
Lochinvar & A.O. Smith 100168668 Air Sensor
The Lochinvar & A.O. Smith 100168668 Air Sensor is a critical component for achieving precise outdoor reset control in high-efficiency 100 Series and 110 Series heating systems. Designed for seamless integration with Smart System controls, this NTC thermistor allows the boiler to dynamically adjust its firing rate and water temperature set point based on real-time ambient conditions. By providing accurate outdoor temperature sensing, it enables weather-responsive heating, significantly reducing short-cycling and optimizing fuel consumption for commercial and residential hydronic applications.
This genuine OEM replacement part ensures full compatibility with the Lochinvar Knight and A.O. Smith XP Plus product lines. Field-tested for durability in extreme environments, the 100168668 sensor is the standard for technicians looking to restore energy efficiency and system reliability. Proper placement on the north-facing side of the structure is recommended to prevent solar gain from skewing resistance-to-temperature data, ensuring the boiler operates at peak modulation according to the programmed reset curve.
Key Benefits- Optimized Modulation: Enables the control module to calculate the precise boiler reset curve for maximum efficiency.
- Direct Compatibility: Engineered specifically for Lochinvar 100168668 and A.O. Smith 100168668 configurations.
- NTC Technology: High-precision thermistor provides stable negative temperature coefficient resistance for accurate controller feedback.
- System Longevity: Reduces thermal stress on the heat exchanger by maintaining lower, consistent operating temperatures.
Which models are compatible with this outdoor air sensor?
The 100168668 sensor is utilized across Lochinvar Knight (WHN, KHN, KBN) and A.O. Smith XP series boilers, as well as several high-efficiency water heater models utilizing 100/110 series controls.
What are the symptoms of a failing outdoor temperature sensor?
Common signs include the boiler staying in "Warm Weather Shutdown" (WWSD) mode incorrectly, error codes related to sensor shorted or sensor open conditions, or the system failing to modulate water temperature despite dropping outdoor temperatures.
Is this a direct replacement for older Lochinvar part numbers?
Yes, this part number replaces and services several legacy sensor configurations. Always verify your specific Smart System firmware version to ensure the reset curve parameters match the 10k ohm (or specified) resistance profile.
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: $279.75
-65%$279.75
$97.91Lochinvar & A.O. Smith 100168668 Air Sensor
The Lochinvar & A.O. Smith 100168668 Air Sensor is a critical component for achieving precise outdoor reset control in high-efficiency 100 Series and 110 Series heating systems. Designed for seamless integration with Smart System controls, this NTC thermistor allows the boiler to dynamically adjust its firing rate and water temperature set point based on real-time ambient conditions. By providing accurate outdoor temperature sensing, it enables weather-responsive heating, significantly reducing short-cycling and optimizing fuel consumption for commercial and residential hydronic applications.
This genuine OEM replacement part ensures full compatibility with the Lochinvar Knight and A.O. Smith XP Plus product lines. Field-tested for durability in extreme environments, the 100168668 sensor is the standard for technicians looking to restore energy efficiency and system reliability. Proper placement on the north-facing side of the structure is recommended to prevent solar gain from skewing resistance-to-temperature data, ensuring the boiler operates at peak modulation according to the programmed reset curve.
Key Benefits- Optimized Modulation: Enables the control module to calculate the precise boiler reset curve for maximum efficiency.
- Direct Compatibility: Engineered specifically for Lochinvar 100168668 and A.O. Smith 100168668 configurations.
- NTC Technology: High-precision thermistor provides stable negative temperature coefficient resistance for accurate controller feedback.
- System Longevity: Reduces thermal stress on the heat exchanger by maintaining lower, consistent operating temperatures.
Which models are compatible with this outdoor air sensor?
The 100168668 sensor is utilized across Lochinvar Knight (WHN, KHN, KBN) and A.O. Smith XP series boilers, as well as several high-efficiency water heater models utilizing 100/110 series controls.
What are the symptoms of a failing outdoor temperature sensor?
Common signs include the boiler staying in "Warm Weather Shutdown" (WWSD) mode incorrectly, error codes related to sensor shorted or sensor open conditions, or the system failing to modulate water temperature despite dropping outdoor temperatures.
Is this a direct replacement for older Lochinvar part numbers?
Yes, this part number replaces and services several legacy sensor configurations. Always verify your specific Smart System firmware version to ensure the reset curve parameters match the 10k ohm (or specified) resistance profile.
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
The Lochinvar & A.O. Smith 100168668 Air Sensor is a critical component for achieving precise outdoor reset control in high-efficiency 100 Series and 110 Series heating systems. Designed for seamless integration with Smart System controls, this NTC thermistor allows the boiler to dynamically adjust its firing rate and water temperature set point based on real-time ambient conditions. By providing accurate outdoor temperature sensing, it enables weather-responsive heating, significantly reducing short-cycling and optimizing fuel consumption for commercial and residential hydronic applications.
This genuine OEM replacement part ensures full compatibility with the Lochinvar Knight and A.O. Smith XP Plus product lines. Field-tested for durability in extreme environments, the 100168668 sensor is the standard for technicians looking to restore energy efficiency and system reliability. Proper placement on the north-facing side of the structure is recommended to prevent solar gain from skewing resistance-to-temperature data, ensuring the boiler operates at peak modulation according to the programmed reset curve.
Key Benefits- Optimized Modulation: Enables the control module to calculate the precise boiler reset curve for maximum efficiency.
- Direct Compatibility: Engineered specifically for Lochinvar 100168668 and A.O. Smith 100168668 configurations.
- NTC Technology: High-precision thermistor provides stable negative temperature coefficient resistance for accurate controller feedback.
- System Longevity: Reduces thermal stress on the heat exchanger by maintaining lower, consistent operating temperatures.
Which models are compatible with this outdoor air sensor?
The 100168668 sensor is utilized across Lochinvar Knight (WHN, KHN, KBN) and A.O. Smith XP series boilers, as well as several high-efficiency water heater models utilizing 100/110 series controls.
What are the symptoms of a failing outdoor temperature sensor?
Common signs include the boiler staying in "Warm Weather Shutdown" (WWSD) mode incorrectly, error codes related to sensor shorted or sensor open conditions, or the system failing to modulate water temperature despite dropping outdoor temperatures.
Is this a direct replacement for older Lochinvar part numbers?
Yes, this part number replaces and services several legacy sensor configurations. Always verify your specific Smart System firmware version to ensure the reset curve parameters match the 10k ohm (or specified) resistance profile.
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.












