Lower Electric Thermostat for Marathon Water Heaters

Rheem SP210239 Lower Electric Thermostat – Direct Replacement for Marathon Water Heaters

The Rheem SP210239 is a factory-specified lower electric thermostat designed for use in select Marathon series water heaters. Engineered for consistent thermal regulation, this thermostat supports efficient water temperature management across a standard range of residential applications. Its precision controls help maintain proper heater function while contributing to system reliability and overall performance.

Product Highlights

• Designed for Marathon Models – Tailored for compatibility with Rheem’s Marathon electric water heater units.
• Temperature Setpoint Range – Adjustable from 90°F to 150°F to suit various residential hot water requirements.
• OEM Specification – Built to original equipment standards for direct replacement and reliable performance.
• Rugged Construction – Manufactured for long-term use in electric water heating systems.
• Secure Mounting – Designed for stable installation within the lower thermostat cavity of compatible heaters.

Specifications

• Manufacturer: Rheem
• Model Number: SP210239
• Application: Lower thermostat for electric water heaters
• Temperature Range: 90°F – 150°F
• Use Case: Residential electric models (Marathon series)
• Warranty: Limited manufacturer warranty

Installation Notes

Installation of the SP210239 should be performed by qualified personnel familiar with electric water heater servicing and local code compliance. This thermostat installs into the lower section of the tank and connects via standard terminal fittings. Always verify unit compatibility and ensure the power supply is properly isolated before beginning replacement.

Contractor Considerations

The SP210239 is a dependable option for field replacement of failed or degraded lower thermostats in Marathon electric models. Suitable for scheduled maintenance or service calls involving fluctuating water temperatures or element cycling issues. Stocking this component ensures quick turnaround for electric water heater repairs.