Ruud-Marathon heating element doesn't work
I have an electric water heater, Ruud, Marathon 50-gallon, that doesn't work. Friend of my told my that the problem might be with the heating element. I don't know anything about water heating and before I ask him to check or replace the element I want to be sure that we are doing the right thing. What are the symptoms when the heating element doesn't work? Is it hard to replace it? Is it dangerous? Do we need any special tools? Is it expensive?