Gas Water Heater Thermopile Assembly 21 Inch Replacement Part 100112328 For Older Tanks Not For C3 FVIR Heaters No Fuss Install Durable Build Red Color Coding For Quick Identification

21-Inch Thermopile Assembly for Gas Water Heaters 100112328
✔️ 21-inch gas water heater thermopile, not for C3 FVIR units

This 21-inch thermopile assembly is a replacement part for gas-fired residential water heaters. It provides flame sensing and safety ignition, helping water heaters ignite reliably in standard vented systems. This part is commonly used in older or service scenarios to restore proper flame monitoring.

✅ 21-inch gas water heater thermopile assembly
✅ Not for use on C3 FVIR heaters
✅ Color: Red

💡 What is a thermopile assembly for a gas water heater and why is it important?

In simple terms, it detects flame and signals the gas control to keep the burner lit, improving safety and ignition reliability.

- Handy for older or failing units
- Supports safe ignition and flame sensing
- Works with standard 21-inch thermopile layouts
- Easy DIY replacement with common tools