Ao Smith 100111630 Air Pressure Switch Kit 1.00 Inch

Product Description

The AO SMITH 100111630 is an air pressure switch kit designed for use in water heater systems that rely on draft-proving or combustion air verification. The pressure switch monitors air flow conditions and signals the control board to allow ignition only when proper venting and combustion air conditions are confirmed. This style of safety component is typically installed by licensed plumbers or HVAC technicians servicing gas-fired water heater equipment. The kit format suggests it includes the switch and any associated hardware needed for a complete field replacement.

This air pressure switch kit is sized at 1.00 inch and is intended for residential or light commercial gas water heater applications where the original pressure switch has failed or requires replacement as part of a scheduled service call. It restores the venting safety interlock function that prevents the burner from firing under improper draft conditions.

Key Features

• Kit format includes switch and associated replacement hardware for a complete service solution
• 1.00 inch sizing matches OEM specification for compatible AO SMITH water heater models
• Monitors combustion air and draft conditions before allowing burner ignition
• Direct OEM-style replacement designed to restore original safety interlock function

Compatibility

Designed as an OEM-style replacement air pressure switch kit for AO SMITH gas-fired water heaters requiring a 1.00 inch pressure switch. Refer to the unit nameplate and service documentation to confirm fitment before installation.

Installation Notes

Installation should be performed by a licensed plumber or qualified HVAC technician familiar with gas appliance safety controls. Before servicing, shut off gas supply and disconnect electrical power to the water heater. Inspect venting and pressure tubing connections for cracks or blockages that may have contributed to switch failure. Follow all applicable local codes and the manufacturer service documentation when replacing safety interlock components.

Technical Specifications

• Switch Size: 1.00 inch
• Component Type: Air Pressure Switch Kit

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100111630