OEM igniter assembly for A.O. Smith BTN Series and Lochinvar commercial gas water heaters and boilers. Combines hot surface ignition with integrated flame sensor for reliable burner light-off and flame detection. Designed for models 120–400/A. Direct replacement for legacy part 9004606205.
A.O. Smith 100109978 Igniter Assembly Hot Surface
A.O. Smith
$113.95
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A.O. Smith
A.O. Smith 100109978 Igniter Assembly Hot Surface
- SKU:
- 100109978
- Product Type:
- Igniter Assembly
- Subcategory:
- Hot Surface Igniter with Flame Sensor
- Application:
- Commercial
- System Type:
- Boiler, Water Heater
- Installation Type:
- OEM Replacement
- Fuel Type:
- Natural Gas
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