Lennox 18K77 Motor

The Lennox 18K77 is a high-performance, 1/5 HP blower motor designed specifically for integration within established residential and light commercial HVAC systems. This direct drive blower motor operates at 208-230V and features a 3-speed configuration, providing flexible airflow management to meet precise load requirements. Engineered with a standard 1075 RPM rating and a 48Y frame, this PSC motor utilizes sleeve bearings for quiet, continuous-duty operation in air-over applications. As a genuine Lennox OEM replacement, it ensures an exact drop-in fit for several popular fan coil and air handler series, including the CB29M, CB30M, and CBX32M lines. This HVAC blower motor is thermally protected and requires a 7.5 MFD/370V capacitor (sold separately) to maintain optimal torque and electrical efficiency during startup and run cycles.

• OEM Compatibility: Precision-engineered for a seamless Lennox 18K77 cross reference with original equipment specifications, ensuring correct shaft alignment and mounting.
• Multi-Speed Versatility: The 3-speed lead configuration allows for customized air volume adjustments to optimize system static pressure.
• Quiet Operation: The sleeve bearing design reduces decibel levels and mechanical vibration, which is critical for indoor air handler installations.
• Durable Construction: Built for 208-230V single-phase environments with an open enclosure designed for efficient heat dissipation.

What is the correct replacement for Lennox 18K77?
This item is the direct OEM replacement. It is also cross-referenced with model number 161N16 and US Motors K55HXDRC-0005.

Which capacitor does this motor require?
To ensure proper operation and prevent premature winding failure, this motor necessitates a 7.5 MFD at 370 VAC run capacitor.

What are the physical dimensions of the motor?
The motor features a 1/2-inch diameter shaft with a length of approximately 3 inches, fitting standard torsion flex or belly band brackets.

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.