The Rheem AP14366B Gas Control (Thermostat) is specifically designed for liquid propane (LP) systems, featuring a resettable ECO for added safety. This thermostat effectively manages gas flow to ensure optimal heating performance in Rheem water heaters. Built with high-quality materials, it adheres to industry standards for reliability and safety. Its compact design allows for straightforward installation and compatibility with various Rheem models. With precise temperature regulation, this gas control unit enhances energy efficiency and provides users with peace of mind.