To keep using what you have is an environmentally conscious way of thinking however, it does not apply to home appliances. Older appliances use more energy and water than newer appliances. Donate ineffective appliances to individuals for whom they are an improvement (or recycle them) and find Energy Star-certified substitutes.
The U.S. Department of Energy now wants producers of major home appliances to have their products tested for energy efficiency. The test’s outcome is displayed on yellow-and-black EnergyGuide labels, which record how much power the appliance takes and what the yearly operating costs may be.