Lochinvar & A.O. Smith 100108509 Heating Element

The Lochinvar & A.O. Smith 100108509 Heating Element is a heavy-duty, 208V, 5000W OEM replacement engineered for precise thermal transfer in residential and light commercial water heaters. Featuring a 10.75-inch immersion length, this zinc-plated copper water heater element utilizes a mid-line screw-in design to ensure a watertight seal and long-term resistance against mineral accumulation. As a genuine A.O. Smith factory part, it is the direct replacement for 9001224115 and 9001224005, maintaining the exact watt density required for mid-size tank configurations. For a successful water heater element replacement, always verify that your system is wired for 208V to prevent premature failure or electrical issues. This 5000 watt 208 volt element includes the necessary gasket for a standard 1-inch NPSM connection, making it the reliable choice for contractors servicing Lochinvar or A.O. Smith equipment.

• Enhanced Corrosion Resistance: The Corrogard zinc-plated copper construction protects the sheath from aggressive water conditions and scale buildup.
• Optimized Watt Density: Designed with the lowest practical watt density for its size to improve heat distribution and prevent localized overheating.
• OEM Compatibility: Guaranteed fit for specific Lochinvar and A.O. Smith models, ensuring the 10.75-inch length clears internal baffles and dip tubes.
• Simplified Installation: Standard screw-in design with a 1-1/2 inch hex head allows for straightforward removal and replacement using a standard element wrench.

How do I know if I need a 208V or 240V heating element?
Always check the rating plate on your water heater. Installing a 208V element in a 240V system will cause it to draw excessive amperage and fail quickly, while a 240V element in a 208V system will produce significantly less heat than rated.

Can I replace the 100108509 without draining the entire tank?
While some technicians use vacuum-assisted methods to swap elements quickly, we recommend draining the tank below the element level to ensure the gasket seats correctly and to inspect the internal threads for debris.

Is the gasket included with this heating element?
Yes, this OEM part comes with a high-temperature gasket to ensure a leak-proof seal during installation.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.