Lochinvar & A.O. Smith 100208373 Pilot Assembly

The Lochinvar & A.O. Smith 100208373 Pilot Assembly is a critical OEM component designed for high-efficiency propane (LP) systems. As a direct replacement pilot assembly, this part is technically identical to the Lochinvar PLT2909 and serves as a vital intermittent ignition source for several light-duty commercial and residential water heaters. Engineered to maintain precise flame sensing and reliable pilot ignition, the 100208373 ensures the safety and performance of atmospheric and power-vented units such as the Lochinvar Copper-Fin (CB/CW) and Knight series. This assembly includes the electrode, bracket, and pilot tube necessary for a complete field restoration. For contractors managing HVAC repair parts, ensuring this LP pilot assembly is free of carbon buildup and oxidation is essential to prevent "Ignition Failure" or "No Hot Water" fault codes. This genuine OEM part provides the exact dimensions and millivolt output required for seamless integration with the existing gas valve and control board, maintaining factory-spec heating system maintenance standards.

• OEM Compatibility: Exact replacement for Lochinvar PLT2909 and A.O. Smith 100208373, eliminating the need for field modifications.
• Optimized for Propane: Specifically calibrated for LP Pilot Assembly applications to ensure stable flame patterns and efficient fuel consumption.
• Reliable Ignition: Features high-grade electrodes designed for consistent spark ignition and durable flame sensing.
• Robust Construction: Built to withstand the high-temperature environment of the combustion chamber, reducing the frequency of service calls.

Is the 100208373 compatible with natural gas units?
No, this assembly is specifically designed and orificed for propane (LP) systems. Using it in a natural gas application will result in improper combustion and potential safety hazards.

Will this part replace the PLT2909 older model?
Yes, the 100208373 is the official manufacturer-designated replacement for PLT2909 and provides identical technical performance.

What are the signs that a pilot assembly needs replacement?
Common indicators include a cracked ceramic insulator on the spark electrode, a weak or orange pilot flame, or consistent failures to sense flame (resulting in the system locking out shortly after ignition).

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.