Yes, some dishwashers do require salt, especially in areas with hard water. The salt is used to regenerate the water softener in the dishwasher, which helps prevent the buildup of limescale and ensures the dishwasher functions properly.
When water is classified as "hard," it contains higher levels of minerals like calcium and magnesium. Over time, these minerals can accumulate and form limescale deposits on the heating elements and interior surfaces of the dishwasher. This can lead to reduced cleaning performance and may even damage the dishwasher in the long run.
The salt used in dishwashers is not regular table salt (sodium chloride). Instead, it is specifically designed dishwasher salt that is higher in purity and does not contain any additives. This type of salt is available in the form of granules or pellets, and it goes into a dedicated salt compartment in the dishwasher.
If your dishwasher has a light indicating that salt is needed, it's essential to follow the manufacturer's instructions and add the appropriate dishwasher salt as recommended. This will help keep your dishwasher in good working condition and ensure your dishes are cleaned effectively.
However, it's worth noting that not all dishwashers have a built-in water softener or require salt. In some cases, the light indicating salt might not apply to your specific dishwasher model. If you're unsure about whether your dishwasher needs salt or how to add it correctly, consulting the user manual or contacting the manufacturer's customer support can provide you with the necessary information.