While it is true that washing clothes in cold water can be effective, washing dishes in a dishwasher typically requires higher water temperatures for effective cleaning and sanitization. There are a few reasons why cold water is generally not sufficient for dishwashing in a dishwasher:
Grease and Food Residue: Dishes often have greasy and oily residues, as well as dried-on food particles. Hot water helps to break down and dissolve these substances more effectively, ensuring that they are properly removed from the dishes. Cold water may not have the same degreasing power.
Sanitization: Hot water is crucial for sanitizing dishes and utensils, killing bacteria, germs, and other microorganisms effectively. High water temperatures (usually above 130°F or 55°C) are needed to achieve the necessary sanitizing effect. Cold water may not provide the same level of sanitization.
Detergent Activation: Dishwashing detergents are designed to work optimally at higher temperatures. Hot water helps activate the detergent, allowing it to dissolve and distribute evenly throughout the dishwasher, providing better cleaning results. Cold water may not activate the detergent fully, leading to subpar cleaning performance.
Stuck-on Food Removal: Hot water softens and loosens stuck-on food particles, making it easier for the dishwasher's jets and sprayers to remove them during the washing process. Cold water may not be as effective at loosening and removing stubborn food residues.
While some modern dishwashers offer specific cycles or options for washing in cooler water temperatures, such as eco-friendly or energy-saving modes, it is generally recommended to use hot water for optimal cleaning and sanitization. However, it's worth noting that advancements in dishwasher technology, including improved detergent formulations and more efficient water circulation, have made it possible to achieve good cleaning results even at lower water temperatures. Always refer to the manufacturer's instructions and settings on your specific dishwasher model for the best practices.