Rheem rtg20212bd Igniter with Gasket Tankless Water Heater

Product Description

The RHEEM rtg20212bd is a factory-authorized igniter assembly with gasket designed for tankless gas water heater applications. This component delivers the high-voltage spark required to initiate burner ignition during the unit start-up sequence. It ships as a complete assembly — igniter and gasket included — making it a direct-fit replacement that restores safe, reliable ignition function. Weighing 0.08 pounds and measuring 3.2 inches long by 3.05 inches wide by 2 inches tall, this compact assembly is sized to fit within the tight clearances typical of tankless water heater combustion chambers. Installation is suited to licensed plumbers and gas service technicians.

This igniter assembly is intended for use in residential and light-commercial tankless gas water heater systems. It is engineered for compatibility with specific Rheem, Ruud, and Richmond tankless gas water heater models. The gasket included in the assembly ensures a proper combustion-chamber seal, which is essential for safe burner operation and compliance with manufacturer specifications. Technicians replacing a failed or degraded igniter will find this assembly a direct substitute for the original factory component.

Key Features

• Factory-authorized igniter and gasket sold as a complete assembly
• Provides high-voltage spark for reliable burner ignition in tankless gas units
• Direct-fit design for specific Rheem, Ruud, and Richmond tankless water heater models
• Compact form factor: 3.2 inches x 3.05 inches x 2 inches
• Lightweight at 0.08 pounds for easy handling during installation
• Backed by a 1-year manufacturer warranty

Compatibility

Engineered for compatibility with specific Rheem, Ruud, and Richmond tankless gas water heater models. Consult the unit service manual or Rheem technical documentation to confirm fitment for the specific model being serviced.

Installation Notes

Installation should be performed by a licensed plumber or qualified gas service technician in accordance with local codes and the appliance manufacturer's service documentation. Shut off the gas supply and disconnect power to the unit before removing the existing igniter assembly. Handle the igniter electrode carefully to avoid damage to the ceramic insulator. Verify gasket seating before restoring gas supply and power to the unit.