The recommended temperature setting for a dishwasher's water heater is typically around 120 degrees Fahrenheit (49 degrees Celsius). This temperature is considered optimal for efficient and effective cleaning of dishes while also ensuring energy efficiency and safety.
At 120 degrees Fahrenheit, the water is hot enough to effectively dissolve detergent and remove food particles and grease from your dishes. It also helps to sanitize your dishes by killing bacteria and germs. Moreover, this temperature is considered safe for most households, as it reduces the risk of scalding accidents, particularly for children or individuals with sensitive skin.
However, it's important to note that specific dishwasher models may have different temperature recommendations.