Trane FAN1251 Fan Blade

For field technicians and mechanical contractors, the Trane FAN1251 Fan Blade is a critical OEM replacement part engineered for precise air displacement in commercial and industrial HVAC units. This aluminum 3-blade fan features a 20-inch diameter and a 22-degree pitch, specifically calibrated to maintain factory-spec static pressure and system equilibrium. Designed for clockwise (CW) rotation, it includes a 1/2" bore on the discharge side for direct mounting to standard motor shafts, ensuring a secure interference fit that minimizes vibration and protects the motor bearings from premature wear.

A failing fan blade disrupts heat exchange efficiency and can lead to compressor overheating. Replacing a warped or corroded blade with this genuine Trane FAN1251 ensures your system meets its original AMCA air performance ratings. The high-grade construction is built to withstand the rigorous tip speeds and thermal stress common in condenser fan motor applications. When performing a repair, verify the hub position and blade orientation to ensure optimal CFM delivery and electrical draw within the nameplate parameters of the existing air handler or rooftop unit.

• Precision Balanced: Factory-set 22-degree blade angle reduces mechanical noise and prevents harmonic vibration during high-speed operation.
• Durable Construction: Heavy-duty aluminum blades provide excellent corrosion resistance in outdoor environments, maintaining aerodynamic efficiency over time.
• Direct OEM Fit: Designed specifically for Trane HVAC systems, eliminating the need for shaft adapters or field modifications.
• Optimized Airflow: The 3-blade configuration is engineered to maximize air volume while minimizing the load on the fan motor, helping to stabilize energy consumption.

What is the rotation for the Trane FAN1251?
This model is designed for clockwise (CW) rotation when viewing the blade from the discharge side. Always check the rotation arrow on the existing motor before installation.

Is the Trane FAN1251 compatible with 1/2-inch shafts?
Yes, this fan blade features a 1/2" hub bore, making it a standard drop-in replacement for most compatible Trane condenser and air handler units.

How do I confirm this is the right replacement fan blade?
Cross-reference the diameter (20"), pitch (22 degrees), and part number (FAN1251) with the equipment’s technical data sheet or the stamp on the original blade spider.

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.