Recognizing that a water softener has reached the end of its functional service life involves monitoring several key warning signs. Major indicators include hard water symptoms returning persistently (soap failing to lather, spotted glassware, dry skin) even after adding salt and regenerating, the system being over 10 to 15 years old, frequent mechanical breakdowns requiring expensive service calls, a cracked mineral tank leaking water onto the floor, or sudden drops in household water pressure caused by internal media failure. Verification: Evaluate repair estimates against the "50% rule" (replace if repairs exceed half the cost of a new unit).
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