Lochinvar & A.O. Smith 100109290 Pilot Assembly

As a veteran tech, you know that a flickering or non-responsive burner often traces back to a compromised pilot circuit. The Lochinvar & A.O. Smith 100109290 Pilot Assembly is a critical OEM component specifically engineered for FVIR (Flammable Vapor Ignition Resistant) natural gas water heaters. Featuring a 180-degree configuration, this assembly ensures the pilot flame is perfectly oriented for reliable main burner ignition and precise thermocouple voltage generation. Rated for high-temperature environments up to 180°C, this Natural Gas pilot kit is built to withstand the rigors of sealed combustion chambers, preventing the premature fatigue often seen in low-grade aftermarket alternatives.

When dealing with Lochinvar 9003531005 or A.O. Smith 100109290 replacements, this drop-in FV pilot assembly restores the integrity of the safety pilot system. It is vital for maintaining the millivolt signal required by the gas control valve to stay open. High-altitude rated and designed for a direct OEM fit, this part eliminates the need for field modifications, ensuring you get the water heater repair done right the first time without call-backs for pilot outages or thermocouple failures.

• Direct OEM Replacement: Fully compatible with Lochinvar and A.O. Smith part numbers 100109290 and 9003531005 for seamless integration.
• High-Temperature Durability: Engineered for 180° Celsius operation, ensuring stability inside FVIR combustion chambers.
• Precision Ignition: The 180-degree pilot tube orientation provides a consistent flame path for efficient main burner hand-off.
• Complete Assembly: Includes the necessary thermocouple and pilot tube components to refresh the entire ignition circuit.

• Why is my pilot light not staying lit on my A.O. Smith heater? Often, a soot-covered or hardware-fatigued thermocouple in the pilot assembly fails to send a sufficient signal to the gas valve. Replacing the 100109290 assembly is the standard solution.
• Is this part compatible with high-altitude models? Yes, this specific 180 DEG C pilot assembly is designed for high-altitude Natural Gas units.
• Does this include the door gasket? This kit focuses on the pilot assembly hardware; it is always best practice to inspect your manifold door gasket during installation to maintain the FVIR seal.

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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.