Capacity planning
A size that fits your household
Turn your water use and hardness into a working-capacity target.
Calculate capacity WATER USE × HARDNESS × DAYS + RESERVEYOUR NUMBERS. CLEAR ASSUMPTIONS.
Bring your water use, hardness result, or utility rates. Both calculators run in your browser and require no account.
Capacity planning
Turn your water use and hardness into a working-capacity target.
Calculate capacity WATER USE × HARDNESS × DAYS + RESERVERunning costs
Add up salt, regeneration water, and maintenance using your own rates.
Estimate annual costs SALT + WATER + APPLICABLE EXTRASThe capacity calculator gives you a working-capacity target to discuss with a supplier. The running-cost calculator adds up the operating expenses you enter. Neither selects a particular model or predicts your controller’s actual schedule.
Use information from your own water test, model manual, and bills. The example inputs demonstrate arithmetic; they are not measured averages or recommended settings. Your results can be printed, and calculator entries are not sent to a server.