If you own a single-boiler coffee machine, you are probably aware of the waiting times it takes to switch between brewing and steaming modes. With this post we want to highlight the advantages that can be obtained with a dual boiler espresso machine.
DEFINITION OF BOILER
First, let’s define what a boiler is. It is a closed tank made of aluminum, steel or brass and equipped with a resistance inside that has the function of heating the water inside the boiler. The water always remains inside the boiler and only comes out when the coffee is extracted. The typical dimensions of a single boiler are about 250cc, although there are models of coffee machines characterized by boilers with dimensions of 325cc.
HOW DOES THE SINGLE BOILER SYSTEM WORK?
The single boiler system, used in domestic-type coffee machines, uses a thermostat dedicated to the extraction of coffee where the water reaches a temperature of 90 ° / 96 ° C. The temperature needed to prepare the steam requires higher levels. high, which reach 125 ° C. The single boiler coffee machine therefore requires a technical timing for passing from one temperature to another.
HOW DOES THE DUAL BOILER SYSTEM WORK?
Double boiler coffee machines require the use of two boilers: one is dedicated exclusively to heating the water for the coffee (95º) while the other is used to heat the water needed to obtain steam (125 ° C) and therefore being able to use all the tools to produce milk froth (cappucinatore, etc.).
ADVANTAGES OF THE DUAL BOILER SYSTEM
The advantages of using a double boiler coffee machine are many:
- Time savings: the two boilers work simultaneously and guarantee savings on waiting times for the transition from one temperature to another.
- Better temperature control: two independent boilers guarantee greater temperature stability with positive effects on the quality of the extracted coffee.
- Greater power: a boiler dedicated exclusively to steam allows for a higher supply power with very positive effects on the quality of the foam.
WHICH DUAL BOILER ESPRESSO MACHINE?
Dual boiler coffee machines are characterized by a higher price range than single boiler machines. However, we at Caffè Italia know how to direct you to three very valid dual boiler coffee machine models
RANCILIO SILVIA PRO X
One of the latest models launched on the market by the Italian company which wanted to enhance the segment of domestic coffee machines with a PRO X version equipped with a dual boiler system, two PIDs dedicated to controlling the temperatures of the two boilers, digital display and pre – “soft-touch” infusion.
VIBIEMME DOMOBAR SUPER 2B
Domestic coffee machine for more experienced users, Domobar Super 2B is made exclusively with professional components and is equipped with a dual boiler system that offers total control over the extraction temperature and steam delivery capacity.
THE SPAZIALE S1 VIVALDI
Semi-professional coffee machine equipped with two independent boilers: a 2.5-liter boiler for dispensing steam and a 0.45-liter boiler dedicated to infusion. Both boilers are completely independent, they switch on and off according to the needs of each and can be switched on at the same time.