Dishwashers with a built-in water softener may need dishwasher salt. The salt regenerates the softener so it can continue removing hardness minerals from the water. If your dishwasher has no salt reservoir, do not add salt to it.
What Does Dishwasher Salt Do?
The softener uses an ion-exchange resin to reduce calcium and magnesium in hard water. Salt restores the resin’s ability to do this. The salt is put in its own reservoir, not scattered over dishes or added to the detergent compartment. Bosch explains the role of dishwasher salt.
The correct setting depends on your water hardness and model. If you already have soft water, the manual may call for a different setting or no salt use.
Why Not Use Table Salt?
Use the dishwasher salt specified by the manufacturer. Do not substitute table salt, sea salt or detergent in the reservoir. Grain size and additives can differ, and the appliance instructions take priority. Dishwasher salt is not sold for seasoning food. There is no need to claim that manufacturers generally dye it to discourage eating it.
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Does It Guarantee Spotless Dishes?
Softening can reduce limescale and help cleaning in hard-water conditions, but salt is not a cure for every mark. Loading, detergent, rinse aid and the condition of the glass also matter.
Automatic-dishwasher detergent is designed for machine washing; the aim is not to make it produce hand-soap lather. More foam is not evidence of better cleaning.
How Much Should You Add?
First confirm that the opening is the salt reservoir. Follow the manual’s filling instructions, including whether water is added before the first fill. Do not assume every tank has the same fill line or capacity. Whirlpool provides a model-dependent filling guide.
Close the cap securely and deal with spilled salt as directed. If the instructions require a cycle after filling, follow them rather than leaving salt on the tub floor.
When Should You Refill It?
Use the indicator and instructions for your machine rather than a universal one-to-three-month schedule. Consumption depends on the hardness setting and use. A low-salt indicator does not establish that every dishwasher stops operating. Bosch describes the low-salt reminder.
If a warning remains after the correct refill procedure, check the manual’s troubleshooting guidance. Do not keep adding salt to unrelated compartments or bypass the controls.
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