I live in a big apartment complex and the apartment pays for water & sewer, our water heater won't allow us to take showers longer than about 15 min. I'm a girl, I need longer showers sometimes... I try to be quick but its just not long enough sometimes..
I know the water heater is big enough, and I can see on the top of it that it says its been installed with an energy saver, so I'm thinking that's the problem, after about 15 min it stops the hot water from coming out, and I'm left to rinse in cool water.
Does anyone know a way to uninstall or remove the energy saver from the water heater? Or anything else I can do?

Doesn't sound like the energy saver. Sounds like a bad thermostat or heating element. I'm a guy but a 15 min shower seems long. Takes me 3-5 minutes. I guess I just don't understand women lol