While selecting the commercial coffee machine, a common question that people ask is whether they should have the heat exchanger or the dual boiler. Both machines have different features and properties. It is important that you select the machine that meets your requirements perfectly. Here we have everything you need to know about heat exchanger and dual boiler that will help you make the right decision.

Dual boiler

In a single machine, you will get two boilers and they perform a separate function. One of the steam boiler has a higher temperature and the other is brew boiler that is set at low temperature. It will provide complete control over the temperature and so you will have consistent extractions.

Heat exchanger

There is a single boiler in the heat exchanger that is set at the steam temperature. The boiler will extract fresh and cold water from the source when you want to make your cup of coffee. The water will pass through the rod to heat up.



Here are some of the important features that you must consider while selecting a commercial coffee machine.


One of the most important things is the taste that will be developed by the coffee machine. The heat exchanger provides a better flavor and aroma to the coffee as compared to the dual boiler.


We all know that fresh water is the key to get the best flavor of coffee. There is a brew boiler in the dual boiler from which it draws water. It has special anti-bacterial manufacturing to keep the water safe. The heat exchanger uses water network and source to draw the fresh water.


Maintenance is an important factor to consider when you have to buy a commercial coffee machine.

  • In the heat exchanger, there is only a single boiler that you have to maintain
  • The number of parts that you have to maintain will be doubled in double boiler
  • You might require professional help for cleaning the dual boiler

4-Startup time

If we compare the startup time, the dual boiler will take longer to heat up. It only takes 20 minutes for the heat exchanger to properly heat up. On the other hand, double boiler might take 30 minutes or above.


The usage of both systems is the same, however; you have to draw some water to make the heat exchanger work if it has been idle for some time. You will only have to flush some water out of dual boiler if you want to clean it.

So which one should you select

The heat exchanger will be a be a better choice of the commercial coffee machine as it will maintain the heat of the cups so you will have more consistent shots. Even if it draws extra water for one cup there is nothing to worry as the temperature of the next cup will remain the same. Enjoy your perfect cup of coffee.