Lochinvar & A.O. Smith 100111591 Burner

The Lochinvar & A.O. Smith 100111591 is a high-performance 14 inch burner assembly specifically engineered for commercial and residential natural gas (NG) water heaters and boilers. This OEM water heater burner features a factory-calibrated #39 orifice to ensure precise gas-to-air mixing, facilitating optimal combustion efficiency and reducing pollutant output. Built to the rigorous standards of Lochinvar and A.O. Smith, this final burner assembly is a critical component for maintaining the correct heat output and system pressure required by high-recovery units. Contractors should verify the specific unit serial number to ensure exact fitment, as this replacement burner assembly is designed for specific model architectures rather than universal application. The robust construction of the 100111591 burner ensures long-term operational stability and thermal durability in demanding hydronic and domestic hot water environments. For technicians performing a water heater burner replacement, this genuine part maintains the original equipment’s performance specifications and safety tolerances.

• Precision-Engineered Orifice: Includes a factory-set #39 orifice for reliable natural gas flow and consistent flame patterns.
• OEM Compatibility: Genuine Lochinvar and A.O. Smith part ensures seamless integration with internal control systems and gas valves.
• High Combustion Efficiency: Optimized 14-inch design maximizes thermal transfer while minimizing fuel waste and emissions.
• Industrial-Grade Construction: Built to withstand high-cycling environments common in commercial hot water applications.

Is the 100111591 burner assembly compatible with LPG units?
No, this specific assembly is configured for natural gas (NG) only. Using this burner with liquid propane without a verified conversion kit and specific orifice changes will lead to unsafe combustion.

Does this assembly include the mounting hardware or gaskets?
This is the final burner assembly with the #39 orifice. Technicians should inspect secondary components like the burner gasket or mounting bolts and replace them if they show signs of thermal degradation.

How do I confirm this fits my specific water heater?
Always check the rating plate of the appliance. This 14-inch burner is model-specific; providing the serial number to our technical team is the most reliable way to confirm compatibility before installation.

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.