When using a dishwasher, you should always add dishwasher detergent to cold water. Dishwashers are designed to use the detergent efficiently in conjunction with the water temperature and wash cycle settings to clean your dishes effectively. Here's why you should use cold water:
Detergent Activation: Modern dishwasher detergents are formulated to be most effective at breaking down grease, food particles, and stains in cold water. Using hot water could cause the detergent to activate too quickly and lose some of its cleaning power before it reaches the dishes.
Energy Efficiency: Using cold water in your dishwasher helps conserve energy because the appliance does not need to heat the water. The dishwasher itself will heat the water to the appropriate temperature during the wash cycle.
Safety Concerns: Dishwashers are equipped with heating elements that raise the water temperature during the wash and rinse cycles. Adding hot water to an already hot environment could potentially lead to scalding or other safety hazards.
Optimal Performance: Manufacturers design dishwashers to operate efficiently and effectively with cold water and the appropriate amount of dishwasher detergent. Using hot water might not yield better results and could even lead to excess suds or other issues.
So, to get the best cleaning performance and conserve energy, always add dishwasher detergent to cold water when using a dishwasher. Additionally, be sure to use the recommended amount of detergent specified by the detergent manufacturer and your dishwasher's user manual. Using too much detergent can lead to excessive suds and may not result in cleaner dishes.