Lochinvar & A.O. Smith 100109200 Burner Assembly

Ensure your clients' water heaters are operating at peak efficiency with the Lochinvar & A.O. Smith 100109200 Burner Assembly. This NAT FV BURNER ASSY #33 ORF is the direct OEM replacement burner engineered for Natural Gas (NG) applications, providing a precise 40,000 BTU output. As a professional-grade component, it serves as the critical 100109200 updated version for 9003379005, ensuring seamless manifold assembly compatibility with Flammable Vapor Ignition Resistant (FVIR) residential water heaters. The assembly features a high-grade #33 orifice designed to maintain consistent flame patterns and optimal combustion characteristics within the combustion chamber. Designed for A.O. Smith, Lochinvar, and State units, this genuine water heater burner kit facilitates a clean burn and stable pilot light performance. When diagnosing pilot light failure or inefficient heating, replacing the entire gas burner assembly ensures all integral components, including the orifice and burner head, meet factory 19.6" x 11.4" x 8" dimensional tolerances for a safe, reliable installation.

• Broad Compatibility: Serves as the official 9003379005 replacement for A.O. Smith, Lochinvar, and State residential gas water heaters.
• Precision Engineering: Equipped with a #33 orifice calibrated specifically for Natural Gas to ensure a steady 40,000 BTU heat rating.
• OEM Reliability: Genuine factory-authorized part eliminates the seating and alignment issues common with generic aftermarket assemblies.
• FVIR Compliant: Specifically designed for Flammable Vapor Ignition Resistant systems to maintain safety standards within the combustion zone.

• How do I verify if the 100109200 burner fits my unit? Cross-reference your water heater’s serial number and model number; this part is the direct update for legacy part number 9003379005.
• Can I use this burner assembly with Liquid Propane (LP) gas? No, this assembly is strictly for Natural Gas (NG). Using the incorrect gas type with a #33 orifice will lead to hazardous combustion levels.
• Does this kit include the entire manifold door assembly? Yes, this is a complete final burner assembly, allowing for a comprehensive swap-out to address clogged orifices or corroded burner heads.

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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.