Ao Smith 100110899 Igniter Natural Propane Gas Commercial

Product Description

The AO SMITH 100110899 is a replacement igniter designed for commercial gas water heaters running on natural gas or propane. The igniter initiates combustion in the burner assembly, making reliable spark generation critical for consistent water heater operation. This high-efficiency igniter is built for commercial-grade equipment where frequent cycling and continuous-duty performance are expected. It is typically installed by licensed plumbers or commercial HVAC-P technicians during routine maintenance or after a no-heat diagnostic points to ignition failure.

This igniter is compatible with AO SMITH BTH, SUF, and HCG series commercial water heaters across multiple capacity ranges including 60-120, 100-150, 100-199, and 100-250 models. These series are commonly found in light commercial and industrial applications such as restaurants, laundromats, apartment buildings, and other facilities with high-volume domestic hot water demand. It supports both natural gas and propane fuel configurations, making it a versatile service replacement for mixed-fuel commercial accounts.

Key Features

• Compatible with both natural gas and propane fuel types
• High-efficiency design suited for commercial continuous-duty operation
• Direct replacement for BTH, SUF, and HCG series water heaters
• Covers a wide range of capacity models from 60-120 through 100-250
• OEM part number ensures proper fit and function in supported equipment

Compatibility

Designed for use with AO SMITH BTH, SUF, and HCG series commercial gas water heaters in the following capacity ranges: 60-120, 100-150, 100-199, and 100-250. Compatible with natural gas and propane fuel configurations.

Installation Notes

Installation should be performed by a licensed plumber or qualified gas appliance technician. Shut off the gas supply and disconnect power to the water heater before beginning any service work. Follow applicable local codes and manufacturer service documentation when removing the old igniter and connecting the replacement. Do not restore gas or power until all connections are confirmed secure and the access panel is reinstalled.

Technical Specifications

• Fuel Type: Natural Gas, Propane
• Application: Commercial
• Efficiency: High Efficiency
• Compatible Series: BTH, SUF, HCG
• Compatible Capacity Ranges: 60-120, 100-150, 100-199, 100-250

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100110899