Description
Rheem-Ruud SP11798B Thermostat & High Limit Control
The Rheem-Ruud SP11798B is a genuine OEM combination thermostat and high limit control designed as a direct replacement for compatible Rheem and Ruud appliances. This dual-function component provides precise temperature regulation during normal operation while simultaneously protecting the system from dangerous overtemperature conditions — ensuring safe, efficient, and reliable performance.
Key Features
- Genuine Rheem-Ruud OEM replacement part for assured fit and compatibility
- Dual-function design combines operating thermostat and high limit protection in a single component
- High limit function automatically shuts down the appliance if unsafe temperatures are detected
- Thermostat function maintains consistent set-point temperature for optimal system efficiency
- Direct drop-in replacement minimizes installation time and labor
- Engineered to OEM specifications for long-lasting, dependable service
Application
- Compatible with select Rheem and Ruud appliances requiring OEM thermostat and high limit replacement
- Suitable for use in water heaters and related HVAC appliance applications
- Always verify compatibility with your specific model number before installation
Why Choose the SP11798B?
Using genuine Rheem-Ruud OEM parts like the SP11798B ensures your equipment operates within designed safety and performance parameters. Aftermarket substitutes may not meet the precise tolerances required by Rheem-Ruud systems. Trust the OEM part for warranty compliance, peak efficiency, and peace of mind.







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