{"product_id":"rheem-rtg20319de-thermistor-kit-tankless-water-heater","title":"Rheem rtg20319de Thermistor Kit Tankless Water Heater","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe RHEEM rtg20319de is a replacement thermistor kit designed for monitoring heat exchanger outlet temperature in Rheem tankless gas water heater systems. The kit includes a thermistor temperature sensor, an installation clip, and an O-ring for a proper seal at the sensor port. The thermistor delivers real-time temperature feedback to the control board, enabling burner modulation that keeps outlet water at the set point while protecting the heat exchanger from thermal stress. Licensed plumbers and HVAC technicians performing tankless water heater service will find this kit contains the necessary components for a complete sensor replacement in a single package.\u003c\/p\u003e\u003cp\u003eThis kit is intended for use in Rheem tankless gas water heater applications where the heat exchanger outlet temperature sensor has failed or is producing fault codes related to temperature sensing. It is suited for both residential and light commercial tankless gas water heater service scenarios. The included O-ring and clip ensure the replacement meets original assembly specifications without requiring additional hardware sourcing on the job.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eComplete kit includes thermistor sensor, mounting clip, and O-ring for a full sensor replacement\u003c\/li\u003e\n\u003cli\u003eMonitors heat exchanger outlet temperature for accurate burner modulation and set point control\u003c\/li\u003e\n\u003cli\u003eO-ring included to maintain a proper seal at the sensor installation point\u003c\/li\u003e\n\u003cli\u003eOEM replacement part designed to interface directly with the Rheem tankless control board\u003c\/li\u003e\n\u003cli\u003eAddresses temperature-sensing fault codes in Rheem tankless gas water heater systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement thermistor kit for Rheem tankless gas water heater systems requiring heat exchanger outlet temperature sensor service.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a licensed plumber or qualified HVAC technician. Shut off the gas supply and cold water inlet, and relieve system pressure before removing the existing sensor. Follow all applicable local plumbing codes and manufacturer service documentation when replacing thermistor components. Do not over-tighten the sensor fitting; use the supplied O-ring to achieve a proper seal without mechanical distortion.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Type\u003c\/strong\u003e: Water Heater Parts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSub Type\u003c\/strong\u003e: O-Ring Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Length\u003c\/strong\u003e: 10 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Width\u003c\/strong\u003e: 5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Height\u003c\/strong\u003e: 5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Weight\u003c\/strong\u003e: 5 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: RHEEM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: rtg20319de\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RHEEM","offers":[{"title":"Default Title","offer_id":51620945527090,"sku":"RTG20319DE","price":31.07,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f4102879f78a341676f19e3c11a595ae.jpg?v=1787347975","url":"https:\/\/voomisupply.com\/products\/rheem-rtg20319de-thermistor-kit-tankless-water-heater","provider":"Voomi Supply","version":"1.0","type":"link"}