Ao Smith 100110795 Hot Surface Ignitor

Product Description

The AO SMITH 100110795 is a hot surface ignitor designed as a direct replacement component for gas-fired water heater systems. Hot surface ignitors replace standing pilot assemblies in modern ignition systems, using electrical resistance to generate the heat needed to ignite the main burner. This part is installed by licensed plumbers or HVAC technicians during routine ignition system service or when diagnosing a no-heat or no-ignition fault. It is a direct OEM-style replacement intended to restore reliable ignition performance.

This ignitor is suited for residential gas water heater applications where the original ignitor has failed or shows signs of cracking, carbonization, or resistance drift. It fits into the burner assembly area of the appliance and connects to the water heater control circuit. Installation is typically required when the unit fails to light despite normal gas pressure and thermostat operation.

Key Features

• OEM-style replacement ignitor for gas water heater systems
• Resistance-based hot surface ignition eliminates standing pilot
• Direct replacement design simplifies swap-out during service calls
• Supports reliable burner ignition in residential gas water heater applications

Compatibility

Designed as an OEM-style replacement hot surface ignitor for AO SMITH gas water heaters requiring part number 100110795.

Installation Notes

Installation should be performed by a licensed plumber or qualified service technician. Before servicing, shut off the gas supply and disconnect electrical power to the water heater. Handle the ignitor element carefully to avoid cracking the fragile ceramic or silicon nitride tip. Verify ignitor resistance with a multimeter before and after installation to confirm proper operation.

Technical Specifications

• Type: Replacement Part

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100110795