What Size Water Softener Do I Need?

Answer three quick questions — household size, water hardness and water source — and get the softener capacity that regenerates about once a week, the sizing pros actually use.

1. How many people live in the home?

Each person uses about 75 gallons a day; softeners are sized for roughly a week between regenerations.

2. How hard is your water?

From your city's water quality report or a test strip. Most homes on hard groundwater fall in the 8–14 gpg range.

3. Well water with iron staining?

Iron eats softening capacity — rule of thumb is to size up one step when you see orange staining.

Answer all 3 questions to see your match.

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