Imma, "washer/dryer combo" is the correct US term : ) They use to be very common in this country in the 1950's and 60's with capacities approaching that of full size separate machines, but because they suffered from the inherent issues of a front-loader, and because American homes tend to have more available space for a machine pair, the benefits didn't necessarily outweigh the disadvantages and they are hardly seen today.
I have a 1961 GE combo I use occasionally, but usually line dry. The dry cycle uses lots of water (ventless) and isn't exactly fast.