Dual Boiler

Dual Boiler

Dual Boiler (DB)

Finally, in some espresso machines for commercial or home use, water for brewing is heated in a separate chamber, which requires two separate boilers. This is found primarily in higher-end machines, though it is also found in some mid-range machines, overlapping with HX.

The term "Dual Boiler" is used narrowly for machines with two separate boilers, and more broadly for what are more properly called "Dual Heater" (DH) machines featuring a boiler for brewing and a separate thermoblock (TB) for heating brew water to steaming temperature – opposite to HX machines, where the boiler is at steaming temperature and is cooled to brewing temperature.

In principle, TB machines yield stabler brew temperatures at the expense of steaming performance and speed, while HX machines yield better steaming at the expense of stable brew temperature. True DB machines provide stable brew temperatures and fast steaming, but are larger and more expensive.

The first DB was the La Marzocco GS of 1970.

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Rocket R NINE ONE    Espresso Coffee Machine Special Offer

Rocket R NINE ONE Espresso Coffee Machine

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ACS Minima Dual Boiler Coffee Machine

The smallest coffee machine dual boiler on the market.


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High technology espresso machine with complete control to produce an espresso that’s exactly as you want it. With Mina, you can have it!


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Profitec PRO 300

The Profitec Pro 300 is a dual boiler coffee machine, with a small footprint, temperature control and boilers that warm up in 5 minutes.

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Profitec Pro 600

The Pro 600 is a dual boiler espresso machine with a PID display and a small footprint, making it perfect for any kind of space.

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Profitec PRO 700

The Profitec Pro 700 is a dual boiler espresso machine with an E61 group head, silent rotary pump, and a built-in PID and shot timer that can be either direct-plumbed or run on its internal reservoir.

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