The life expectancy of a Whirlpool dishwasher can range from seven to 14 years depending on factors such as care, cost, brand, and maintenance. Replacing your dishwasher can save you money in the long run, as repairing a dishwasher can be more expensive than buying a new one. Newer models, like the Whirlpool stainless steel dishwasher, offer lower water and energy consumption, better design, and quiet operation.