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The A.O. Smith 100109537 is an OEM element conversion kit designed for electric water heaters operating on 277-volt circuits. The kit converts the heating element configuration to a 1,500-watt output, making it suitable for service situations where the existing element setup must be upgraded or replaced to match supply voltage and load requirements. Installation is performed by licensed plumbers or water heater service technicians working on commercial or light-commercial water heating equipment. As a genuine OEM part, it ships in original A.O. Smith factory packaging and is built to meet the original equipment specification.
This conversion kit is intended for electric water heater applications where 277-volt single-phase power is supplied, a configuration common in commercial buildings and multi-unit residential facilities. The 1,500-watt element rating is suited for lower-demand or supplemental heating zones. Because fitment is model- and serial-number-specific, it is not a universal replacement and must be matched to the correct unit before ordering.
Designed as an OEM-specific replacement element conversion kit for select A.O. Smith electric water heater models. Fitment is determined by model number and serial number. Verify compatibility against the unit nameplate before installation.
Installation should be performed by a licensed plumber or qualified water heater service technician. Before beginning work, shut off electrical power to the water heater at the breaker panel and close the cold water supply valve. Drain the tank or relieve pressure as required to safely access the element port. Local plumbing and electrical codes, including applicable sections of the IPC and NEC, govern this type of service work.
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