Lochinvar & A.O. Smith 100110071 Thermostat

The Lochinvar and A.O. Smith 100110071 Thermostat is a critical OEM immersion temperature control replacement engineered for high-efficiency commercial water heaters and boilers. Designed for precision thermal regulation, this surface-mounted thermostat ensures accurate sensing of tank temperatures to prevent overheating and maintain consistent system performance. It functions as a direct replacement for legacy part numbers such as 9004555105 and is compatible with a wide range of A.O. Smith, Lochinvar, and State Water Heater models. This commercial water heater thermostat features standard terminal configurations for seamless integration into existing HVAC control circuits, making it a reliable choice for field repairs. When troubleshooting water heater temperature swings or lockout conditions in commercial systems, verifying the calibration of this fixed-limit control is essential. Proper installation ensures the unit maintains optimal setpoints, protecting the heat exchanger from excessive thermal stress and ensuring operational safety in high-demand domestic hot water applications.

Key Benefits

• OEM Precision: Genuine A.O. Smith 100110071 component ensures exact fitment and electrical compatibility for commercial boiler controls.
• Thermal Stability: High-sensitivity sensing element reduces temperature differential to improve hot water recovery rates.
• Rugged Construction: Built to withstand constant cycling in demanding mechanical room environments.
• Streamlined Installation: Compact design allows for quick replacement in tight heater jackets, minimizing downtime for HVAC contractors.

Common Questions

What are the signs that this thermostat requires replacement?
Persistent high-limit tripping, failure to initiate a heating cycle, or significant deviation from the set temperature usually indicates the bimetal switch or sensing surface has degraded.

Is this part compatible with residential water heaters?
This 100110071 model is primarily specified for commercial-grade water heaters and boilers. Always verify the part number against the specific unit data plate before installation.

Does this thermostat include the mounting bracket?
This is the thermostat assembly itself; it is designed to mount securely within the existing bracketry of compatible Lochinvar and A.O. Smith chassis.

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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.