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Rainsoft Water Softeners How to change the resin


The basic components of a water softener tank


To replace resin in most water softeners


  1. Turn off water
  2. Disconnect plumbing
  3. Unscrew control head
  4. Lay softener tank on side, or over trash can
  5. Insert garden hose
  6. Allow water to rinse the old�resin out.
  7. Discard old resin
  8. Save old gravel
  9. Stand tank upright
  10. Place tape over the opening in the product tube
  11. Refill gravel so it covers screen completely
  12. Pour in new resin until tank is 3/4 full.
  13. Remove tape on product tube
  14. Re-attach control head
  15. Re-connect plumbing
  16. Turn on water
  17. Put system in manual regeneration
  18. Test product waster for softness



  • Which resin do you need?
  • How much resin do you need?
  • 8% Standard Cation Resin (for 99% of softeners)
  • See all Softener Resins


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