Lochinvar 100110951 Upper Thermostat Probe ECO Gas Water Heater Replacement Part

The Lochinvar 100110951 is a genuine OEM Upper Thermostat Probe with ECO (Energy Cut-Off) function, designed as a direct replacement part for Lochinvar and A.O. Smith commercial gas water heaters. This precision temperature sensing probe monitors water temperature at the upper portion of the tank and works in conjunction with the ECO safety limit to regulate heating and prevent overheating.

Key Features:

• Genuine OEM replacement part — ensures correct fit and reliable performance
• Combines upper thermostat probe and ECO (Energy Cut-Off) limit switch in one assembly
• Monitors upper tank water temperature to control burner operation
• ECO safety function cuts off energy supply if water temperature reaches unsafe levels
• Built to original manufacturer specifications for long service life
• UPC: 020363155087

Compatible Water Heater Series:

• BTN-275A Series
• BTN-310A Series
• BTN-366A Series
• BTN-400A Series
• BTR-500A Series

This part is also cross-referenced and used across the A.O. Smith and Lochinvar commercial gas water heater product lines. Replacing a faulty upper thermostat probe or ECO assembly restores proper temperature regulation and safety shutoff function, helping maintain consistent water heating performance and protecting the unit from thermal damage.