There is not just one type of commercial espresso machine to choose from though of the different types, the stove top is one espresso machine that is very popular, especially among travelers and also amongst trekkers. In fact, the commercial espresso machine is generally graded as being fully commercial or semi-commercial. The main difference between the completely commercial and semi-commercial machine lies in the type of heat exchanger used and in the latter instance there is no need to wait for the boiler to heat up, while in the former case, there is a little time before the boiler heats up. You can also think about buying commercial coffee machines and for better choice it would pay to look online where you can be sure of finding wider variety as well as best prices. Pumps The fully commercial espresso machine is also different from the semi-commercial espresso machine in the way that its pump works. The former has rotary vane pump while the latter has a vibratory pump that is not as strong or large as the rotary vane pump. Another notable difference between the completely commercial espresso machine and the semi-commercial one is that the latter requires users to determine the quantity of water that is to be used. In addition, the user also needs to determine how much coffee beans are to be used and to also take care of disposing of used coffee machines. The semi commercial machines are also not as costly as the fully commercial espresso machine. The former only costs between thousand and two thousand dollars which is cheaper than the three thousand price tag of the commercial espresso machine. Typically, a commercial espresso machine will have both heat exchanger as well as a boiler to heat the coffee. The boiler may be separate in some varieties of these machines and so, in such machines it is not necessary to make the switch from one brewing mode to another. Among commercial espresso machines there are those that are pump driven, and those that are completely automatic. The pump driven commercial espresso machine is widely used in commercial bars selling espresso coffee and the better models of such machines even come with in-built timers. The automatic commercial espresso machine cost more than the pump driven ones. The quality of coffee produced is also a lot more consistent as compared to pump driven ones, and that is why these are more widely used in commercial establishments.