
You’ve probably seen it: dishes that seem clean but emerge from the dishwasher with an annoying white film. Many assume the culprit is hard water or low-quality detergent. While those are valid suspects, there are also important technical reasons that are often overlooked.
If you’re using good detergent and rinse aid, and your water is being softened properly, the issue may lie deeper—in the mechanics of the dishwasher itself.