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3 guides

Choosing and sizing

Size by your water and household, not by the number on the box.

hand holding a hardness test strip beside an open residential brine tank
hand holding a hardness test strip beside an open residential brine tank
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What size water softener do you need? A two-minute formula that beats the dealer's guess

Size a water softener in two minutes: people x 75 gallons x (hardness + iron) x 7 days. See why a "32,000-grain" box actually delivers ~20,000 usable grains.

Read it, 7 min

Size it for your house.

People, hardness and iron in, the real capacity and the size to buy out.

All choosing and sizing guides.

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