A water softener is a low-drama appliance: resin exchanges hardness minerals for sodium, a timed or metered regeneration rinses the bed with brine, and the whole loop repeats for a decade or more. The maintenance that keeps it that way is mostly checking, not fixing: salt level monthly, a look for salt bridging, occasional resin cleaning where iron is present, and a hardness test once in a while to prove the thing is still doing its job. Here is the schedule, and the short list of symptoms that mean a real service call.
The monthly habit: salt, and the bridge check
Keep the brine tank roughly half full of salt and check it monthly; consumption depends on your hardness, your water use and the valve's settings, so the first months teach you your own rate. While the lid is open, probe for a salt bridge: a hard crust that forms above the water line and holds its shape while the salt below is consumed, leaving the tank looking full while regenerations run without brine. Breaking a bridge gently with a broom handle restores the cycle. If your softener sits in a humid space or you use pellets that clump, bridging is worth checking for whenever soft-water feel fades.
The yearly habits: test, clean, inspect
Once a year, run a hardness test on a softened tap. Hardness is the amount of dissolved calcium and magnesium in the water, and a strip or drop kit reads it in minutes; the number should sit near zero grains, and a creeping result is the earliest honest signal that resin is aging or settings have drifted. The same annual pass is the time to clean the brine tank if sediment has accumulated at the bottom, to dose a resin cleaner where the supply carries iron (iron binds to resin and regeneration alone does not fully strip it), and to confirm the drain line runs free and the bypass valve still turns.
When it is a service call, not a habit
Three symptoms earn a professional visit rather than more salt. Constant or stuck regeneration, water running to drain for hours, points at a control valve or piston fault. Salty-tasting water after regeneration points at a brine draw or rinse problem. And hardness returning at full salt with a clean bridge check points at exhausted or fouled resin, which on an older unit is a rebed-or-replace decision. On that last fork, price the repair against the verified new-system prices in our index: resin and labor on an aging valve regularly land within reach of a new unit with a fresh warranty.
Questions people ask about water softener maintenance
How often should a water softener be serviced?
As a habit: salt and bridge check monthly, hardness test and brine-tank inspection yearly. As a paid service: only when symptoms call for it, or on the interval your installer's warranty requires.
How much salt should a softener use?
It scales with your hardness and water use, which is why the level check matters more than a universal number. A softener that suddenly stops consuming salt has usually bridged; one that races through it has usually been set to regenerate too often.
Why is my water hard again even though there is salt in the tank?
Check for a salt bridge first: a crust that keeps the tank looking full while brine never forms. If the bridge check is clean and settings are right, suspect the resin bed, especially on well water carrying iron.
Do salt-free conditioners need the same maintenance?
No. Template-assisted crystallization conditioners have no salt, brine tank or regeneration; their maintenance is a media change measured in years and a pre-filter cartridge on schedule. That difference is most of their sales pitch.