Description
The Rheem-Ruud SP10100B is a 23″ thermopile designed as a direct OEM replacement for compatible Rheem and Ruud gas appliances. Thermopiles generate a millivolt DC voltage from the heat of a standing pilot flame, providing the self-contained electrical power needed to operate gas valves and controls without relying on external line voltage — making them essential components in millivolt heating systems such as gas fireplaces, water heaters, and boilers.
Key Features
- OEM Rheem-Ruud replacement thermopile — ensures proper fit and function
- 23″ lead length for flexible routing and installation
- Generates millivolt DC output from standing pilot heat
- Designed for use in millivolt gas control systems
- Replaces worn or failed thermopiles to restore reliable appliance operation
Application
- Compatible with select Rheem and Ruud gas appliances requiring a 23″ thermopile
- Suitable for gas water heaters, boilers, and other millivolt-controlled heating equipment
Why Replace Your Thermopile?
A failing thermopile is a common cause of pilot-related ignition issues and gas valve malfunctions. Using a genuine Rheem-Ruud OEM part like the SP10100B ensures the correct millivolt output and lead length, restoring safe and dependable operation to your heating system.







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