Dishwashers generally have an expected lifespan of approximately 10 years, so it might be wise to replace a Bosch dishwasher once it reaches approximately eight years of age if it needs repair work. However, even older appliances in good condition might be worth replacing due to their poor efficiency.
Dishwashers consume a significant amount of energy when they run, and newer models tend to offer more efficient operation. While dishwashers are not rated for efficiency like other appliances, newer technology allows them to work while using less water and electricity. Homeowners who are considering selling their homes may want to upgrade as well.