There are a few signs that it might be time to replace your refrigerator, even if it's still working. For example, if your fridge is more than 10 years old, it might not be as energy efficient as newer models, which could end up costing you more in utility bills. Additionally, if your fridge is making strange noises or leaking water, it's probably time for an upgrade. Of course, the best way to know for sure is to consult with a qualified appliance repair person. They will be able to diagnose the problem and advise you on whether it's worth repairing or replacing your fridge.