Lochinvar & A.O. Smith 100326985 Ignitor

The Lochinvar & A.O. Smith 100326985 Ignitor is the genuine OEM replacement for the legacy 100165860 and PLT1151 ignition assemblies. Designed for high-efficiency gas-fired heating systems, including Lochinvar Knight boilers and Armor water heaters, this hot surface ignitor features a robust silicon carbide or nitride construction to withstand the high-temperature environment of the burner assembly. This kit includes the necessary gasket to ensure a proper airtight seal, preventing incomplete combustion and protecting the combustion chamber integrity.

For field technicians, the 100326985 serves as a critical HVAC replacement part to resolve "flame failure" lockouts and ignition failure codes. This hot surface igniter is engineered for specific resistance values to match the smart system control logic of modern condensing boilers. Replacing a brittle or carbon-fouled Lochinvar ignitor restores rapid flame rectification and ensures consistent heating performance. Always handle the ceramic base carefully and avoid touching the element to prevent premature failure from skin oils.

• Direct OEM Match: Precision-engineered as the official replacement for 100165860 and 100165860K.
• Complete Assembly: Includes the ignitor gasket (PLT1151K) for a leak-proof combustion chamber seal.
• Optimized Ignition: High-grade material provides rapid heating for reliable gas burner ignition.
• Broad Compatibility: Fits various Lochinvar and A.O. Smith residential and commercial boilers and furnaces.

• What causes a Lochinvar ignition lockout? Often, a cracked or worn hot surface ignitor lacks the resistance to reach ignition temperature, triggering a "No Flame" error on the control board.
• Can I use the 100326985 to replace an older PLT1151? Yes, the 100326985 is the current manufacturer-recommended direct replacement ignitor for those older part numbers.
• Is the gasket included in the kit? Yes, this ignitor kit comes with the required gasket to maintain HVAC system safety and efficiency.

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.