Lochinvar & A.O. Smith 100108406 Heating Element

The Lochinvar & A.O. Smith 100108406 Heating Element is a high-performance 240V 4500W water heater element designed for demanding residential and commercial applications. Featuring a 13-inch Incoloy sheath, this screw-in heating element provides exceptional resistance to oxidation and scaling, particularly in hard water conditions where standard copper elements typically fail. This OEM replacement part (formerly part number 9004455005) ensures exact fitment and maintains the original thermal efficiency of the water heater. When troubleshooting recovery issues or heating failure, this 4500-watt Incoloy element is the professional choice for ensuring long-term reliability and heat transfer consistency. Its low watt density design reduces surface temperature, significantly extending the service life of the component under heavy cycling. This element is compatible with a wide range of Lochinvar and A.O. Smith tank-style heaters requiring a 1-inch NPSM connection thread.

Key Benefits

• Incoloy Sheath Material: Superior corrosion resistance and durability in aggressive water conditions compared to standard materials.
• Direct OEM Specification: Ensures seamless integration with existing Lochinvar and A.O. Smith commercial and residential models.
• Optimal Heat Transfer: 4500W rating at 240V provides consistent thermal output for rapid recovery times.
• 13-Inch Immersion Length: Optimized surface area for efficient heating within the tank's water column.
• Standard Screw-In Mounting: Simplified installation process using a 1-inch NPSM thread configuration.

Common Questions

Is the 100108406 element compatible with hard water?
Yes, the Incoloy construction is specifically engineered to resist lime and scale buildup, making it far more effective in hard water environments than copper elements.

Can I use this element in a 208V system?
While it will physically fit, using a 240V 4500W element on a 208V circuit will result in significantly lower heat output (approximately 3380W). Always match voltage specifications to your site's electrical supply.

What is the thread size for this unit?
This part utilizes a standard 1-inch NPSM screw-in connection, which is the industry standard for most A.O. Smith replacement elements.

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.