How can my fancy new dishwashers “ECO” mode last 5 hours? How is that good for the environment?

Question

How can my fancy new dishwashers “ECO” mode last 5 hours? How is that good for the environment?

In: 9984

Answer 1

Cleaning action can be considered proportionate between soap concentration, temperature and duration.

You dish washer uses the same amount of soap, but less temperature so it needs to “soak” them for longer to get the same action.

Seeing as hearing the water takes a lot of energy and the pump takes much less, it is more economical to wash for longer at a lower temperature