
Lochinvar & A.O. Smith 100093745 Sensor
As a veteran tech, you know that a high-efficiency boiler or water heater is only as reliable as its feedback loop. The Lochinvar & A.O. Smith 100093745 Sensor is a critical K Temperature Sensor designed for precision thermal monitoring in commercial and residential heating systems. When you are troubleshooting a Lochinvar boiler temperature sensor failure or inconsistent firing rates, this OEM component is the direct replacement needed to restore factory-spec thermistor ????????????? and accuracy. Field-tested for durability, this 100093745 temperature probe ensures the control board receives real-time data to modulate the burner and prevent overheating or short-cycling.
This NTC thermistor sensor integrates seamlessly with compatible A.O. Smith water heater parts and Lochinvar Knight or Armor series units. Replacing a fouled or drifted sensor with this genuine HVAC replacement part eliminates the "sensor out of range" errors that plague aging systems. Whether you are performing routine maintenance or an emergency repair, using a calibrated replacement temperature sensor is the only way to safeguard the heat exchanger and maintain optimal fuel-to-air ratios for peak efficiency.
Key Benefits:- Precision Thermal Monitoring: Provides accurate Kelvin-scale data to the system controller for tighter modulation.
- OEM Compatibility: Guaranteed fit for specific Lochinvar and A.O. Smith models, ensuring electrical resistance matches the original curves.
- System Protection: Critical for high-limit safety and preventing expensive heat exchanger damage.
- Simplified Installation: Designed with standard plug-and-play connectors for fast swap-outs during service calls.
What are the symptoms of a failing 100093745 sensor?
Typically, you will see a "Sensor Open" or "Sensor Short" error code on the display. You might also notice the boiler hunting or failing to reach the setpoint because the K Temperature Sensor is sending drifted resistance values.
Can I test this sensor with a multimeter?
Yes, you can check the 100093745 by measuring ohms across the terminals and comparing the reading to the manufacturer’s temperature-resistance chart. If it reads open or shows no change when heated, it is dead.
Is this compatible with both Lochinvar and A.O. Smith units?
Exactly. Since Lochinvar is an A.O. Smith company, this 100093745 sensor is the cross-referenced OEM part for multiple high-efficiency platforms across both brands.
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: $74.56
-65%$74.56
$26.10Lochinvar & A.O. Smith 100093745 Sensor
As a veteran tech, you know that a high-efficiency boiler or water heater is only as reliable as its feedback loop. The Lochinvar & A.O. Smith 100093745 Sensor is a critical K Temperature Sensor designed for precision thermal monitoring in commercial and residential heating systems. When you are troubleshooting a Lochinvar boiler temperature sensor failure or inconsistent firing rates, this OEM component is the direct replacement needed to restore factory-spec thermistor ????????????? and accuracy. Field-tested for durability, this 100093745 temperature probe ensures the control board receives real-time data to modulate the burner and prevent overheating or short-cycling.
This NTC thermistor sensor integrates seamlessly with compatible A.O. Smith water heater parts and Lochinvar Knight or Armor series units. Replacing a fouled or drifted sensor with this genuine HVAC replacement part eliminates the "sensor out of range" errors that plague aging systems. Whether you are performing routine maintenance or an emergency repair, using a calibrated replacement temperature sensor is the only way to safeguard the heat exchanger and maintain optimal fuel-to-air ratios for peak efficiency.
Key Benefits:- Precision Thermal Monitoring: Provides accurate Kelvin-scale data to the system controller for tighter modulation.
- OEM Compatibility: Guaranteed fit for specific Lochinvar and A.O. Smith models, ensuring electrical resistance matches the original curves.
- System Protection: Critical for high-limit safety and preventing expensive heat exchanger damage.
- Simplified Installation: Designed with standard plug-and-play connectors for fast swap-outs during service calls.
What are the symptoms of a failing 100093745 sensor?
Typically, you will see a "Sensor Open" or "Sensor Short" error code on the display. You might also notice the boiler hunting or failing to reach the setpoint because the K Temperature Sensor is sending drifted resistance values.
Can I test this sensor with a multimeter?
Yes, you can check the 100093745 by measuring ohms across the terminals and comparing the reading to the manufacturer’s temperature-resistance chart. If it reads open or shows no change when heated, it is dead.
Is this compatible with both Lochinvar and A.O. Smith units?
Exactly. Since Lochinvar is an A.O. Smith company, this 100093745 sensor is the cross-referenced OEM part for multiple high-efficiency platforms across both brands.
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.
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Description
As a veteran tech, you know that a high-efficiency boiler or water heater is only as reliable as its feedback loop. The Lochinvar & A.O. Smith 100093745 Sensor is a critical K Temperature Sensor designed for precision thermal monitoring in commercial and residential heating systems. When you are troubleshooting a Lochinvar boiler temperature sensor failure or inconsistent firing rates, this OEM component is the direct replacement needed to restore factory-spec thermistor ????????????? and accuracy. Field-tested for durability, this 100093745 temperature probe ensures the control board receives real-time data to modulate the burner and prevent overheating or short-cycling.
This NTC thermistor sensor integrates seamlessly with compatible A.O. Smith water heater parts and Lochinvar Knight or Armor series units. Replacing a fouled or drifted sensor with this genuine HVAC replacement part eliminates the "sensor out of range" errors that plague aging systems. Whether you are performing routine maintenance or an emergency repair, using a calibrated replacement temperature sensor is the only way to safeguard the heat exchanger and maintain optimal fuel-to-air ratios for peak efficiency.
Key Benefits:- Precision Thermal Monitoring: Provides accurate Kelvin-scale data to the system controller for tighter modulation.
- OEM Compatibility: Guaranteed fit for specific Lochinvar and A.O. Smith models, ensuring electrical resistance matches the original curves.
- System Protection: Critical for high-limit safety and preventing expensive heat exchanger damage.
- Simplified Installation: Designed with standard plug-and-play connectors for fast swap-outs during service calls.
What are the symptoms of a failing 100093745 sensor?
Typically, you will see a "Sensor Open" or "Sensor Short" error code on the display. You might also notice the boiler hunting or failing to reach the setpoint because the K Temperature Sensor is sending drifted resistance values.
Can I test this sensor with a multimeter?
Yes, you can check the 100093745 by measuring ohms across the terminals and comparing the reading to the manufacturer’s temperature-resistance chart. If it reads open or shows no change when heated, it is dead.
Is this compatible with both Lochinvar and A.O. Smith units?
Exactly. Since Lochinvar is an A.O. Smith company, this 100093745 sensor is the cross-referenced OEM part for multiple high-efficiency platforms across both brands.
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.












