When the water heater in your home goes out, you do not have what you need to take a bath or wash your face. You cannot bathe your baby or clean clothes or wash the dishes. A water heater replacement may be indicated or it might not be.
There are a couple of things to check, first, so you do not go out and spend the money on a hew one if you do not have to. You might check the heating elements, themselves, to see if they are working. You might also check the diode, located in the center of the tank. If you are getting low pressure, only, that might indicate a problem that...