Primo"s innovative bottom loading water cooler gives you instant access to fresh, pure icy-cold, cool and piping hot water and is perfect for families seeking convenience, performance and style. The bottom loading design allows you to simply slide the bottle into the cabinet of the water cooler and attach the probe to have access to 99.99% pure Primo Water. The water is automatically pumped into the cold and hot tanks, but the energy saving switches allow you to turn off the hot tank if you want to preserve energy when you are not using it. The indicator lights on the dispenser will tell you when the dispenser is cooling and heating and will also let you know when it is time to change the bottle.