Recognizing the warning signs that a water heater needs immediate replacement can prevent catastrophic property damage from sudden tank bursts. Key indicators include rumbling, popping, or banging noises from inside the tank caused by boiling water trapped beneath hardened sediment layers. Other clear warning signs include rusty or discolored hot water, fluctuating water temperatures, moisture pooling around the base of the unit indicating an internal tank leak or failing gasket, and a complete lack of hot water recovery. If the outer steel shell begins leaking, replacement is mandatory.
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