Is it cheaper to run the dishwasher or wash dishes by hand?
Photo Credit: Courtesy of 3DStockPhoto (hand wash image)
Therefore, using the data above, if you wash up by hand for more than nine minutes, or use more than six washing-up bowls for your dishes, then you are likely to save more by fully loading the dishwasher up once. ... An energy-efficient setting uses around a third of the water that would be used when washing up in a sink.