Anode Warranty Kit, Pro Plus Upgrade

Rheem SP20866 Anode Rod Replacement & Limited Warranty Extension Kit

The Rheem SP20866 is an OEM anode rod kit designed to extend corrosion protection and support long-term tank integrity in compatible Rheem residential water heaters. In addition to replacing the original anode, this kit is part of Rheem’s extended protection program and qualifies the tank for an additional four years of limited warranty coverage when installed according to manufacturer guidelines and registered accordingly.

Application Overview

This kit is used for scheduled maintenance or service restoration of water heaters where sacrificial anode degradation has occurred. The included magnesium anode rod mitigates internal tank corrosion, a critical factor in preserving the lifespan of glass-lined storage tanks under continuous hot water operation. The warranty extension is valid only for water heaters still within their original warranty period at the time of kit registration.

Kit Contents and Technical Specifications

• Component: Sacrificial magnesium anode rod
• Connection Type: Threaded 3/4" NPT
• Rod Length: Standard length for vertical Rheem tank models
• Warranty Extension: Additional 4 years (registration required with Rheem)
• Compatibility: Fits select Rheem, Ruud, and Richmond tank-style water heaters (consult model-specific documentation)
• Installation Method: Direct-threaded into tank’s designated anode port

Professional Use Considerations

• Corrosion Control: Replacing a depleted anode is essential to preserving the internal tank lining and preventing premature failure.
• Routine Maintenance: Rheem recommends periodic inspection of the anode rod—typically every 2 to 4 years—depending on local water chemistry and usage levels.
• Installation Access: Requires clearance at the top of the tank and appropriate torque tools for proper removal/installation.

Contractor Notes

The SP20866 is suitable for routine service or part of a broader tank inspection program. Ensure thread sealant or Teflon tape is used during installation. Always confirm the existing anode type and thread size before replacement. For warranty extension to apply, installers must adhere to Rheem’s registration and documentation requirements post-installation.

Recommended Installation Guidelines

• Isolate electrical power and water supply to the water heater prior to servicing.
• Use a 1-1/16" socket wrench to remove the old anode.
• Install new anode with thread sealant and torque appropriately to avoid leakage or overtightening.
• Verify no leaks under normal operating pressure.