Lochinvar & A.O. Smith 100109594 Anode

Maintain peak tank integrity with the Lochinvar & A.O. Smith 100109594 Anode, a critical sacrificial component engineered for high-performance water heating systems. This 33-inch aluminum anode rod features a 3/4" NPT connection and a 0.75" diameter, providing a significant surface area for electrochemical protection against tank corrosion. As a genuine OEM replacement part, it is the direct factory successor for obsolete part numbers 9003892005 and 183523-0. This water heater anode rod is specifically optimized for applications in hard water environments, where aluminum’s reactive properties efficiently neutralize corrosive elements before they can compromise the interior steel lining. By installing this corrosion protection rod, contractors ensure compatibility with top-tier Lochinvar and A.O. Smith water heaters, including select LT(A) and LM(A) models. Regular replacement of the 100109594 anode is standard practice for professional preventative maintenance, effectively extending the service life of commercial and residential heating units by preventing premature tank failure.

Key Benefits:

• Direct OEM Compatibility: Engineered as a precise fit for specific Lochinvar and A.O. Smith units, replacing legacy part numbers 9003892005 and 183523-0.
• Hard Water Performance: Aluminum construction is highly effective at mitigating scale and corrosion in regions with challenging water chemistry.
• Robust Dimensions: The 33-inch length and 0.75-inch diameter provide extensive sacrificial material for long-term tank wall protection.
• Secure Installation: Features a standard 3/4" NPT hex head thread for a leak-free, reliable seat during routine maintenance.

Common Questions:

When should this anode rod be replaced?
Technicians generally recommend inspecting the 100109594 anode every 12 to 24 months. If the rod is depleted to more than 50% of its original diameter, it is no longer providing adequate protection and must be replaced.

Is this part compatible with other brands?
While the 3/4" NPT threading is industry-standard, this specific SKU is a factory-authorized part for Lochinvar and A.O. Smith systems. Always verify the height clearance and technical specifications of your specific tank before installation.

Why choose aluminum over magnesium?
Aluminum anodes like the 100109594 are often preferred for water heaters operating in areas with high pH levels or where "rotten egg" odors from sulfur-reducing bacteria are a concern, as they offer stable protection without intensifying smell issues.

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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.