Reznor 29793 Fan Blade

The Reznor 29793 Fan Blade is a precision-engineered OEM replacement part designed for specific Reznor unit heater configurations. This 3-inch diameter fan blade features a 10-blade design optimized for consistent airflow and thermal regulation within the heat exchanger assembly. Built with a 1/4" bore and set for CW rotation (clockwise), this component ensures exact fitment and mechanical alignment with the draft inducer motor or venter assembly. Maintaining proper HVAC blower wheel integrity is critical for preventing high-limit trips and ensuring efficient combustion gas venting. For contractors performing preventative maintenance or emergency repairs, utilizing this industrial fan blade ensures the system operates within original factory static pressure specifications. The durable construction resists the high-temperature environments common in industrial gas-fired unit heaters, preventing blade deformation and vibration issues that can lead to premature motor failure or bearing wear.

Technical Specifications & Key Benefits

• Precision Airflow: The 10-blade configuration provides the specific CFM required for inducer housing cooling.
• Bore Diameter: 1/4" hub ensures a secure, slip-free connection to the motor shaft.
• Directional Rotation: Verified CW rotation matches Reznor replacement parts standards for specific series.
• Compact Footprint: 3" diameter allows for installation in tight blower compartments without housing interference.
• Structural Integrity: Engineered to withstand high-duty cycles without pitch loss or balance degradation.

Common Questions & Technical Support

What happens if the rotation is reversed?CW rotation fan blade replacement
Installing a CW blade on a CCW motor will significantly reduce static pressure and airflow, likely causing the unit to shut down via the pressure switch or overheat. Always verify motor rotation before tightening the set screw.

Is this compatible with direct-drive inducer motors?Reznor heater blower parts
Yes, the 29793 is designed to mount directly to the motor shaft. Ensure the shaft is clean of debris or oxidation to prevent eccentric rotation and vibration.

How do I confirm this fits my Reznor heater?HVAC replacement fan blades
Cross-reference your heater’s model number and series with the parts list. This 3-inch blade is typically found in specific power-vented units where space is a constraint.

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.