Although it looks simple, each variation of the boiler and heat exchanger also has a different way of working. If you have your espresso machine or are familiar with espresso machines, then, of course, you have also heard of the boiler feature in the coffee machine. To be more explicit about each variation of the boiler and heat exchanger, the article that we will provide this time may provide additional information.
1. Single Boiler
This espresso machine only has one boiler or single boiler, so the extraction and steaming process cannot be carried out at the same time because it only has one boiler. This single boiler machine is perfect for making espresso. While you want to mix coffee with milk, such as making lattes, cappuccinos, and so on, it must be done alternately.
Pros: The advantage of this single-boiler espresso maker is that it is not too expensive, less than 10 million, so it is suitable for cafes with a minimalist or simple concept. At the same time, the boiler is usually also portable so that it can be carried easily.
Disadvantages: The disadvantage of this espresso maker is that it takes a few minutes between the extraction and steaming process but will save more time and is also used to make cappuccino or other espresso-based.
2. Heat Exchanger
The heat exchanger is an additional feature in espresso makers with several single boilers, so not all espresso machines are also equipped with this feature. An espresso machine with a heat exchanger can be seen from the presence of pipes or tubing, which will then pass through a boiler called a heat exchanger.
This espresso maker is specially designed so that the water used in the extraction process is not heated in a different boiler with a single or double boiler system. If water is needed for espresso extraction, it will be pulled by the machine and then taken from the tubing or heat exchanger. In the tubing, the water will be heated until it reaches the required temperature.
Pros: Its function is almost the same as a dual boiler but can make it easier for the boiler so that you don’t have to do brewing and steam simultaneously. Many users also argue that this espresso maker makes the water not stored for long in the boiler, and the water does not have a strong iron smell.
Disadvantages: Many people think that this espresso machine can be damaged if used for a long time and can no longer maintain a consistent temperature for extraction.
3. Double Boiler
This espresso maker, also known as a dual boiler, has two separate boilers to maintain the extraction or brewing temperature and one more boiler for the steaming process. This machine has a stable temperature. The two boilers in this espresso machine can also be used simultaneously to be faster and more optimal.
Pros: Almost all espresso makers with double boilers are equipped with separate control buttons and digital timers that are easy to use and make adjusting the temperature for the brewing and steaming process. In addition, the temperature also remains stable and fast, making it suitable for large and crowded cafes.
Disadvantages: The drawback of this espresso maker is the machine’s price, which is relatively high even though it is balanced with the quality.