Lennox 10W78 Fan Assembly

The Lennox 10W78 Fan Assembly is a critical OEM replacement component designed for high-efficiency condenser fan blade performance in residential and light commercial HVAC units. This 22-inch 4-blade fan assembly features a 1/2-inch bore and is precision-balanced to ensure smooth operation, reducing mechanical stress on the fan motor and increasing overall system longevity. Engineered with a 24-degree pitch and a counter-clockwise (CCW) rotation facing discharge, the 10W78 is a direct replacement for many popular Lennox 12ACB and XP series models. The assembly utilizes a riveted steel spider construction for maximum structural rigidity under high static pressure, ensuring consistent CFM delivery across the coil. As a genuine Lennox HVAC part, this condenser fan assembly meets strict factory tolerances for aerodynamics and vibration dampening, effectively maintaining the refrigeration cycle's efficiency even during peak load conditions.

• Optimized Airflow: The 24-degree blade pitch is engineered to maximize heat transfer across the condenser coils.
• Heavy-Duty Construction: Features a riveted steel spider and durable aluminum blades for industrial-grade resilience.
• HVAC System Compatibility: Specifically designed as a direct fit for numerous Lennox air conditioners and heat pumps, including the 12ACB48 series.
• Vibration Reduction: Precision factory balancing minimizes noise and prevents premature wear on motor bearings.

• What is the rotation direction for this assembly? The Lennox 10W78 is designed for CCW (Counter-Clockwise) rotation when facing the discharge side.
• Does this include the set screw for the hub? This 22-inch fan assembly features a fixed hub with a 1/2-inch bore designed for standard keyed or flat-shaft motor compatibility.
• Will this fit my specific Lennox unit? This part is standard for 22-inch condenser fans; verify your model's technical manual or contact a technician to confirm the 22" diameter and 1/2" bore match your existing configuration.

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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.