Reznor 43845 Motor/Wheel Assy
The Reznor 43845 Motor/Wheel Assy is a drop-in 115V Inducer Motor/Wheel Assy designed for critical combustion management in commercial and industrial heating applications. This OEM draft inducer replacement is engineered to handle the high-static pressure requirements of the Reznor HRPD series, including HRPD 250, 300, 350, 400, and 500 models. As a veteran technician knows, maintaining the correct airflow across the heat exchanger is non-negotiable for safe ignition and optimal thermal efficiency. This centrifugal blower assembly features a balanced wheel and robust motor housing to minimize vibration-induced fatigue on the venter housing. Using an authentic ventor motor assembly ensures the pressure switch receives a consistent signal, preventing nuisance lockouts and ensuring the furnace completes its pre-purge cycle without hesitation. Replacing a seized or humming motor with this precise venter wheel assembly restores factory-spec exhaust gas velocity and prevents premature wear on the heat exchanger. Keep your facility's Reznor unit heater running at peak performance with this heavy-duty draft inducer blower motor.
- Direct OEM Compatibility: Built by Nortek Global HVAC to match the exact physical footprint and electrical tolerances of Reznor HRPD units.
- High-Torque Performance: The 115V motor provides the necessary startup torque to overcome cold-start inertia in unconditioned spaces.
- Balanced Wheel Design: Integrated wheel reduces bearing side-load, preventing the common screeching and grinding associated with aftermarket alternatives.
- Industrial-Grade Construction: Specifically designed to withstand high-temperature flue gases and the corrosive environment of unit heater venting.
Common Questions
How do I know if my Reznor 43845 has failed?
If you hear a loud grinding sound, or if the unit hums without the wheel spinning, the bearings are likely seized. You should also verify 115V at the motor leads; if power is present but the assembly doesn't rotate, the inducer motor windings or capacitor have failed.
Will this assembly fix a pressure switch lockout?
Yes, if the lockout is caused by insufficient draft or a degraded blower wheel. A worn wheel cannot move enough CFM to close the pressure switch, which is a common point of failure in older exhaust fans.
Is the wheel sold separately from the motor?
This item is a complete Motor/Wheel Assy. We recommend replacing the motor and wheel together to ensure the assembly is perfectly balanced, avoiding shaft misalignment issues during installation.
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.
Original: $1,089.72
-65%$1,089.72
$381.40Reznor 43845 Motor/Wheel Assy
The Reznor 43845 Motor/Wheel Assy is a drop-in 115V Inducer Motor/Wheel Assy designed for critical combustion management in commercial and industrial heating applications. This OEM draft inducer replacement is engineered to handle the high-static pressure requirements of the Reznor HRPD series, including HRPD 250, 300, 350, 400, and 500 models. As a veteran technician knows, maintaining the correct airflow across the heat exchanger is non-negotiable for safe ignition and optimal thermal efficiency. This centrifugal blower assembly features a balanced wheel and robust motor housing to minimize vibration-induced fatigue on the venter housing. Using an authentic ventor motor assembly ensures the pressure switch receives a consistent signal, preventing nuisance lockouts and ensuring the furnace completes its pre-purge cycle without hesitation. Replacing a seized or humming motor with this precise venter wheel assembly restores factory-spec exhaust gas velocity and prevents premature wear on the heat exchanger. Keep your facility's Reznor unit heater running at peak performance with this heavy-duty draft inducer blower motor.
- Direct OEM Compatibility: Built by Nortek Global HVAC to match the exact physical footprint and electrical tolerances of Reznor HRPD units.
- High-Torque Performance: The 115V motor provides the necessary startup torque to overcome cold-start inertia in unconditioned spaces.
- Balanced Wheel Design: Integrated wheel reduces bearing side-load, preventing the common screeching and grinding associated with aftermarket alternatives.
- Industrial-Grade Construction: Specifically designed to withstand high-temperature flue gases and the corrosive environment of unit heater venting.
Common Questions
How do I know if my Reznor 43845 has failed?
If you hear a loud grinding sound, or if the unit hums without the wheel spinning, the bearings are likely seized. You should also verify 115V at the motor leads; if power is present but the assembly doesn't rotate, the inducer motor windings or capacitor have failed.
Will this assembly fix a pressure switch lockout?
Yes, if the lockout is caused by insufficient draft or a degraded blower wheel. A worn wheel cannot move enough CFM to close the pressure switch, which is a common point of failure in older exhaust fans.
Is the wheel sold separately from the motor?
This item is a complete Motor/Wheel Assy. We recommend replacing the motor and wheel together to ensure the assembly is perfectly balanced, avoiding shaft misalignment issues during installation.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Reznor 43845 Motor/Wheel Assy is a drop-in 115V Inducer Motor/Wheel Assy designed for critical combustion management in commercial and industrial heating applications. This OEM draft inducer replacement is engineered to handle the high-static pressure requirements of the Reznor HRPD series, including HRPD 250, 300, 350, 400, and 500 models. As a veteran technician knows, maintaining the correct airflow across the heat exchanger is non-negotiable for safe ignition and optimal thermal efficiency. This centrifugal blower assembly features a balanced wheel and robust motor housing to minimize vibration-induced fatigue on the venter housing. Using an authentic ventor motor assembly ensures the pressure switch receives a consistent signal, preventing nuisance lockouts and ensuring the furnace completes its pre-purge cycle without hesitation. Replacing a seized or humming motor with this precise venter wheel assembly restores factory-spec exhaust gas velocity and prevents premature wear on the heat exchanger. Keep your facility's Reznor unit heater running at peak performance with this heavy-duty draft inducer blower motor.
- Direct OEM Compatibility: Built by Nortek Global HVAC to match the exact physical footprint and electrical tolerances of Reznor HRPD units.
- High-Torque Performance: The 115V motor provides the necessary startup torque to overcome cold-start inertia in unconditioned spaces.
- Balanced Wheel Design: Integrated wheel reduces bearing side-load, preventing the common screeching and grinding associated with aftermarket alternatives.
- Industrial-Grade Construction: Specifically designed to withstand high-temperature flue gases and the corrosive environment of unit heater venting.
Common Questions
How do I know if my Reznor 43845 has failed?
If you hear a loud grinding sound, or if the unit hums without the wheel spinning, the bearings are likely seized. You should also verify 115V at the motor leads; if power is present but the assembly doesn't rotate, the inducer motor windings or capacitor have failed.
Will this assembly fix a pressure switch lockout?
Yes, if the lockout is caused by insufficient draft or a degraded blower wheel. A worn wheel cannot move enough CFM to close the pressure switch, which is a common point of failure in older exhaust fans.
Is the wheel sold separately from the motor?
This item is a complete Motor/Wheel Assy. We recommend replacing the motor and wheel together to ensure the assembly is perfectly balanced, avoiding shaft misalignment issues during installation.
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.
