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It's useful to see the others, not sure how useful it would be to see inside a dishwasher. Could be fun though. Also probably is cheaper not to have it and could be better insulation.
Same reason fridges probably don't have windows even though that'd actually be handy. I once saw someone post about how their really expensive fridge actually has a window, but their mom put a curtain in front of it because seeing inside the fridge looked "messy". What a travesty
Washing mashines have a window though.
If you open a front-load washer in the middle of its wash cycle, it would dump 5–10 gallons (editors note: however much that is) of dirty, soapy water all over the floor. That's bad - so the manufacturer designs a window so that you can see that the machine is empty of water before opening the door.
I guess it's for that reason. Dishwashers could have similar problems but they might have a lot less water in them at one time and with the type of doors they have you might not dump as much on the floor or something.
Dishwashers don't fill up - they just have a well at the bottom (below the height of the door) and they spray water over the dishes to rinse of the dirt.
Washing machines need to fill up and soak the clothes so that they get everywhere, not just the outer layer.
I was thinking that was the case. So makes sense why one would have a window and one doesn't, from "spilling water on the floor" sense.
No they don’t, that’s why front loaders use so much less water
- a top loader fills up the tub so the clothes are under water
- my front loader
— slaps the clothes into the puddle of water to clean
— to soak, lightly sprays on top while tumbling back and forth so they all get wet without ever being under water
You can safely open a dishwasher at any time.
Not true if I do it in the middle of a program my wife will beat my ass
Front loading washing machine doors are automatically locked during the wash cycle.
They often have an emergency release mechanism (pull string behind a cover or similar)
Some are. Modern ones definitely, older ones most likely. Not all though. Guess how I know...
Also I wonder what the situation was at the time they introduced those glass windows.
My dishwasher can be opened at any time. The sprays stop instantly and the small amount of water can just sit there
My front loading washer also has a small amount of water that seems like it would just sit there if I could open the door. However the door is locked whenever it is spinning
That's a clothes washer, not a dish washer
Yes, but connecting to your statement, is it useful to see inside?
Btw, why do they have one?
Edit: Kusimulkku answered that nicely.
Not all clothes washers have a window,. though it is more common than on dish washers. No it's not that useful.
Only side loading ones. You don't need a window for top loading ones and none have it.
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modern top loading washers have windows. I've seen dozens of them