Single circuit, dual circuit, dual boiler or instantaneous water heater? Kundendienst Sandra Updated 14 January 2020 21:35 Follow What do these terms mean, and which espresso machine is right for me? We are happy to help you choose the right machine. You can find our entire range of machines here. And you can find out which espresso machine is right for you in our guide. Related articles Contacting Coffee Circle and the Coffee Circle Café Eureka Mignon MCI is no longer working, it's blocked How do I clean and descale the Rancilio Silvia? Is there a Coffee Circle café? Why does the Rancilio Silvia have hoses of different lengths? Comments 0 comments Article is closed for comments.