We recently had a water loss come in from the supply lines of a refrigerator. The homeowner had asked what he could have done to prevent this from happening. The short answer is to simply replace your supply lines about every five years according to the industry standard.
Now to go into more detail the warranty on your appliances is five years. However, the warranty on your supply lines is only a year. So, our advice to you is to change your supply lines about once a year but it could be between 1-5 years. Supply lines are made up of two different materials. You have a copper supply line where they use pressure fittings to pressure fit it to the back of the appliance. You also have one that is a rubber hose with a mesh outside to try and keep it from splitting and causing problems.
Here at SERVPRO of Winston Salem North, we do this to educate our customers. We want our customers to learn the maintenance in their homes but also want them to know we are here when disaster strikes.