Lennox 34K77 Motor

The Lennox 34K77 Blower Motor is a high-duty PSC (Permanent Split Capacitor) motor engineered for precision airflow in residential and light commercial HVAC systems. This 1/3 HP blower motor serves as the direct OEM replacement for K55HXEFP-7290 and 34K7701, ensuring a drop-in fit with Lennox, Armstrong, and Ducane air handlers. Operating on a 208-230V single-phase power supply at 825 RPM, this motor utilizes a 3-speed configuration to allow for specific CFM adjustments based on system static pressure and seasonal load requirements.

Constructed with a NEMA 48 frame and sleeve bearings, the 34K77 is designed for horizontal mounting and features a CCWLE (Counter-Clockwise Lead End) rotation. The 1/2" x 2.5" shaft and hub ring mounting system streamline the installation process for technicians. To maintain electrical efficiency and prevent winding overheating, this motor requires a 20 MFD 370V capacitor. Integrating this Lennox replacement motor ensures your blower assembly regains its factory-rated performance and quiet operation.

Key Benefits:

• Direct OEM Compatibility: Specifically engineered to replace Lennox 34K7701 and K55HXEFP-7290 without bracket modifications.
• Multi-Speed Versatility: The 3-speed motor design provides flexible airflow control for heating and cooling stages.
• Professional Grade Durability: Features 48-frame construction and sleeve bearings for consistent, low-vibration performance.
• Optimized Efficiency: The 825 RPM rating at 2.4 Amps balances high torque with lower energy consumption.

Common Questions:

What is the rotation of the Lennox 34K77?
This motor is rated for CCWLE (Counter-Clockwise Lead End) rotation. Always verify the lead end orientation of your existing blower wheel before installation.

Does this motor include the capacitor?
Standard replacement motors typically do not include the run capacitor. This unit requires a 20 MFD / 370V capacitor for proper startup and torque.

Is this a direct replacement for Allied Air and Armstrong units?
Yes, the 34K77 is a universal replacement across several Lennox International brands, including Allied, Armstrong, Concord, and Ducane, provided the specifications align with the original data plate.

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.