Lochinvar & A.O. Smith 100112456 Ignitor

Protect your client's uptime with the Lochinvar & A.O. Smith 100112456 Ignitor, a critical OEM component designed for high-efficiency commercial and residential gas appliances. This hot surface ignitor is engineered specifically for compatibility with Lochinvar Knight and A.O. Smith water heaters, ensuring precise timing and thermal output during the combustion cycle. As a seasoned technician, you know that using generic equivalents can lead to resistance mismatches and premature ignition failure. The 100112456 provides the exact voltage-to-temperature ratio required to safely light the burner without stressing the ignition control board. This assembly includes the necessary ignitor gasket to maintain a hermetic seal, preventing flue gas leakage and maintaining proper combustion chamber pressure. Whether you are performing routine maintenance or troubleshooting a "flame fail" lockout, this genuine replacement part eliminates the guesswork of fitment. It replaces retired part numbers such as 9008037005, making it a versatile addition to your service van for a wide range of HVAC repair calls involving Lochinvar boilers and commercial water heating systems.

• Precise OEM Specifications: Matches the exact resistance requirements for Lochinvar and A.O. Smith ignition modules to prevent nuisance lockouts.
• Durable Construction: Built to withstand the rapid thermal cycling typical of high-demand commercial water heaters.
• Total Seal Integrity: Includes a factory-grade ignitor gasket to ensure safe operation and prevent dangerous CO leakage during the ignition sequence.
• Direct Cross-Compatibility: Confirmed replacement for part number 9008037005, ensuring a perfect drop-in fit for supported models.

What are the signs that a 100112456 ignitor needs replacement?
Technicians typically look for visible cracks in the ceramic or silicon element, or "open" resistance readings when testing with a multimeter. If the control board initiates the call for heat but the ignitor fails to glow, a replacement is usually necessary.

Does this unit include the flame sensor?
This part is specifically the hot surface ignitor and gasket assembly. While some systems use the ignitor for flame rectification, verify if your specific Lochinvar boiler requires a separate flame rod for sensing.

Why is an OEM ignitor preferred over universal silicon carbide versions?
Universal ignitors often have different amp draws that can damage sensitive Lochinvar ignition control boards. Using the 100112456 OEM part ensures long-term reliability and protects the broader system electronics.

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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.