DUAL BOILER / MULTI BOILER ESPRESSO COFFEE MACHINES
Dual boiler espresso machines are just what they sound like, machines with multiple boilers. Instead of a single boiler with multiple water paths, dual boilers feature separate brew and steam boilers. This allows a boiler to be ready at all times for either task. The upshot here is the removal of temperature as a cause for shot inconsistency. It’s nearly impossible for a barista’s shot prep to outrun brew boiler recovery on a machine like this. A dual boiler or multi-boiler machine allows you to steam and brew at the same time. Both boilers are temp stable at the required temp for each process, providing excellent consistency in both brewing and steaming. The only time this can change is, again, in high steam volume situations, such as trying to steam milk for 10 20oz. lattes in a row. The difference with a dual boiler is that this situation won’t cause brew temps to fluctuate and create inconsistent espresso.