Ao Smith 100187918 Final Burner Assembly Kit Nat Gas

Product Description

The AO SMITH 100187918 is a final burner assembly kit for natural gas water heaters. It includes the burner component positioned at the end of the burner tray, which ignites and sustains the flame used to heat the water supply. At 14 inches in length and fitted with a 37 orifice, this kit delivers the correct fuel metering and combustion geometry for the target appliance. Licensed plumbers and gas appliance technicians handle this type of repair when the existing burner shows erosion, clogging, or flame-pattern failure. The kit format means the critical hardware ships together, reducing the risk of mismatched components during a field repair.

This burner assembly is intended for natural gas-fired residential water heaters. The 14-inch length and 37 orifice size point to a specific heater configuration, so verifying the model number on the water heater data plate before ordering is essential. It is suited for service work where the original burner has degraded and a full burner replacement is required rather than a simple orifice swap.

Key Features

• Natural gas configuration with 37 orifice for precise fuel metering
• 14-inch burner length matches the target heater combustion chamber
• Kit format includes all required burner assembly components
• OEM-style replacement designed for direct installation

Compatibility

Designed as an OEM-style replacement final burner assembly for AO SMITH natural gas water heaters requiring a 14-inch burner with a 37 orifice. Verify the model and serial number on the unit data plate before installation.

Installation Notes

This component is installed by a licensed plumber or qualified gas appliance technician. Before beginning work, shut off the gas supply at the isolation valve and allow the burner assembly to cool completely. Local codes, including the International Fuel Gas Code (IFGC), govern gas appliance servicing and may require inspection after burner replacement. Do not reuse damaged orifice fittings or attempt to modify the orifice size.

Technical Specifications

• Fuel Type: Natural Gas
• Burner Length: 14 inches
• Orifice Size: 37
• Kit Type: Final Burner Assembly

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100187918