Lochinvar & A.O. Smith 100110039 Thermostat

The Lochinvar & A.O. Smith 100110039 Thermostat is a technician-grade component designed for precise temperature regulation in commercial and residential electric water heaters. This lower thermostat assembly features a single-pole, wire-in configuration with a 2-screw terminal design, ensuring a secure electrical connection to the heating element. It operates within a standard 90°F to 150°F temperature range, allowing for accurate set-point adjustments to meet specific site requirements. As a direct replacement for the 9004714115, this unit maintains system compliance and thermal stability in high-demand environments. Its robust construction is engineered to withstand the frequent cycling common in Lochinvar ECT52 models and various A.O. Smith boiler series, providing professional contractors with a reliable solution for restoring hot water delivery and system efficiency.

• Universal Compatibility: Serves as a direct OEM replacement for A.O. Smith, Lochinvar, and State water heater models, specifically optimized for ECT52 series units.
• Precise Thermal Management: Features a versatile 90-150 degree Fahrenheit adjustable range for customized hot water output and energy savings.
• Simplified Installation: The 2-screw terminal layout facilitates quick field wiring, reducing labor time during emergency service calls.
• Lead-Free Compliant: Certified for use in potable water systems, meeting all federal safe drinking water requirements.

• Which models are compatible with this thermostat? This part is specifically designed for A.O. Smith and Lochinvar electric water heaters, typically used as the lower thermostat in dual-element systems like the ECT52.
• Can this replace the 9004714115? Yes, the 100110039 is the official engineering update and direct substitute for the legacy 9004714115 part number.
• What is the primary function of a lower thermostat? In a standard residential or commercial tank, the lower thermostat controls the bottom element to maintain the overall tank temperature after the upper thermostat has satisfied the initial demand.

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.