Lochinvar & A.O. Smith 100109859 Ignitor
The Lochinvar & A.O. Smith 100109859 Ignitor is a high-performance silicon carbide hot surface ignitor engineered specifically for technical compatibility with premium Lochinvar Knight and A.O. Smith water heaters. As a critical OEM replacement part, it ensures rapid thermal response to bridge the gap between the call for heat and burner ignition, maintaining the tight combustion tolerances required by high-efficiency condensing boilers. This 100109859 gas ignitor is the official updated version for SKU 9004448105, featuring a robust filament design optimized for the negative-pressure gas valves found in modern WHB and FTXL boiler models. For field technicians, this unit provides a precise fit within the burner assembly, eliminating the ignition delay and "flame failure" error codes often triggered by degraded aftermarket elements. Professionals should always verify the Lochinvar ignitor part number against the specified system serial number to ensure correct resistance levels and dependable pilotless ignition.
Key Benefits for HVACR Contractors
- OEM Precision: Direct A.O. Smith factory part ensures electrical resistance matches the control board's expected signal.
- Rapid Carbon Silicon Element: Reaches optimal ignition temperature in seconds to prevent unburned gas buildup in the heat exchanger.
- Compatibility: Successor to 9004448105, supporting a broad range of Lochinvar boilers and commercial water heaters.
- System Protection: Reliable ignition cycles reduce mechanical stress on the blower and gas valve components.
Common Technical Questions
- Can I test this ignitor using a multimeter? Yes, veteran techs should check for continuity and specific ohms resistance. If the circuit is open or resistance is outside factory specs, the element is cracked and requires replacement.
- What causes these ignitors to fail prematurely? Most failures result from handle oils on the element, recirculating flue gases, or poor combustion settings that lead to carbon buildup.
- Is this compatible with natural gas and propane units? Yes, the 100109859 hot surface ignitor is rated for both fuel types in supported high-efficiency models.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Lochinvar & A.O. Smith 100109859 Ignitor
The Lochinvar & A.O. Smith 100109859 Ignitor is a high-performance silicon carbide hot surface ignitor engineered specifically for technical compatibility with premium Lochinvar Knight and A.O. Smith water heaters. As a critical OEM replacement part, it ensures rapid thermal response to bridge the gap between the call for heat and burner ignition, maintaining the tight combustion tolerances required by high-efficiency condensing boilers. This 100109859 gas ignitor is the official updated version for SKU 9004448105, featuring a robust filament design optimized for the negative-pressure gas valves found in modern WHB and FTXL boiler models. For field technicians, this unit provides a precise fit within the burner assembly, eliminating the ignition delay and "flame failure" error codes often triggered by degraded aftermarket elements. Professionals should always verify the Lochinvar ignitor part number against the specified system serial number to ensure correct resistance levels and dependable pilotless ignition.
Key Benefits for HVACR Contractors
- OEM Precision: Direct A.O. Smith factory part ensures electrical resistance matches the control board's expected signal.
- Rapid Carbon Silicon Element: Reaches optimal ignition temperature in seconds to prevent unburned gas buildup in the heat exchanger.
- Compatibility: Successor to 9004448105, supporting a broad range of Lochinvar boilers and commercial water heaters.
- System Protection: Reliable ignition cycles reduce mechanical stress on the blower and gas valve components.
Common Technical Questions
- Can I test this ignitor using a multimeter? Yes, veteran techs should check for continuity and specific ohms resistance. If the circuit is open or resistance is outside factory specs, the element is cracked and requires replacement.
- What causes these ignitors to fail prematurely? Most failures result from handle oils on the element, recirculating flue gases, or poor combustion settings that lead to carbon buildup.
- Is this compatible with natural gas and propane units? Yes, the 100109859 hot surface ignitor is rated for both fuel types in supported high-efficiency models.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
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Shipping & Returns
Description
The Lochinvar & A.O. Smith 100109859 Ignitor is a high-performance silicon carbide hot surface ignitor engineered specifically for technical compatibility with premium Lochinvar Knight and A.O. Smith water heaters. As a critical OEM replacement part, it ensures rapid thermal response to bridge the gap between the call for heat and burner ignition, maintaining the tight combustion tolerances required by high-efficiency condensing boilers. This 100109859 gas ignitor is the official updated version for SKU 9004448105, featuring a robust filament design optimized for the negative-pressure gas valves found in modern WHB and FTXL boiler models. For field technicians, this unit provides a precise fit within the burner assembly, eliminating the ignition delay and "flame failure" error codes often triggered by degraded aftermarket elements. Professionals should always verify the Lochinvar ignitor part number against the specified system serial number to ensure correct resistance levels and dependable pilotless ignition.
Key Benefits for HVACR Contractors
- OEM Precision: Direct A.O. Smith factory part ensures electrical resistance matches the control board's expected signal.
- Rapid Carbon Silicon Element: Reaches optimal ignition temperature in seconds to prevent unburned gas buildup in the heat exchanger.
- Compatibility: Successor to 9004448105, supporting a broad range of Lochinvar boilers and commercial water heaters.
- System Protection: Reliable ignition cycles reduce mechanical stress on the blower and gas valve components.
Common Technical Questions
- Can I test this ignitor using a multimeter? Yes, veteran techs should check for continuity and specific ohms resistance. If the circuit is open or resistance is outside factory specs, the element is cracked and requires replacement.
- What causes these ignitors to fail prematurely? Most failures result from handle oils on the element, recirculating flue gases, or poor combustion settings that lead to carbon buildup.
- Is this compatible with natural gas and propane units? Yes, the 100109859 hot surface ignitor is rated for both fuel types in supported high-efficiency models.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
