There are a lot of commercial espresso machines available in the market today. Some are suited for use in homes while some are used by espresso bars and cafes. A notable machine is the stove top espresso machine. It’s a common feature in many homes and is also handy to trekkers and travelers. Basically, the commercial espresso machines can be classified into home, semi-commercial and commercial machines. The main feature of distinction between the former two is the heat exchanger. No time is wasted in waiting while the water warms up in the semi-commercial one. Semi-commercials are differentiated from commercial ones by the powerful pump used in the latter.