How to adjust the hardness of a kenmore water softener

October 19, 2017Blog Standard

Kenmore Water Softeners remove the iron and other chemicals in the water. As the water enters the brine, the grains in the brine is the hardness of the water. The result is water flowing through your faucets and showers. It is important to keep the hardness level set to prevent water which is very difficult which can result in corrosion of plumbing pipes. Adjusting the Hardness of a Water Softener Kenmore requires knowing certain conditions from your house water analysis report.


  1. Press and release the right center of the “Select” button with your finger. The center display will flash a number with the word “Hardness” in the number.
  2. Look for water analysis Report adjustments in your owner’s manual for softeners or on a label inside the softener lid. They look for grains per gallon (gag) hardness number and parts per million iron. If you do not have a water analysis, contact Sears to have it checked out.
  3. Multiply the parts per million iron in the water by five. For example if water has three ppm of iron, multiply three by five for a total of 15.
  4. Add the amount of iron to the hardness number. For example, if you have a gpg hardness of three and 20 ppm iron, add 20 plus 15 for a total of 35.
  5. Press the directional pad up and down the buttons until the display flashes the correct number. Press the “Select” button and exit programming mode.

Tips & Warnings

  • Normally the larger the setting, the softer the water.
  • Although Sears sells Kenmore water softeners, you may have a water service professional give you a water analysis.

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