Rheem-Ruud AP17231 L180F High Limit Upper Thermostat Switch

The Rheem-Ruud AP17231 is a factory OEM high limit upper thermostat designed for residential and light commercial heating equipment. This L180F-rated limit switch provides critical safety protection by automatically shutting off the heating element when temperatures reach unsafe levels, typically at 180°F.

Key Features:

• Genuine Rheem-Ruud OEM replacement part ensures perfect fit and reliable performance
• L180F temperature rating provides precision high-limit control
• Automatic reset design restores operation once temperature returns to safe levels
• Direct replacement for worn or failed upper limit thermostats
• Designed for electric furnaces, air handlers, and heat pump air handlers

This upper limit thermostat is a critical safety component that protects your heating system from overheating conditions that could damage internal components or create hazardous situations. When the limit switch detects excessive temperature, it opens the electrical circuit to the heating elements until the system cools to a safe operating range. Professional installation is recommended to ensure proper electrical connections and system safety.