Rheem-Ruud 70-21859-05 Fan Blade

The Rheem-Ruud 70-21859-05 Fan Blade is a precision-engineered OEM replacement condenser fan blade designed specifically for demanding HVACR applications. This 18-inch diameter component features a 28-degree pitch and a 2-blade configuration to ensure optimal airflow efficiency and heat dissipation in outdoor condensing units. Operating with a CCW rotation (counter-clockwise) when facing the air discharge side, this blade is critical for maintaining correct static pressure and system performance. The hub is positioned on the intake side for a 1/2 inch bore, ensuring a secure and balanced fit on the motor shaft. As a direct replacement for 70-21858-05, this part eliminates the need for field modifications, allowing for a fast and reliable swap during service calls. When replacing a Rheem condenser fan blade, it is vital to verify the pitch and rotation to avoid motor overload or reduced cooling capacity. This genuine Protech 70-21859-05 fan blade provides the robust construction necessary to withstand harsh outdoor environments and maintain system equilibrium.

• Optimized Airflow: The 28-degree pitch is calibrated for maximum heat transfer across the condenser coils.
• Direct OEM Fit: Engineered as a precise 70-21858-05 replacement for seamless installation.
• Durable Construction: Built to withstand high-velocity operation and outdoor exposure without warping.
• Vibration Reduction: Factory-balanced 2-blade design reduces mechanical stress on the fan motor bearings.
• Standardized Bore: Features a universal 1/2" bore size compatible with standard Rheem and Ruud condenser motors.

Is the 70-21859-05 compatible with other brands?
While this is a genuine Rheem-Ruud part, it may fit other brands if the 18" diameter, 1/2" bore, 28-degree pitch, and CCW rotation specifications match exactly. Always verify your specific model data.

Which direction should the rotation be?
This blade is designed for CCW rotation when viewing the unit from the air discharge side. Installing a blade with the incorrect rotation will result in poor cooling and potential motor failure.

Does this blade include the set screw?
Typically, these OEM fan blades include the necessary hub assembly and set screw for securing the blade to the motor shaft, though reusing the existing hardware is common practice if it remains in good condition.

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.