American Water Heaters 100108729 Pilot Assembly PB-5S Lp

Product Description

The AMERICAN WATER HEATERS 100108729 is a propane (LP) pilot assembly carrying the model designation PB-5S, designed for use in residential gas water heaters. The pilot assembly serves as the ignition source that lights the main burner, allowing the water heater to maintain set water temperature. It includes the pilot burner, thermocouple or thermopile lead, and associated tubing as a complete assembly. Plumbers and water heater service technicians install this part as a direct replacement when the existing pilot fails to light or hold a flame on LP-fueled units.

This pilot assembly is intended for propane (LP) water heater applications. LP pilot assemblies are not interchangeable with natural gas versions due to orifice size differences, making fuel-type verification critical before installation. The PB-5S model designation should be confirmed against the existing pilot assembly and the water heater data label to ensure correct fitment. This part is sold as a single unit.

Key Features

• Propane (LP) fuel type - not compatible with natural gas applications
• PB-5S model designation for direct OEM-style replacement
• Complete pilot assembly sold as a single unit
• Designed for residential gas water heater pilot systems

Compatibility

Designed as an OEM-style replacement pilot assembly for AMERICAN WATER HEATERS propane (LP) water heaters. Confirm fitment using your unit model number and serial number before installation.

Installation Notes

A licensed plumber or qualified water heater service technician should perform this replacement. Shut off the gas supply valve and allow the unit to cool before beginning work. Follow the appliance manufacturer service instructions and all applicable local gas codes, including IFGC requirements, when servicing gas components. Do not attempt to adapt an LP pilot assembly to a natural gas application by modifying the orifice.