Dishwashers are a mature technology that is experiencing ongoing minor water and energy efficiency improvements. Clotheswashers in the U.S. are predominantly vertical axis top loaders. A transition to predominantly horizontal axis machines should be expected for reasons of vastly improved water and energy efficiency and superior cleaning. Horizontal axis machines are the primary type used in Europe and Japan. The most efficient refrigerators must be special ordered from small companies.
Major manufacturers do offer efficient models, however.
Efficient dishwashers are made by major U.S. and European manufacturers. Major U.S. manufacturers of clotheswashers started reintroducing horizontal axis machines in 1992. European models are also available. The initial cost of all the energy efficient appliances is higher than conventional models. The front loading aspect of many horizontal axis machines can be less desirable for many people due to the bending required to put clothes in and out of the machine.