and longevity
• Ball bearing design ensures smooth, reliable operation
• 48 frame size with vertical stud-type mounting configuration
• 1/2 inch diameter shaft with 2.17 inch length
• Counterclockwise rotation when viewed from lead end (CCWLE)
• 60 Hz frequency, single-phase operation

This motor is engineered specifically for condenser fan applications in outdoor HVAC units, where it provides consistent airflow while adapting speed to match cooling demands. The variable speed capability helps reduce energy consumption and extends system life by minimizing cycling and reducing stress on components. Also known by manufacturer part number 103687-02, this motor is built to OEM specifications for guaranteed fit and performance in Lennox equipment.