Lennox 21H61 Motor

The Lennox 21H61 Condenser Fan Motor is a high-performance, 575V 1075RPM replacement motor engineered specifically for industrial and commercial HVAC systems. This 1/3 HP PSC motor (Permanent Split Capacitor) is designed for a 1-phase, 60Hz power supply and operates with a CCWLE rotation (Counter-Clockwise Lead End). Built under the 48-frame specification (48 Fr), it features a 1/2-inch by 3.4-inch shaft, providing a direct drop-in fit for numerous Lennox rooftop units and split systems. Professional HVAC technicians rely on the Lennox 21H61 to maintain factory-grade airflow and thermal efficiency. Utilizing ball bearings for extended service life in high-ambient environments, this unit is optimized for vertical mounting positions using a belly band. To ensure peak performance and to prevent premature failure, it is recommended to replace the 10 MFD 370 VAC capacitor during installation.

Key Benefits:

• OEM Compatibility: Direct replacement for Lennox part numbers 104607-04, 104607-03, and 79J83, ensuring no field modifications are necessary.
• Industrial Voltage: Rated for 575V applications, making it ideal for standard commercial 3-phase building power configurations.
• High-Speed Airflow: The 1075 RPM fixed speed ensures consistent static pressure across the condenser coils for optimal heat rejection.
• Rugged Construction: Features all-angle ball bearings that handle the mechanical stress of vertical exhaust configurations.
• Precise Specifications: Includes 1/3 HP output with a low 0.9A draw, maintaining the electrical integrity of the system's control board.

Common Questions:

• What units does the Lennox 21H61 fit? This motor is commonly found in Lennox KCA072S4 and KCB072H4 series units, among other commercial rooftop configurations.
• Is the capacitor included with this motor? No, the 10 MFD 370 VAC capacitor is sold separately. Technicians should always replace the capacitor when installing a new motor to avoid issues with starting torque or overheating.
• Can I use this as a substitute for a 1/4 HP or 1/2 HP motor? It is critical to match the horsepower, voltage (575V), and RPM (1075) exactly. Using a motor with incorrect specs can lead to fan blade imbalance or electrical failure of the contactor.

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.