Lennox 19U98 / 105984-01 Condenser Fan Motor is a genuine OEM ECM condenser fan motor designed to deliver precise airflow control and reliable outdoor unit performance in Lennox air conditioning and heat pump systems. Rated at 1/3 HP and operating on 208–230V single-phase power, this variable-speed motor is engineered to meet original factory specifications for efficiency, durability, and quiet operation.

This ECM motor features a variable speed range of 300 to 1200 RPM, allowing the system to adjust airflow dynamically based on operating conditions. This helps improve energy efficiency, reduce noise, and maintain proper condenser temperature, protecting critical components such as the compressor from overheating. The motor is built with ball bearings for long service life and consistent performance in demanding outdoor environments.

Lennox 105984-01 is designed with a 48-frame size, vertical mounting position, and stud-mount configuration for direct OEM replacement without modification. It includes a 1/2 inch by 3 inch shaft, CCWLE rotation, and is intended for condenser fan applications requiring dependable variable-speed operation. Ideal for replacing failed or inefficient motors, this OEM part ensures proper system operation, airflow balance, and long-term reliability.

Specifications
Brand: Lennox
Catalog Number: 19U98
Model / Part Number: 105984-01
Motor Type: ECM
Horsepower: 1/3 HP
Voltage: 208–230 VAC, 1 Phase, 60 Hz
Speed: Variable, 300–1200 RPM
Number of Speeds: Variable
Frame Size: 48
Rotation: CCWLE
Mounting Position: Vertical
Mounting Type: Stud
Shaft Size: 1/2 in x 3 in
Bearing Type: Ball
Gross Weight: 12 lb

Replacement History
Latest: 19U98 / 105984-01
Oldest: 105984-01