Rheem rtg20319p Exhaust Thermistor Kit

Product Description

The RHEEM rtg20319p is a factory-supplied exhaust thermistor kit designed for use in select Rheem tankless gas water heaters. The kit includes an O-ring and mounting screw for a complete service installation. This sensor monitors flue gas temperatures and delivers real-time data to the unit's control board, triggering over-temperature shutdowns when thermal thresholds are exceeded. Licensed plumbers and HVAC technicians performing warranty or out-of-warranty service on Rheem tankless units will recognize this as the OEM-specified replacement component for restoring proper thermal protection functionality.

This thermistor kit is intended for residential tankless gas water heater applications where flue exhaust temperature monitoring is a required safety function. It fits into the exhaust pathway and connects to the main control board, allowing the system to maintain compliance with thermal protection parameters. Technicians servicing Rheem tankless units will find this kit provides all hardware needed to complete the sensor swap without sourcing secondary fasteners or seals.

Key Features

• OEM factory-supplied exhaust thermistor assembly for accurate thermal sensing
• Monitors flue gas temperatures to protect against over-temperature conditions
• Includes O-ring and mounting screw for a self-contained installation
• Interfaces directly with the unit control board for real-time safety shutoff capability
• Supports compliance with thermal protection parameters required by Rheem tankless systems

Compatibility

Designed as an OEM-style replacement exhaust thermistor for select Rheem tankless gas water heater models. Refer to the unit's service manual or Rheem parts documentation to confirm fitment for a specific model before installation.

Installation Notes

Installation should be performed by a licensed plumber or qualified HVAC technician familiar with tankless gas water heater service procedures. Before beginning, shut off the gas supply and disconnect electrical power to the unit. Ensure the exhaust pathway has cooled to ambient temperature before handling the thermistor assembly. Replace the included O-ring during installation and do not reuse the original sealing hardware.