La Marzocco Training Manual
The La Marzocco is set apart from most other espresso machines due to its two-boiler sys-
tem. Having separate coffee and steam boilers allows the machine to achieve and maintain
exceptional thermal balance.
Single boiler espresso machines’ brewing water comes from a heat exchanger located
inside the steam boiler. Brewing water temperature is solely dependent on the pressure of
the water in the boiler used for steaming. As the steam boiler’s pressure rises and falls dur-
ing normal operation so does the water temperature in the heat exchanger used for brew-
ing.
The LaMarzocco has a separate boiler for each function. A coffee boiler to heat water for
brewing espresso and a steam boiler used to generate steam for preparing milk and hot
water for tea or americanos. This two-boiler system allows for the perfect brewing temp
even if the steam boiler has been under extremely heavy steaming or water usage.
