The automatic coffee machines are classified in coffee semi automatic and fully automatic. How are they different? In the coffee semi automatic, the user controls the amount of water and also have to delete and dispense coffee grind. It also heats the milk with milk heater. With fully automatic coffee machines, water that is used can be set previously, choosing two options, double or only automatic coffee machines also offer the automatic coffee dosing. Coffee is ground, dosed and is prepared automatically. In the coffee machine automatic semi used in homes and small offices or small restaurants. Another important difference heat exchanger. In the coffee single automatic semi there is a boiler to heat the water and prepare steam obtained from the steamer. There is an additional caldea enabling overall steam without disrupting the water heating in automatic coffee machines.