This invention describes an intelligent water heater controller that can use many inputs to learn the behavior of user over time. The controller is then able to predict when hot water is required and is able to turn the water heater on or off intelligently or to increase or reduce the water heating element so that the hot water is available when needed while reducing the energy consumption. User is able to communicate with the water heater controller via smart phone, tablet or computer remotely and change and parameter or configuration of the controller. The controller is also able to communicate events to the user's smart phone, tablet or computer.