The heated water in my home doesn't last through a 20 min shower & it takes hours for it to replenish the hot water in the tank. I have a 30 gallon tank in my home. It was there when I bought the house 3 years ago. I was told it was relatively new - less than 10 years old at that time.
I don't know if I need to replace my current water heater with a larger capacity water heater, or if there is just something wrong with it...maybe sediment. Any suggestions?