Lochinvar & A.O. Smith 100109201 Burner

The Lochinvar & A.O. Smith 100109201 Burner Assembly is a factory-authorized OEM replacement part designed for high-efficiency natural gas water heaters and boilers. This critical combustion component features a precision-engineered #33 orifice, specifically calibrated to maintain the correct BTU input and air-to-fuel ratio for FVIR (Flammable Vapor Ignition Resistant) compliant systems. As an updated version for the 9003380005, this assembly ensures seamless HVACR compatibility across various residential and commercial models. For technicians performing a burner replacement, this unit provides the exact technical specifications required to restore factory-standard performance and combustion stability. The robust construction and exact manifold fitment minimize the risk of delayed ignition or soot buildup within the heat exchanger. Integrating this genuine Lochinvar part into your service routine prevents the common issues associated with generic aftermarket alternatives, ensuring long-term reliability in demanding A.O. Smith water heater applications.

• Direct OEM Replacement: Engineered to the exact specifications of the Lochinvar 100109201 for a perfect burner assembly fit.
• Calibrated Combustion: Equipped with a #33 orifice for optimized natural gas flow and efficient thermal transfer.
• FVIR Compliance: Designed for FV (Flammable Vapor) systems, ensuring the unit meets all modern safety and venting requirements.
• Updated Performance: Serves as the official successor to part number 9003380005, addressing previous manifold design limitations.
• Heavy-Duty Construction: Built to withstand high-temperature cycles without warping, preserving the integrity of the burner ports.

• Is this burner compatible with propane (LP) units? No, this assembly is strictly for natural gas configurations. Using it with propane without a proper conversion kit is hazardous.
• Does this include the burner gasket? It is recommended to verify the existing seal during burner removal; technicians often source a new foam seal or gasket separately to ensure a proper air seal.
• Can I use this in an A.O. Smith water heater? Yes, this is a cross-functional part used extensively in both Lochinvar and A.O. Smith residential FVIR models.

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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.