Lochinvar & A.O. Smith 100108684 Thermostat
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Lochinvar & A.O. Smith 100108684 Thermostat

Lochinvar & A.O. Smith 100108684 Thermostat

As a seasoned technician, you know that maintaining precise thermal regulation is critical for the longevity of any commercial or residential electric water heater. The Lochinvar & A.O. Smith 100108684 Thermostat is a high-performance upper thermostat replacement engineered for reliability in demanding HVACR applications. This genuine OEM water heater part features an integrated Energy Cut-Off (ECO) safety switch, designed to provide manual reset protection by instantly disconnecting the heating element if temperatures exceed safe operating limits. This surface-mount thermostat for AO Smith and Lochinvar units ensures accurate temperature sensing and consistent cycling, preventing over-firing and protecting the tank from thermal stress. Built to meet exact factory specifications, it includes the protective terminal cover to ensure a clean, secure install that meets local electrical codes. When diagnosing an upper-element failure or a tripped high-limit, this 100108684 upper thermostat provides the necessary 120-480V compatibility needed to restore system efficiency quickly.

Key Benefits:
  • Dual-Function Control: Combines adjustable temperature sensing with a manual reset ECO high-limit safety for comprehensive protection.
  • OEM Compatibility: Specifically designed to fit Lochinvar, A.O. Smith, and State electric water heater models, ensuring a perfect mechanical fit and electrical match.
  • Enhanced Safety: Includes a dedicated terminal cover to protect against accidental contact and debris, essential for professional-grade installations.
  • Heavy-Duty Construction: Built for high-voltage HVACR systems, supporting up to 480 VAC for versatile application across various heater series.
Common Questions:

What is the purpose of the ECO switch on this thermostat?
The Energy Cut-Off (ECO) is a safety high-limit that breaks the electrical circuit if the water temperature reaches an unsafe level, preventing potential tank damage or scalding. It requires a manual reset once the condition is corrected.

Can this part be used in place of a lower thermostat?
No, the 100108684 is an upper thermostat. While it shares some characteristics with lower units, the terminal configuration and the inclusion of the ECO high-limit are specific to the primary control position at the top of the tank.

Does this include the terminal shield?
Yes, this unit comes with the protective cover required to insulate the electrical terminals, ensuring the repair remains compliant with safety standards.

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.

$23.93
Lochinvar & A.O. Smith 100108684 Thermostat
$23.93

Lochinvar & A.O. Smith 100108684 Thermostat

As a seasoned technician, you know that maintaining precise thermal regulation is critical for the longevity of any commercial or residential electric water heater. The Lochinvar & A.O. Smith 100108684 Thermostat is a high-performance upper thermostat replacement engineered for reliability in demanding HVACR applications. This genuine OEM water heater part features an integrated Energy Cut-Off (ECO) safety switch, designed to provide manual reset protection by instantly disconnecting the heating element if temperatures exceed safe operating limits. This surface-mount thermostat for AO Smith and Lochinvar units ensures accurate temperature sensing and consistent cycling, preventing over-firing and protecting the tank from thermal stress. Built to meet exact factory specifications, it includes the protective terminal cover to ensure a clean, secure install that meets local electrical codes. When diagnosing an upper-element failure or a tripped high-limit, this 100108684 upper thermostat provides the necessary 120-480V compatibility needed to restore system efficiency quickly.

Key Benefits:
  • Dual-Function Control: Combines adjustable temperature sensing with a manual reset ECO high-limit safety for comprehensive protection.
  • OEM Compatibility: Specifically designed to fit Lochinvar, A.O. Smith, and State electric water heater models, ensuring a perfect mechanical fit and electrical match.
  • Enhanced Safety: Includes a dedicated terminal cover to protect against accidental contact and debris, essential for professional-grade installations.
  • Heavy-Duty Construction: Built for high-voltage HVACR systems, supporting up to 480 VAC for versatile application across various heater series.
Common Questions:

What is the purpose of the ECO switch on this thermostat?
The Energy Cut-Off (ECO) is a safety high-limit that breaks the electrical circuit if the water temperature reaches an unsafe level, preventing potential tank damage or scalding. It requires a manual reset once the condition is corrected.

Can this part be used in place of a lower thermostat?
No, the 100108684 is an upper thermostat. While it shares some characteristics with lower units, the terminal configuration and the inclusion of the ECO high-limit are specific to the primary control position at the top of the tank.

Does this include the terminal shield?
Yes, this unit comes with the protective cover required to insulate the electrical terminals, ensuring the repair remains compliant with safety standards.

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

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Description

As a seasoned technician, you know that maintaining precise thermal regulation is critical for the longevity of any commercial or residential electric water heater. The Lochinvar & A.O. Smith 100108684 Thermostat is a high-performance upper thermostat replacement engineered for reliability in demanding HVACR applications. This genuine OEM water heater part features an integrated Energy Cut-Off (ECO) safety switch, designed to provide manual reset protection by instantly disconnecting the heating element if temperatures exceed safe operating limits. This surface-mount thermostat for AO Smith and Lochinvar units ensures accurate temperature sensing and consistent cycling, preventing over-firing and protecting the tank from thermal stress. Built to meet exact factory specifications, it includes the protective terminal cover to ensure a clean, secure install that meets local electrical codes. When diagnosing an upper-element failure or a tripped high-limit, this 100108684 upper thermostat provides the necessary 120-480V compatibility needed to restore system efficiency quickly.

Key Benefits:
  • Dual-Function Control: Combines adjustable temperature sensing with a manual reset ECO high-limit safety for comprehensive protection.
  • OEM Compatibility: Specifically designed to fit Lochinvar, A.O. Smith, and State electric water heater models, ensuring a perfect mechanical fit and electrical match.
  • Enhanced Safety: Includes a dedicated terminal cover to protect against accidental contact and debris, essential for professional-grade installations.
  • Heavy-Duty Construction: Built for high-voltage HVACR systems, supporting up to 480 VAC for versatile application across various heater series.
Common Questions:

What is the purpose of the ECO switch on this thermostat?
The Energy Cut-Off (ECO) is a safety high-limit that breaks the electrical circuit if the water temperature reaches an unsafe level, preventing potential tank damage or scalding. It requires a manual reset once the condition is corrected.

Can this part be used in place of a lower thermostat?
No, the 100108684 is an upper thermostat. While it shares some characteristics with lower units, the terminal configuration and the inclusion of the ECO high-limit are specific to the primary control position at the top of the tank.

Does this include the terminal shield?
Yes, this unit comes with the protective cover required to insulate the electrical terminals, ensuring the repair remains compliant with safety standards.

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.

Lochinvar & A.O. Smith 100108684 Thermostat | GSIstore