TL;DR
An anode rod is the sacrificial magnesium or aluminum rod hanging inside a tank water heater that corrodes in place of the steel tank, because the more reactive metal gives up electrons first. It is the reason glass-lined tanks survive past their first decade, and a fully consumed one leaves the tank itself to rust through.
What it means
An anode rod is the sacrificial magnesium or aluminum rod hanging inside a tank water heater that corrodes in place of the steel tank, because the more reactive metal gives up electrons first. It is the reason glass-lined tanks survive past their first decade, and a fully consumed one leaves the tank itself to rust through. Plumbers recommend inspection every 3 to 5 years and replacement when the core wire shows, a service that can double tank life for the price of a part. A rotten-egg smell in hot water often traces to the rod reacting with sulfate bacteria, fixable with a powered or zinc-alloy version.
Where it sits in the glossary
Anode rod is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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