Hand Washing vs Dishwashers

When we first moved to the United States, I remembered asking my mother why she wouldn’t use the dishwasher. She would tell me that while it did save some time, it was expensive to use. The water and electricity that it consume was not worth the 15 to 20 minutes it might save you in time. But dishwashers have come along way since I had that conversation with my mother over ten years ago. So are you better off using a new dishwasher than washing the dishes by hand?

I did a little research and I found this:

The Bonn study proves that the dishwasher uses only half the energy and one-sixth of the water, less soap too. Even the most sparing and careful washers could not beat the modern dishwasher. The study also rated the cleanliness achieved, again in favor of the washing machine (sorry mom). There have been studies before, but this is one of the few that stands (wo)man against machine and it sets itself apart by including a thorough analysis of the effect of half-loads and the whole demand range from your cake plate to the grimiest pots. Surf to research under household technology at U. Bonn’s site for more. :: U. Bonn Household Technology.

Even with the study done, I still don’t know what side of the fence I am in. Here are some thoughts I had after reading this:

  • The study was done by dishwasher manufacturers. How much did they invest on this study? Is it really unbiased?
  • Remember that it is talking about newer dishwashers. Specifically energy star approved models. If you have an older model dishwasher, you are probably better off washing by hand.
  • Everyone has a different method to wash dishes by hand. I know that some people keep the water running while washing while others fill the sink and many other ways. Not all methods where used to compare with the study.

So what do you guys think about dishwashers? Take a look at the study and let me know what you think.

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