How Do Drip Filter Coffee Machines Work? If you're not familiar with this kind of coffee maker, you could be surprised to find it has so many components. It starts with a reservoir that has water tubes leading up to it, and an internal heating element which heats the water. https://www-coffeee-uk17012.uzblog.net/20-things-you-should-be-educated-about-drip-coffee-44527680