Lochinvar & A.O. Smith 100110279 Gas Thermostat

The Lochinvar & A.O. Smith 100110279 Gas Thermostat is a critical field replacement component designed for precise temperature regulation in high-efficiency LP gas water heaters. This Robertshaw gas valve assembly features an integrated wire harness and is engineered to maintain tight thermal differentials for consistent boiler or water heater performance. Built for durability in commercial and residential HVACR applications, the 100110279 liquid propane thermostat manages gas flow via an internal regulator, ensuring the burner assembly operates within specific BTU parameters. When diagnosing ignition failures or erratic temperature cycling in A.O. Smith gas valves, this OEM replacement provides the necessary millivolt control and high-limit safety integration required to restore system integrity. Professional installation is recommended to ensure proper seating of the immersion probe and to verify manifold pressure post-installation, maintaining the combustion efficiency of the Lochinvar heating system.

Key Benefits for Contractors

• OEM Compatibility: Direct drop-in replacement for A.O. Smith and Lochinvar part number 100110279, ensuring correct thread pitch and harness connectivity.
• Integrated Harness: Includes factory-terminated wiring harness to reduce installation time and eliminate field-crimping errors.
• LP Gas Calibration: Specifically calibrated for Liquid Propane (LP) systems, providing accurate pressure regulation for stable flame patterns.
• Robust Construction: Designed for high-cycle environments, minimizing call-backs related to thermal overshoot or pilot dropout.

Common Questions

Is this gas thermostat compatible with Natural Gas units?
No, the 100110279 is specifically configured for LP gas (Liquid Propane). Using this on a natural gas system will result in improper combustion and safety hazards.

Does this unit include the thermal well or probe?
This Robertshaw gas control valve features an integrated immersion probe designed to seat directly into the tank for real-time temperature sensing.

Can I use this for both Lochinvar and A.O. Smith models?
Yes, this is a cross-functional OEM part used across several Lochinvar, A.O. Smith, and State Industries water heater platforms that require this specific logic and harness configuration.

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.