Ao Smith 100111019 Lower Probe Commercial Water Heater

Product Description

The AO SMITH 100111019 is a lower probe replacement part designed for high-efficiency commercial water heater systems. This probe monitors water temperature or level conditions within the tank, providing the control system with the data needed to maintain accurate and safe operation. It is a direct-replacement component intended for installation by licensed plumbing or HVAC technicians servicing commercial water heating equipment. Built for high-efficiency operation, the 100111019 is suited to demanding commercial environments where reliable sensing is critical to system performance.

This lower probe is compatible with AO SMITH commercial water heater series including BTH, SUF, and HCG models. Applicable unit size ranges include 60-120, 100-150, 100-199, and 100-250. These designations cover a broad range of commercial storage and high-input water heaters commonly found in hotels, multi-family residential buildings, laundries, and light commercial facilities. Install technicians should verify the unit series and model number before ordering to confirm proper fitment.

Key Features

• Designed for high-efficiency commercial water heater applications
• Compatible with BTH, SUF, and HCG series AO SMITH units
• Covers a wide range of commercial unit sizes from 60-120 through 100-250
• OEM-style replacement for accurate sensor function within the control circuit
• Lower probe position provides tank-bottom temperature or level sensing

Compatibility

Compatible with AO SMITH commercial water heater series BTH, SUF, and HCG in the following size ranges: 60-120, 100-150, 100-199, and 100-250.

Installation Notes

Installation should be performed by a licensed plumber or qualified HVAC technician familiar with commercial water heating systems. Shut off gas or electric supply to the water heater and relieve system pressure before removing or installing any probe components. Follow all applicable local plumbing codes and the manufacturer service documentation for probe removal, sealing, and torque procedures. Do not restore power or fuel supply until all connections have been verified and the system is fully reassembled.

Technical Specifications

• Application: Commercial water heater lower probe
• Compatible Series: BTH, SUF, HCG
• Compatible Size Ranges: 60-120, 100-150, 100-199, 100-250
• Efficiency Rating: High Efficiency

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100111019