Yes, a dishwasher uses hot water to clean the dishes effectively. The hot water helps to dissolve and remove food residues, grease, and stains from the dishes. Most dishwashers are designed to connect to your home's hot water supply, typically using water heated by your water heater or boiler.
The temperature of the water in a dishwasher can vary depending on the selected cycle and settings. Many dishwashers have multiple wash cycles, and some allow you to adjust the water temperature manually. Generally, dishwasher cycles use water at temperatures ranging from around 120°F (49°C) to 160°F (71°C).
Hot water is essential for the dishwasher's cleaning process because it aids in breaking down and removing stubborn food particles and grease from dishes, ensuring a more hygienic and effective wash. Additionally, hot water helps to activate and enhance the performance of dishwasher detergents, allowing them to work more efficiently in dissolving and removing grime and stains.