Ao Smith 100108509 Screw-in Element 208V 5000W 10.75 in

Product Description

The AO SMITH 100108509 is a screw-in water heater heating element designed for residential and light commercial water heater applications. Built with zinc-plated copper construction under the Corrogard designation, this element offers improved corrosion resistance compared to standard copper elements. Rated at 208 volts and 5000 watts, it delivers reliable heat transfer at a low practical watt density for its size, which reduces scale buildup and extends service life. The element measures 10.75 inches in length and ships with a gasket included, simplifying the replacement process for plumbers and water heater service technicians.

This element is suited for residential storage tank water heaters and light commercial units that accept a standard screw-in element configuration. It is a common replacement for worn, failed, or scaled-out elements in electric water heaters. Service technicians working on 208-volt systems, including multi-unit residential buildings and light commercial installations, will find this element appropriate for those applications.

Key Features

• Zinc-plated copper construction provides corrosion protection in hard or aggressive water conditions
• Rated 208 volts and 5000 watts for compatibility with light commercial and residential 208-volt systems
• 10.75-inch element length fits standard screw-in water heater openings
• Low practical watt density for element size reduces scale accumulation and extends element life
• Gasket included — no separate gasket purchase required for a standard swap
• Screw-in mounting style for straightforward removal and installation

Compatibility

Designed as an OEM-style screw-in replacement element for residential and light commercial electric storage tank water heaters rated at 208 volts.

Installation Notes

Installation should be performed by a licensed plumber or qualified water heater technician. Before replacing the element, shut off electrical power to the water heater at the breaker and close the cold water supply valve. Drain sufficient water from the tank to expose the element port before removal. Use a water heater element wrench for proper seating and ensure the included gasket is seated correctly to prevent leaks before restoring power and water supply.

Technical Specifications

• Voltage: 208 volts
• Wattage: 5000 watts
• Element Length: 10.75 inches
• Element Type: Screw-in
• Material: Zinc-plated copper
• Gasket Included: Yes

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100108509