Water softener resin tank with its control valve next to a storage tank
Generic photo: రవిచంద్ర (Ravichandra) · CC BY-SA 4.0

Replace water softener resin (rebed the tank): when it is worth it and how

Resin wears out from chlorine (city water) and fouls from iron and sediment (well water). Before rebedding, prove the rest of the softener works: salt, brine draw, programming and bypass. Rebedding means bypass, depressurize, remove the valve head, dump the old resin, check the riser and distributor, refill with the specified volume of resin, reassemble, backwash and regenerate.

Cross-checked ~120 min moderateBrands: All

Before you start

  • Bypass, unplug and depressurize before loosening the valve head.
  • A resin tank full of wet resin is heavy; tip and drain it with help to avoid back injury.
  • Do not overtighten the valve head; follow the valve maker's torque guidance (Fleck states a 15 ft-lb maximum). Cross-threading the tank neck ruins the tank.
  • Dispose of brine and sanitizing water to a sewer drain, not onto a lawn or into a septic field if the local rules say otherwise.

Diagnostic steps

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