A washer/dryer combo that works as a single unit, so that you don't have to move things manually from one to the other. I see it as a 2 story contraption, washer on top, dryer on the bottom. After the washer is done, a trap door opens and the clothes fall into the dryer, which then auto-starts. As you can guess, I was doing laundry recently
Already exists. These are the norm in Europe, I have no idea why they're not popular in the US. We Europeans enjoy mocking antiquated American home appliances and can't believe you still use stovetop kettles and blenders from the 1950s. http://www.gelighting.com/apo/products/appliances/clothes_ca... It looks like a regular washing machine, you just put your clothes in the front, set the buttons, and 2 hours later the…
I also think that they had some problems in the past, where the clothes didn't dry as well or that the machine could wash a larger load than it could dry. If you wash a full load and need to take some of the clothes out, a combo will lose some of its practical use. But that was years ago, so they have probably improved a lot.
If you have room for a washer, you usually have room for a dryer since you can just put the dryer on top of the washer (the dryer weighs nothing)