Bosch offers a line of 24 inch wide compact washers and dryers that are stackable. The dryers don't require vent ducts, and some models are available with a reversible door, allowing for placement in closets and other tight spaces.
Bosch offers a standard stacking kit and an upgraded kit that includes a pull-out tray. The stackable units wash and dry a small load of five shirts in 30 minutes. As of 2015, the washers have a capacity of 2.16 cubic feet, enough to clean up to 18 bath towels. The washers plug into the dryers, saving the need for an additional power cord and outlet.