The amount of hot water a dishwasher uses can vary depending on the make and model of the dishwasher and the specific settings used during a wash cycle. On average, most modern dishwashers in the United States use around 4-6 gallons (15-23 liters) of water per regular wash cycle. However, this number can fluctuate based on the dishwasher's energy efficiency, load size, and cycle selected.
Newer, Energy Star-certified dishwashers tend to be more water-efficient than older models. These dishwashers typically use less water per cycle, often in the range of 3-5 gallons (11-19 liters). Some high-end models may use even less water, particularly those with advanced sensors and smart technology to optimize water usage.
It's worth noting that most dishwashers have options for different wash cycles, such as "light," "normal," and "heavy." The water usage can vary depending on the cycle selected. For instance, heavier cycles might use more water to tackle stubborn stains and heavily soiled dishes.
Additionally, some dishwashers offer a "half-load" or "eco" mode, which reduces water consumption when washing smaller loads. If water efficiency is a concern, look for dishwashers with good energy and water efficiency ratings when purchasing a new appliance.