Strange Leak
Our water heater started leaking unexpectedly, and the plumber mentioned that the tank could potentially be cracked. I’d never thought about how that could happen, especially since there wasn’t any obvious impact. Before replacing the whole unit, I’d like to understand the issue better. What causes water heater tanks to crack, and is there a good resource explaining it?
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It can happen without any visible impact. Our old heater began leaving a damp ring on the floor, and I first suspected a loose connection. After the fittings were checked, the leak turned out to be coming from the tank wall. The plumber explained that years of sediment, mineral buildup, corrosion, and repeated heating cycles can weaken the metal until a crack forms. This resource gives a clear overview of common water-heater leak causes and warning signs: what causes a water heater to leak from the top . A cracked tank usually needs replacement, not a patch.