Lochinvar & A.O. Smith 100074316 Thermistor
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Lochinvar & A.O. Smith 100074316 Thermistor

Lochinvar & A.O. Smith 100074316 Thermistor

When you are dealing with a lockout on a high-efficiency Lochinvar Knight or A.O. Smith commercial water heater, the 100074316 Thermistor is often the culprit behind exhaust-related error codes. This genuine DV exhaust thermistor assembly is a critical NTC (Negative Temperature Coefficient) sensor designed to monitor flue gas temperatures. It provides real-time resistance feedback to the control board, ensuring the system stays within safe thermal parameters and preventing damage to PVC or CPVC venting components. As a direct OEM replacement part, it eliminates the calibration drift common with aftermarket sensors, ensuring your exhaust gas temperature monitoring remains accurate for optimal combustion cycles.

The 100074316 is engineered for a precise fit in the exhaust manifold, utilizing a high-grade sensing probe that resists the corrosive effects of flue condensates. Whether you are servicing a Lochinvar boiler or a commercial tankless unit, this assembly is vital for preventing nuisance trips and high-limit shutdowns. Replacing a fouled or failing thermistor restores the communication link between the venting system and the integrated control module, maintaining the high-efficiency performance your customers expect from professional-grade HVAC systems.

Key Benefits
  • Optimized Safety: Accurately tracks exhaust temperatures to prevent overheating and potential vent system failure.
  • OEM Precision: Guaranteed compatibility with Lochinvar and A.O. Smith equipment, ensuring correct resistance-to-temperature mapping.
  • Direct Replacement: Designed for an exact fit, reducing labor time during service calls.
  • Corrosion Resistance: Built to withstand the harsh environment of high-efficiency condensing flue gases.
Common Questions
  • What are the symptoms of a failing exhaust thermistor? You’ll typically see specific error codes related to "Exhaust Overheat" or "Sensor Open/Short," even if the actual temperatures seem normal.
  • Can I test this part with a multimeter? Yes, as an NTC sensor, you should see resistance values change predictably as the probe is exposed to varying heat levels.
  • Is this assembly compatible with both Lochinvar and A.O. Smith? Correct. This part number is standardized across several major brands under the manufacturer's umbrella for condensing water heaters and boilers.

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.

$5.80

Original: $16.57

-65%
Lochinvar & A.O. Smith 100074316 Thermistor

$16.57

$5.80

Lochinvar & A.O. Smith 100074316 Thermistor

When you are dealing with a lockout on a high-efficiency Lochinvar Knight or A.O. Smith commercial water heater, the 100074316 Thermistor is often the culprit behind exhaust-related error codes. This genuine DV exhaust thermistor assembly is a critical NTC (Negative Temperature Coefficient) sensor designed to monitor flue gas temperatures. It provides real-time resistance feedback to the control board, ensuring the system stays within safe thermal parameters and preventing damage to PVC or CPVC venting components. As a direct OEM replacement part, it eliminates the calibration drift common with aftermarket sensors, ensuring your exhaust gas temperature monitoring remains accurate for optimal combustion cycles.

The 100074316 is engineered for a precise fit in the exhaust manifold, utilizing a high-grade sensing probe that resists the corrosive effects of flue condensates. Whether you are servicing a Lochinvar boiler or a commercial tankless unit, this assembly is vital for preventing nuisance trips and high-limit shutdowns. Replacing a fouled or failing thermistor restores the communication link between the venting system and the integrated control module, maintaining the high-efficiency performance your customers expect from professional-grade HVAC systems.

Key Benefits
  • Optimized Safety: Accurately tracks exhaust temperatures to prevent overheating and potential vent system failure.
  • OEM Precision: Guaranteed compatibility with Lochinvar and A.O. Smith equipment, ensuring correct resistance-to-temperature mapping.
  • Direct Replacement: Designed for an exact fit, reducing labor time during service calls.
  • Corrosion Resistance: Built to withstand the harsh environment of high-efficiency condensing flue gases.
Common Questions
  • What are the symptoms of a failing exhaust thermistor? You’ll typically see specific error codes related to "Exhaust Overheat" or "Sensor Open/Short," even if the actual temperatures seem normal.
  • Can I test this part with a multimeter? Yes, as an NTC sensor, you should see resistance values change predictably as the probe is exposed to varying heat levels.
  • Is this assembly compatible with both Lochinvar and A.O. Smith? Correct. This part number is standardized across several major brands under the manufacturer's umbrella for condensing water heaters and boilers.

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

Shipping & Returns

Description

When you are dealing with a lockout on a high-efficiency Lochinvar Knight or A.O. Smith commercial water heater, the 100074316 Thermistor is often the culprit behind exhaust-related error codes. This genuine DV exhaust thermistor assembly is a critical NTC (Negative Temperature Coefficient) sensor designed to monitor flue gas temperatures. It provides real-time resistance feedback to the control board, ensuring the system stays within safe thermal parameters and preventing damage to PVC or CPVC venting components. As a direct OEM replacement part, it eliminates the calibration drift common with aftermarket sensors, ensuring your exhaust gas temperature monitoring remains accurate for optimal combustion cycles.

The 100074316 is engineered for a precise fit in the exhaust manifold, utilizing a high-grade sensing probe that resists the corrosive effects of flue condensates. Whether you are servicing a Lochinvar boiler or a commercial tankless unit, this assembly is vital for preventing nuisance trips and high-limit shutdowns. Replacing a fouled or failing thermistor restores the communication link between the venting system and the integrated control module, maintaining the high-efficiency performance your customers expect from professional-grade HVAC systems.

Key Benefits
  • Optimized Safety: Accurately tracks exhaust temperatures to prevent overheating and potential vent system failure.
  • OEM Precision: Guaranteed compatibility with Lochinvar and A.O. Smith equipment, ensuring correct resistance-to-temperature mapping.
  • Direct Replacement: Designed for an exact fit, reducing labor time during service calls.
  • Corrosion Resistance: Built to withstand the harsh environment of high-efficiency condensing flue gases.
Common Questions
  • What are the symptoms of a failing exhaust thermistor? You’ll typically see specific error codes related to "Exhaust Overheat" or "Sensor Open/Short," even if the actual temperatures seem normal.
  • Can I test this part with a multimeter? Yes, as an NTC sensor, you should see resistance values change predictably as the probe is exposed to varying heat levels.
  • Is this assembly compatible with both Lochinvar and A.O. Smith? Correct. This part number is standardized across several major brands under the manufacturer's umbrella for condensing water heaters and boilers.

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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