Ao Smith 100112344 Burner Assembly 16 in 39 Orifice Natural Gas

Product Description

The AO SMITH 100112344 is a 16-inch burner assembly designed for natural gas water heaters. It houses a 39-orifice configuration that distributes the gas flame across the burner surface, providing consistent heat transfer to the tank. This assembly is a direct replacement component installed by licensed plumbers and HVAC technicians during burner failure, routine maintenance, or combustion performance troubleshooting. The orifice count and burner size are matched to specific tank diameters and BTU input ratings, making correct part identification critical before ordering.

This burner assembly is intended for natural gas-fired water heater applications. The 16-inch length positions it as a component suited to residential or light commercial storage tank water heaters where the burner sits at the base of the tank assembly. It is typically accessed by removing the burner access panel and disconnecting the gas supply manifold and thermocouple or thermopile leads before extraction and replacement.

Key Features

• 16-inch burner length sized for compatible natural gas water heater tank diameters
• 39-orifice design for distributed flame pattern across the burner surface
• Natural gas configuration — not interchangeable with propane (LP) orifice assemblies
• OEM-style replacement part for restoring proper combustion performance
• Direct swap design reduces installation time during service calls

Compatibility

Designed as an OEM-style replacement burner assembly for natural gas storage tank water heaters requiring a 16-inch burner with a 39-orifice configuration.

Installation Notes

Installation should be performed by a licensed plumber or qualified gas appliance technician in accordance with local codes and the appliance manufacturer service documentation. Shut off the gas supply at the service valve and allow the unit to cool completely before removing the burner access panel or disconnecting any gas line connections. Never attempt to modify the orifice configuration or interchange natural gas components with propane-rated parts. Verify gas type, orifice count, and burner dimensions match the existing assembly before installation.

Technical Specifications

• Burner Length: 16 inches
• Orifice Count: 39
• Fuel Type: Natural Gas

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100112344