Depending on how often it is used and what kind of hot water dispenser it is, it may use less energy and cost less to run than a kettle. Here are some of the reasons: Energy-efficient technology: Hot water dispensers are made to be energy-efficient, and they often use cutting-edge technology to heat water quickly and effectively. Some types, for example, use thermoelectric or instant heating to heat the water as it comes out, so they don't need a big heating element to keep the water at the right temperature. Reduced heat loss: Hot water dispensers are made to keep heat in and lose less heat than kettles, which can help save energy. On the other hand, kettles can quickly lose heat when not in use, which wastes energy. Capacity: Hot water dispensers tend to hold more water than kettles, so they can be used more than once without having to be replaced and boiled each time. This can help save energy and lower the appliance's total cost to run. Ease of use: Hot water dispensers are made to be easy to use, which can make heating water faster and use less energy than kettles. Overall, a hot water dispenser may use less energy and cost less to run than a kettle, especially if it is used often or to heat up a lot of water. But it's important to choose a high-quality, energy-efficient model and follow best practices for saving energy, like turning off the dispenser when it's not in use and changing the temperature settings as needed.