Lennox 21L91 Blower Motor 1/4 HP 4-Speed 115V 1075 RPM

The Lennox 21L91 is a genuine OEM replacement blower motor designed for use in Lennox residential furnace and air handler systems. This direct drive motor features 1/4 horsepower output and operates on standard 115-volt household current, making it an ideal replacement component for various Lennox heating and cooling units.

Key Specifications:

• Horsepower: 1/4 HP
• Voltage: 115V, 60 Hz, single phase
• Speed: 1075 RPM with 4-speed capability
• Rotation: Counterclockwise (CCW)
• Amperage: 3.4 amps
• Frame: 48Y standard motor frame
• Shaft: 1/2 inch diameter, 3.25 inch length
• Mounting: Tri-mount configuration for versatile installation

Compatibility and Applications:

This motor is compatible with most Lennox F8AUH, G20, G24M, G27M, and 80MGF series furnaces and air handlers. It replaces part numbers 21L91, 21L9101, 97H57, and 97H5701. The motor is manufactured by US Motors (Model K55HXGAM-8052) to Lennox specifications and includes installation instructions.

Installation Note:

When replacing a blower motor, always inspect the blower wheel for damage or imbalance, as worn or unbalanced wheels can cause premature motor failure due to excessive vibration.