Lochinvar & A.O. Smith 100274592 T-Stat The 3-inch insert is specific

The 3-inch insert is specific to the heat exchanger geometry

Beyond thermal fatigue

It is a vital furnace spark electrode that minimizes ignition delays and prevents lockout codes caused by incomplete combustion cycles

Proper installation ensures the motor exits the start winding cycle efficiently

it should never be bypassed

Lochinvar & A.O. Smith 100274592 T-Stat The 3-inch insert is specificThe Lochinvar & A. O. Smith 100274592 Lower T Stat is a critical OEM replacement part designed for high performance residential electric water heaters. As a direct replacement for the Lochinvar TST1120 and A. O. Smith 100077850, this lower thermostat provides precise thermal sensing to maintain consistent water temperatures and system efficiency. Engineered for durability in high demand environments, it is compatible with a wide range of models,