Ao Smith 100109649 Screw-in Element 4500W 277V 10.75 in

Product Description

The AO SMITH 100109649 is a Corrogard zinc-plated copper screw-in water heater element rated at 4500 watts and 277 volts. Designed for tank-style water heaters, it uses a low watt density design to extend element life and reduce scale buildup on the sheath surface. The zinc plating adds a layer of corrosion protection suited to the mineral and chemical conditions common in residential and light commercial water heater tanks. A gasket is included for a complete, leak-ready installation. At 10.75 inches in length, it fits standard screw-in element ports on a wide range of storage tank water heaters.

This element is intended for residential and light commercial electric water heater applications. It is a direct screw-in replacement suited to storage tank water heaters operating on 277-volt circuits, which are common in commercial and multi-family settings. The low watt density rating makes it a practical choice where water quality or extended service intervals are a concern. Licensed plumbers and water heater technicians are the primary installers, though many jurisdictions permit homeowner replacement with permit.

Key Features

• Corrogard zinc-plated copper sheath for enhanced corrosion resistance
• Low watt density design reduces scale accumulation and extends service life
• Rated 4500 watts at 277 volts for compatibility with commercial-voltage circuits
• Screw-in element style for straightforward tank installation and removal
• Includes gasket for a complete, leak-ready installation
• Suitable for residential and light commercial electric water heater tanks

Compatibility

Designed as an OEM-style screw-in replacement element for residential and light commercial electric storage tank water heaters with a standard screw-in element port.

Installation Notes

Installation should be performed by a licensed plumber or qualified water heater technician in accordance with local plumbing codes and the IPC. Always shut off electrical power at the breaker and close the cold-water supply valve before removing the old element. Drain sufficient water from the tank to expose the element port before removal. Use an element wrench for proper seating and to avoid cross-threading; do not overtighten beyond the manufacturer specification noted on the product documentation.

Technical Specifications

• Wattage: 4500 watts
• Voltage: 277 volts
• Element Length: 10.75 inches
• Element Style: Screw-in
• Material: Zinc-plated copper
• Includes Gasket: Yes

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100109649