Ao Smith 100071821 Burner Assembly Kit Natural Gas

Product Description

The AO SMITH 100071821 is a final burner assembly kit designed for natural gas water heaters. This kit provides the complete burner assembly needed to restore proper combustion function in a gas-fired water heating system. At 18 inches in length and equipped with a 34 orifice, it delivers a precise fuel-air mixture for efficient and stable flame operation. Licensed plumbers and water heater service technicians install this component as part of a burner replacement or combustion system repair.

This burner assembly kit is suited for residential and light commercial natural gas water heater applications where the original burner assembly has failed or is performing outside acceptable parameters. It is intended for use in systems requiring an 18-inch burner configuration with a 34 orifice specification. Installations typically occur during scheduled maintenance or in response to ignition failure, incomplete combustion, or visible burner damage.

Key Features

• Complete final burner assembly kit for straightforward replacement service
• Natural gas configuration with a 34 orifice for precise fuel delivery
• 18-inch burner length suits specific AO SMITH water heater applications
• OEM-specification design supports accurate flame pattern and combustion efficiency
• Designed for licensed technician installation in gas-fired water heating systems

Compatibility

Designed as an OEM-style replacement burner assembly for AO SMITH natural gas water heaters requiring an 18-inch final burner assembly with a 34 orifice. Consult the unit nameplate and service documentation to confirm fitment before installation.

Installation Notes

Installation should be performed by a licensed plumber or qualified gas appliance technician in accordance with local codes and the manufacturer service documentation. Shut off the gas supply and allow the water heater to cool fully before beginning any burner service. Inspect the burner compartment, orifice seating, and gas supply connections for debris or damage before installing the new assembly. After installation, perform a leak check on all gas connections using an approved detection solution before restoring power or relighting the appliance.

Technical Specifications

• Fuel Type: Natural Gas
• Burner Length: 18 inches
• Orifice Size: 34
• Kit Type: Final Burner Assembly

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100071821