Lochinvar & A.O. Smith 100042913 Head Assembly

The Lochinvar & A.O. Smith 100042913 Burner Head Assembly With Stud is a critical OEM replacement part engineered for high-recovery commercial and residential water heaters. As a veteran-grade burner head assembly, this component ensures a stable, horizontal flame pattern and precise gas-air mixture required for optimal thermal efficiency. Designed to withstand high-combustion temperatures, the 100042913 features a pre-installed mounting stud for a secure fit to the burner tray, minimizing vibration and maintaining consistent CO2 levels. This water heater burner head is compatible with various Lochinvar and A.O. Smith models, effectively replacing legacy part numbers and restoring the unit’s BTU input rating to factory specifications. For contractors, this assembly facilitates a rapid service call by aligning perfectly with existing manifold configurations. Using genuine gas water heater parts like the 100042913 prevents premature heat exchanger fouling and ensures the system operates within its engineered gas pressure parameters. Verify your serial number for exact fitment before installation.

Key Benefits:

• Direct OEM Fit: Ensures seamless integration with Lochinvar and A.O. Smith burner trays without field modifications.
• Enhanced Combustion: Engineered porting provides a uniform flame for maximized heat transfer and reduced standby loss.
• Durable Construction: High-grade materials resist warping under intense combustion chamber heat.
• Integrated Stud: Simplifies the installation process, ensuring the head remains anchored during high-demand firing cycles.

Common Questions:

Is the 100042913 compatible with LP gas systems?
Yes, while typically found in natural gas configurations, this burner head assembly can be utilized across different gas types depending on the orifice and manifold setup of your specific water heater model.

Does this part replace the 183630-000?
Correct. The 100042913 is the updated manufacturer replacement for the older 183630-000 part number, maintaining all original technical specifications.

How do I ensure this is the right head for my burner tray?
Check the data plate on your unit. Technical HVACR documentation suggests matching the OEM part number to your specific series to ensure proper manifold alignment and airflow.

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.