There are a few different ways that you can get hot water instantly. One way is to use an electric kettle. Electric kettles have a heating element inside of them that heats up the water quickly. Another way to get hot water instantly is to use a microwave. Microwaves have a built in heating element that can heat up water quickly. Finally, you can use a stovetop kettle. Stovetop kettles have a heating element that sits on top of the stove. The heat from the stove element heats up the water quickly.