Lochinvar & A.O. Smith 100109246 Burner

As an HVAC technician, you know that maintaining proper combustion efficiency in natural gas water heaters starts with the burner assembly. The Lochinvar & A.O. Smith 100109246 Burner is a direct OEM replacement designed specifically for units utilizing Flammable Vapor Ignition Resistant (FVIR) technology. This NAT FV Burner Assy comes factory-integrated with a #36 orifice, ensuring precise fuel-to-air ratios for consistent thermal output and reliable ignition. When you are dealing with a water heater not heating or irregular flame patterns, replacing the entire gas burner assembly is often the most effective way to restore the FVIR system burner to its original performance standards. This assembly is engineered to fit seamlessly within the combustion chamber, preventing debris accumulation and operational failures common with after-market components. Utilizing genuine HVAC replacement parts like the 100109246 ensures the unit maintains its technical specifications and safety rating throughout its service life. Always verify the orifice size and gas type before installation to match the A.O. Smith 100109246 specifications exactly.

• Optimized Combustion: Features a factory-calibrated #36 orifice for precise natural gas delivery.
• Direct OEM Fit: Guaranteed compatibility with Lochinvar and A.O. Smith residential gas water heaters, reducing installation downtime.
• FVIR Integrated Design: Specifically engineered for Flammable Vapor Ignition Resistant units to maintain factory safety standards.
• Durable Construction: High-grade materials resist premature wear and thermal stress during heavy-cycle operation.

Is this burner compatible with LP (Propane) units?
No, this assembly is strictly for Natural Gas applications as indicated by the #36 orifice. Conversion to LP requires a different orifice size and assembly configuration.

What symptoms indicate I need a new 100109246 burner assembly?
If you observe soot accumulation, a yellow "lazy" flame, or frequent FVIR system lockouts, the burner ports may be clogged or the assembly may be compromised.

Does this include the pilot assembly and thermocouple?
This specific SKU typically includes the burner head and tube assembly with the #36 orifice. It is standard practice to inspect the pilot tubing and thermal sensors during replacement for a complete system refresh.

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.