21 Inch Thermopile For Water Heater 100112328 Replacement Sensor Easy Install With 750 Millivolt Thermocouple Compatibility For Reliance Whirlpool AO Smith Kenmore American Water Heater Replace Models 6911197 9007872005 100094024

21-Inch Water Heater Thermopile Replacement Sensor
✔️ 750 mV output; fits Reliance, Whirlpool, A.O. Smith

This 21-inch thermopile assembly is a direct replacement part for gas water heaters. It senses the flame and regulates gas flow to ensure safe operation and consistent heating. Compatible with Reliance, Whirlpool, A.O. Smith, Kenmore, and American Water Heater models. Pack of 1 unit.

✅ 21-inch thermopile assembly for water heater safety sensor
✅ Replaces old parts 6911197, 9007872005, 100094024
✅ Compatible with Reliance, Whirlpool, A.O. Smith, Kenmore, American Water Heater models
✅ Easy 15-30 minute DIY replacement with basic tools
✅ Note: does not fit Reliance C3 FAIR and C3 FVIR units

💡 What is a water heater thermocouple used for and when should you replace it?

Water heater thermocouples monitor the flame and control gas flow; replacement is a handy fix that restores heating and safety. - A handy device that helps the heater restart quickly after a flame loss - Replacing can save a service call and downtime - Works with 750 mV thermocouple systems across major brands - Typical DIY replacement takes 15-30 minutes with basic tools