Lochinvar & A.O. Smith 100108618 Heating Element

Professionals in the field understand that consistent recovery and thermal stability depend on using verified components. The Lochinvar & A.O. Smith 100108618 Heating Element is a screw-in water heater element designed specifically for heavy-duty residential and commercial applications. Engineered from corrosion-resistant copper, this 4500W 240V heating element features an 8-1/8 inch length, making it a critical OEM replacement part for high-density configurations where clearance is a factor. This component replaces legacy part numbers 9001615005 and 042285-025, ensuring seamless water heater maintenance and restoring factory-spec performance. Whether you are servicing a Lochinvar JER-40 or a standard A.O. Smith electric water heater, this element provides the high-wattage output required for rapid heat transfer and long-term reliability in varying water conditions.

• Precision Fit: 8-1/8" compact length ensures compatibility with shallow tanks and tight internal geometries.
• Superior Heat Transfer: High-grade copper element construction minimizes scale buildup and optimizes thermal conductivity.
• Standardized Electrical Specs: Operates at 240 Volts and 4500 Watts to match common commercial and residential circuit requirements.
• OEM Reliability: Direct replacement for Lochinvar and A.O. Smith units, maintaining the original engineering integrity of the system.

Is this element compatible with high-lime or hard water areas?
While the copper construction offers excellent standard protection, we recommend regular tank flushing and anode rod inspection to maximize the lifespan of any 100108618 heating element in aggressive water conditions.

Will this work in a 208V system?
Installing a 240V 4500W element in a 208V system will result in significantly lower wattage output (approximately 3375W). It is technically functional but will result in slower recovery times; always check the rating plate before installation.

Can I use this to replace a 3500W element?
You must verify that your wiring and circuit breaker are rated for the increased amperage (approx. 18.75A) before upgrading to a 4500W element.

Note:
California Proposition 65 Warning: This product contains materials known to the State of California to cause cancer and reproductive harm. For more information, visit www.P65Warnings.ca.gov.

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.