Ao Smith 100110929 Main Burner Assembly Low Nox

Product Description

The AO SMITH 100110929 is a main burner assembly designed for low NOx combustion in residential and light commercial water heaters. This assembly serves as the primary combustion component, responsible for igniting and sustaining the flame that heats the water supply. The low NOx design reduces nitrogen oxide emissions during combustion, helping systems meet regional air quality requirements. Licensed plumbers and HVAC technicians typically handle installation or replacement of this assembly as part of routine burner service or unit repair.

This burner assembly is suited for gas-fired water heater applications where low NOx compliance is required. It is commonly installed in residential storage tank water heaters and light commercial units that must meet stricter emissions standards, such as those enforced in California and other regulated markets. Replacement of the main burner assembly is typically needed when combustion performance degrades, the burner shows signs of corrosion or blockage, or when the unit fails to maintain proper flame characteristics.

Key Features

• Low NOx combustion design reduces nitrogen oxide emissions to meet regional air quality standards
• Functions as the primary heat source in compatible gas-fired water heater systems
• OEM-style replacement part for reliable fit and combustion performance
• Suitable for residential and light commercial water heater applications

Compatibility

Designed as an OEM-style replacement main burner assembly for AO SMITH gas-fired water heaters requiring low NOx compliant components. Consult the unit's service manual or AO SMITH directly to confirm fitment for your specific model.

Installation Notes

Installation of this burner assembly should be performed by a licensed plumber or qualified gas appliance technician. Shut off the gas supply and allow the unit to cool completely before beginning any burner service work. Follow all applicable local codes and manufacturer service procedures when removing and reinstalling burner components. Do not reuse damaged or deformed burner parts, and verify proper flame appearance and gas valve operation after installation.

Technical Specifications

• Emissions Design: Low NOx
• Component Type: Main Burner Assembly

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100110929