human
How do I know if I need to replace the water heater in my house?
assistant
You should check the age of your current water heater and consider replacing it if it is over 10 years old. Additionally, you may want to look at how often you use hot water and compare that to the capacity of your current water heater. If you find that you are using more hot water than your current unit can provide, then you should consider replacing it with a larger model.