Lochinvar & A.O. Smith 100093993 Burner Assembly 321894-708 Corrosion Resistance: Stainless steel power

Corrosion Resistance: Stainless steel power element and capillary tube withstand harsh environmental conditions

While the hardware is direct-fit

Universal Barb Interface: Standard 1/4" barb allows for secure hose attachment and easy field installation

provided the media is compatible with brass and copper components

Always check for blocked vent pipes or a failing inducer motor before replacing the switch

Lochinvar & A.O. Smith 100093993 Burner Assembly 321894-708 Corrosion Resistance: Stainless steel powerThe Lochinvar & A. O. Smith 100093993 Burner Assembly is a high performance NAT Final Burner Assy engineered for precise combustion in commercial water heaters and hydronic boilers. This genuine OEM replacement part is critical for restoring the stoichiometric air fuel ratio, ensuring a stable, concentrated flame that maximizes heat transfer while minimizing NOx emissions. Fabricated with high grade, heat resistant materials, the 100093993 burner