Single-boiler espresso machines (or single-boiler, dual-use espresso machines) are similar to thermoblock espresso machines. Both can make espresso shots back to back. Both have a wait time when switching from coffee mode to steam mode (except lever models). The main difference is that single-boiler machines generally have better temperature stability compared to thermoblock machines. We at 1st-line Equipment, personally handpick the single boiler espresso machine models we carry. We evaluate each model on a number of factors. For instance, one of our most popular ones is the Rancilio Silvia espresso machine! We have been carrying the Rancilio Silvia since 1998 and our most current version is the Rancilio Silvia M V6. If you want a simple yet reliable espresso machine that produces excellent espresso, then this classic beauty could be the one for you! Not totally sure if you want to purchase a single boiler? Then check out the other types of espresso machines we have to offer!