Water Softener Size Chart

This water softener size chart [sizing chart] recommends the best water softener and resin tank size and capacity with an average water hardness of 10 GPG.

Gallon/DayGrain/DayGrain/Regeneration (1 Week)Softener Capacity (Grain)Resin Tank (Cubic Feet)
2002,00014,00016,0000.75
3003,00021,00024,0001.0 or 1.5
4004,00028,00024,000 or 32,0001.0 or 1.5
5005,00035,00032,0001.5 or 2.0
6006,00042,00040,0002.0
7007,00049,00048,0002.0 or 3.0
8008,00056,00056,0003.0
9009,00063,00064,0003.0
100010,00070,00064,000 or 80,0003.0 or 4.0

Note:

  • We take an average water hardness of 10 GPG (for hard and very hard water)
  • We recommend regeneration is 1 week for the best performance.
  • It depends on your water hardness, your demand of water-consuming to have your properly water softener size.
water softener sizing chart

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