Ao Smith 100112851 Hot Surface Igniter Kit

Product Description

The AO SMITH 100112851 is a hot surface igniter kit designed for use in gas-fired water heating equipment. The hot surface igniter serves as the primary ignition component, generating the heat needed to light the main burner during each heating cycle. When the igniter fails, the burner will not light, resulting in no hot water. This kit provides the replacement igniter assembly needed to restore normal ignition function. Installation is typically performed by a licensed plumber or water heater service technician familiar with gas appliance repair.

This igniter kit is suited for residential and light commercial gas water heater applications where the original igniter has failed due to age, cracking, or normal wear. Hot surface igniters are consumable components with a finite service life and are among the most common service parts replaced during water heater maintenance and repair calls. Technicians should confirm the part number match against the unit nameplate before installation.

Key Features

• Direct replacement igniter kit for AO SMITH gas water heater applications
• Restores burner ignition function when original igniter has failed
• Hot surface ignition design eliminates the need for a standing pilot
• Kit format includes components needed for a complete igniter replacement

Compatibility

Designed as an OEM-style replacement igniter kit for AO SMITH gas-fired water heaters. Verify the unit model number and nameplate data against this part number before ordering.

Installation Notes

Installation should be performed by a licensed plumber or qualified gas appliance technician. Shut off the gas supply and disconnect electrical power to the water heater before beginning any service work. Hot surface igniters are fragile ceramic components and must not be touched with bare hands during handling, as skin oils can shorten service life. Work should comply with applicable local codes and the manufacturer service documentation for the specific unit.

Technical Specifications

• Ignition Type: Hot Surface
• Component Type: Igniter Kit

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100112851