Method for Evaluating Energy Use of Dishwashers, Clothes Washers, and Clothes Dryers
Building America teams are researching opportunities to improve energy efficiency for some of the more challenging end-uses, such as lighting, appliances and miscellaneous electric loads, which are all heavily dependent on occupant behavior and product choices. These end-uses have grown to be a much more significant fraction of total household energy use (as much as 50 percent for very efficient homes) as energy efficient homes have become more commonplace. As modern appliances become more sophisticated the residential energy analyst is faced with a daunting task in trying to calculate the energy savings of high efficiency appliances.
This methodology, however, does not account for occupant behavior, such as:
- Using only cold water for clothes washing
- Hot water distribution system losses
- Dryer energy needed to heat a load of clothes to the point where moisture in the wash load begins to evaporate
- An undersized clothes dryer in proportion to the clothes washer drum capacity
You can coat your house in energy-efficient appliances, but you have to make some efforts in being green, as well.