It is depending on the age of the dishwasher. Age telling the signs that how much dishwashers are old and need to replace or exchange. Most of the dishwasher best ages that it might be used within 10 years and then its replace with someone another dishwasher. If you are not taking a good dishwasher at the time of purchasing its age is less than 10 if it is not upgraded properly and time to time. Upgrading is the best choice if you do not want to replace your dishwasher with the other one.