
Reznor 125566 Fan Blade
The Reznor 125566 Fan Blade is a critical OEM replacement component engineered for high-efficiency airflow in commercial and industrial unit heaters. This specific 15.5-inch diameter fan blade is precision-balanced to minimize vibration and bearing wear on the blower motor. Featuring a 31-degree pitch and a 4-blade configuration, it provides the exact static pressure required for optimal heat exchanger cooling and heat throw. Designed for CW rotation (clockwise) when facing the discharge side, it includes a 1/2-inch bore for secure mounting on standard motor shafts. Using a genuine Reznor HVAC replacement part ensures that your system maintains its original CFM ratings and safety parameters. As a veteran-grade industrial heater fan blade, the 125566 is built to withstand the high-cycle demands of warehouse and workshop environments, preventing the common resonance issues associated with generic, thinner-gauge alternatives.
Key Benefits- Factory-Spec Performance: Restores original airflow velocity to prevent high-limit trips and heat exchanger overheating.
- Direct Fit Compatibility: The 1/2" bore and precision hub placement allow for rapid field installation without shaft modifications.
- Heavy-Duty Construction: Built to withstand commercial duty cycles, ensuring the 4-blade assembly maintains its 31-degree pitch over time.
- System Longevity: Proper balance reduces radial load on motor bearings, extending the service life of the entire drive assembly.
How do I determine the rotation of my Reznor fan blade?
Standard industry practice defines rotation by looking at the discharge side of the blade. The Reznor 125566 is a CW (Clockwise) rotation blade. Always verify your motor's rotation before installation.
Why is my unit heater vibrating after replacing the fan blade?
Vibration usually stems from improper hub seating or using a generic blade that isn't precision-balanced. Ensure the 1/2-inch bore set screw is tightened on the flat of the motor shaft and that the blade is not bent during unboxing.
What happens if the 31-degree pitch is incorrect?
Using a blade with the wrong pitch will alter the motor's amp draw and the system's CFM. A shallower pitch reduces airflow, potentially causing the heat exchanger to overheat, while a steeper pitch can overload the blower motor.
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.
Original: $123.72
-65%$123.72
$43.30Reznor 125566 Fan Blade
The Reznor 125566 Fan Blade is a critical OEM replacement component engineered for high-efficiency airflow in commercial and industrial unit heaters. This specific 15.5-inch diameter fan blade is precision-balanced to minimize vibration and bearing wear on the blower motor. Featuring a 31-degree pitch and a 4-blade configuration, it provides the exact static pressure required for optimal heat exchanger cooling and heat throw. Designed for CW rotation (clockwise) when facing the discharge side, it includes a 1/2-inch bore for secure mounting on standard motor shafts. Using a genuine Reznor HVAC replacement part ensures that your system maintains its original CFM ratings and safety parameters. As a veteran-grade industrial heater fan blade, the 125566 is built to withstand the high-cycle demands of warehouse and workshop environments, preventing the common resonance issues associated with generic, thinner-gauge alternatives.
Key Benefits- Factory-Spec Performance: Restores original airflow velocity to prevent high-limit trips and heat exchanger overheating.
- Direct Fit Compatibility: The 1/2" bore and precision hub placement allow for rapid field installation without shaft modifications.
- Heavy-Duty Construction: Built to withstand commercial duty cycles, ensuring the 4-blade assembly maintains its 31-degree pitch over time.
- System Longevity: Proper balance reduces radial load on motor bearings, extending the service life of the entire drive assembly.
How do I determine the rotation of my Reznor fan blade?
Standard industry practice defines rotation by looking at the discharge side of the blade. The Reznor 125566 is a CW (Clockwise) rotation blade. Always verify your motor's rotation before installation.
Why is my unit heater vibrating after replacing the fan blade?
Vibration usually stems from improper hub seating or using a generic blade that isn't precision-balanced. Ensure the 1/2-inch bore set screw is tightened on the flat of the motor shaft and that the blade is not bent during unboxing.
What happens if the 31-degree pitch is incorrect?
Using a blade with the wrong pitch will alter the motor's amp draw and the system's CFM. A shallower pitch reduces airflow, potentially causing the heat exchanger to overheat, while a steeper pitch can overload the blower motor.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Reznor 125566 Fan Blade is a critical OEM replacement component engineered for high-efficiency airflow in commercial and industrial unit heaters. This specific 15.5-inch diameter fan blade is precision-balanced to minimize vibration and bearing wear on the blower motor. Featuring a 31-degree pitch and a 4-blade configuration, it provides the exact static pressure required for optimal heat exchanger cooling and heat throw. Designed for CW rotation (clockwise) when facing the discharge side, it includes a 1/2-inch bore for secure mounting on standard motor shafts. Using a genuine Reznor HVAC replacement part ensures that your system maintains its original CFM ratings and safety parameters. As a veteran-grade industrial heater fan blade, the 125566 is built to withstand the high-cycle demands of warehouse and workshop environments, preventing the common resonance issues associated with generic, thinner-gauge alternatives.
Key Benefits- Factory-Spec Performance: Restores original airflow velocity to prevent high-limit trips and heat exchanger overheating.
- Direct Fit Compatibility: The 1/2" bore and precision hub placement allow for rapid field installation without shaft modifications.
- Heavy-Duty Construction: Built to withstand commercial duty cycles, ensuring the 4-blade assembly maintains its 31-degree pitch over time.
- System Longevity: Proper balance reduces radial load on motor bearings, extending the service life of the entire drive assembly.
How do I determine the rotation of my Reznor fan blade?
Standard industry practice defines rotation by looking at the discharge side of the blade. The Reznor 125566 is a CW (Clockwise) rotation blade. Always verify your motor's rotation before installation.
Why is my unit heater vibrating after replacing the fan blade?
Vibration usually stems from improper hub seating or using a generic blade that isn't precision-balanced. Ensure the 1/2-inch bore set screw is tightened on the flat of the motor shaft and that the blade is not bent during unboxing.
What happens if the 31-degree pitch is incorrect?
Using a blade with the wrong pitch will alter the motor's amp draw and the system's CFM. A shallower pitch reduces airflow, potentially causing the heat exchanger to overheat, while a steeper pitch can overload the blower motor.
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.












