Capacity of a Water Softener

Capacity of a Water Softener

How many gallons a softener will approximately make depends on the hardness of the water source and your water usage. To figure out the approximate capacity of your unit, take the grains of the unit (Standard 8,000/Double 16,000) and divide that by the grains per gallon (GPG) of the water source.

Standard Softener
8,000 / 11 GPG = 727 gallons
8,000 / 58 GPG = 137 gallons

Double Standard Softener
16,000 / 11 GPG = 1,454 gallons
16,000 / 58 GPG= 275 gallons

If you go too long before performing the regeneration process, a few things could happen: your unit may not last very long, or, after the regeneration process, the strips will not test between 0-3 GPG at the output of the softener. This can easily be corrected by performing a special regeneration process.