Lochinvar & A.O. Smith 100108424 Thermostat

The Lochinvar & A.O. Smith 100108424 Lower Thermostat is a technician-grade OEM replacement part designed specifically for electric water heaters requiring precise thermal regulation. This WH9-6 single element heater thermostat features an integrated Energy Cut-Off (E.C.O.) high-limit switch, providing critical safety by disconnecting power if tank temperatures exceed safe operational parameters. Engineered as a surface mount control, it ensures direct thermal contact for accurate sensing and response. Whether you are performing a routine water heater repair or addressing a complete heating failure, utilizing a genuine A.O. Smith thermostat maintains the original equipment’s performance standards. This unit includes the protective terminal cover, ensuring a secure and professional installation that meets NEC requirements for HVACR control components. Note that this surface mount thermostat is model-specific and should be verified against the appliance's serial number to ensure exact electric water heater compatibility and electrical rating alignment.

• OEM Precision: Genuine Lochinvar & A.O. Smith 100108424 ensures exact fitment and resistance values for reliable temperature cycling.
• Enhanced Safety: Built-in E.C.O. high-limit limit prevents overheating by automatically tripping if the water reaches a dangerous temperature.
• Complete Assembly: Comes with the WH9-6 thermostat cover to protect electrical terminals from dust and accidental contact.
• Field Reliability: Designed for 120/240V applications, providing stable water heater temperature control in residential and commercial settings.
• Ease of Service: Standard footprint allows for rapid lower thermostat replacement during emergency service calls.

• Is the 100108424 thermostat compatible with non-Lochinvar brands? While primarily used in Lochinvar and A.O. Smith units, it may fit other brands using the WH9-6 footprint; however, always verify the specific part number before installation.
• What does the '6' in WH9-6 signify? The suffix typically denotes specific configuration details or lead wire lengths; using the 100108424 OEM part ensures you match the original factory specifications exactly.
• Can this be used on a top-entry water heater? This is designated as a lower thermostat. If your unit requires a dual-element setup, ensure the upper thermostat is also inspected for proper HVACR system operation.

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.