Ao Smith 100112679 Hot Surface Ignitor Kit

Product Description

The AO SMITH 100112679 is a hot surface ignitor kit designed as a direct replacement component for gas-fired water heater systems. The ignitor kit provides the high-resistance heating element that reaches ignition temperature when energized, replacing the function of a standing pilot light with a more reliable electronic ignition method. Installation is typically performed by a licensed plumber or gas appliance technician as part of a routine ignition system service or failure-related repair. This kit includes the ignitor assembly needed to restore proper burner ignition function.

This ignitor kit is suited for residential and light-commercial gas water heater applications where the original hot surface ignitor has failed or degraded. Hot surface ignitors are a common wear component in gas appliance ignition systems and are replaced as part of standard no-heat diagnostics. When a unit fails to fire and the ignitor tests open or shows visible cracking, a direct replacement kit like this restores normal operation without requiring broader burner assembly work.

Key Features

• Direct replacement ignitor kit for AO SMITH gas water heater ignition systems
• Restores electronic ignition function without standing pilot light
• OEM-matched replacement designed to fit original mounting configuration
• Kit format provides the components needed for a complete ignitor service

Compatibility

Designed as an OEM-style replacement ignitor kit for AO SMITH gas water heater models. Verify fitment against the appliance model and serial number before installation.

Installation Notes

Installation should be performed by a licensed plumber or qualified gas appliance technician familiar with IFGC service procedures. Shut off the gas supply and disconnect power to the water heater before beginning any ignition system service. Hot surface ignitors are fragile — handle the ignitor element without touching the ceramic or silicon nitride tip, as skin oils can cause premature failure. Confirm the replacement ignitor is fully seated and all electrical connectors are secure before restoring gas and power.

Technical Specifications

• Type: Replacement Part

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100112679