Lennox 19Y99 Motor

The Lennox 19Y99 is a heavy-duty, 575V 1-phase condenser fan motor engineered for high-demand commercial HVAC applications. Operating at 1075 RPM with a 1/3 HP rating, this PSC (Permanent Split Capacitor) motor provides the reliable torque necessary for maintaining optimal head pressure in 575V systems. As a direct replacement for Lennox 79J83, it utilizes a standard 48 frame size and feature a 1/2-inch diameter shaft with a 3.4-inch length, ensuring a seamless fit for technicians performing field changeouts. The CCWLE rotation (Counter-Clockwise Lead End) is specifically designed to match the factory airflow requirements of compatible Lennox condensing units.

For a successful installation, verify that your existing system matches the 575V 60Hz power profile, as this motor is built for the higher voltage requirements often found in industrial or Canadian electrical grids. This 1-speed motor features a 1.0A full load amp rating and high-grade ball bearings for extended mechanical life in vertical mounting positions. When replacing the Lennox 19Y99 motor, ensure you also inspect the 10 MFD 370 VAC capacitor for peak performance.

• Direct OEM Swap: Drop-in replacement for 79J83 and 104607-03, eliminating the need for mounting modifications or bracket adjustments.
• High-Voltage Precision: Purpose-built for 575V 1-phase service, providing stable 1075 RPM performance under high ambient temperatures.
• Industrial Durability: Equipped with ball bearings and a TEAO (Totally Enclosed Air Over) design to resist moisture and debris entry in outdoor environments.
• Standardized Specs: Features a universal 48 frame and 1/2" shaft for compatibility with standard Lennox fan blade hubs.

Is the Lennox 19Y99 compatible with 230V or 460V systems?
No, this motor is strictly rated for 575V single-phase power. Applying 230V or 460V will result in immediate failure or improper operation.

Which way does this motor rotate?
The rotation is CCWLE (Counter-Clockwise Lead End), which is the standard for many Lennox condenser fan configurations.

Do I need to replace the capacitor when installing this motor?
Yes, it is standard trade practice to replace the 10 MFD 370V capacitor during a motor changeout to ensure the starting winding operates within specifications.

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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.