Learn How Espresso Machine Works

As the title suggests, this article will mainly talk about how espresso machine work along with general information on whether to buy refurbished espresso machines or not? Also, this article will cover some benefits of coffee to make you understand the need for coffee and an espresso machine.

In this paced-up world, a cup or two of coffee is required to remain active and up to the mark. Many people have started treating coffee as essential as water. It doesn’t only satisfy our taste buds but also helps us in many things healthwise. Let’s glance at those benefits in brief.

  • Coffees boost our energy levels.
  • People who consume coffee regularly have a low risk of developing type 2 diabetes over an unceasing time.
  • Some research revealed that if coffee is consumed appropriately, it protects us against Parkinson’s disease, Alzheimer’s disease, and cognitive decline.
  • Coffee even lowers the risk of death by suicide as it is linked to a lower risk of depression.

These were the very few benefits of coffee. There are many more advantages like, it even supports our heart health, liver health, enhance athletic performance and much more. We can’t even count the benefits of the coffee on our hands. This is why coffee has managed to pave its way as an essential diet in daily life. However, we can’t always order a cup of coffee from the coffeehouse. Therefore, you need an espresso machine at your home to make the best healthy coffee.

The espresso machine will be your one-time small investment. It will surely save you a lot of money as you need not order coffee from the coffeehouse every time you want to have a cup of it.

Some of you may be in a dilemma about what an espresso is and how an espresso machine works?

Well, read along to know answers to your questions.

What is Espresso?

Espresso is an essential Italian drink that has now been embraced by coffee lovers worldwide. Basically, espresso is a strong black coffee made by forcing steam through ground coffee beans. In layman language, it is a method of brewing coffee to make small concentrated shots using high water pressure and finely ground beans. The end product has a rich and creamy flavour. Unlike other end products, it can be consumed as it is, or it can be used to make other coffee types such as latte, cappuccino, macchiato, long black, or ristretto.

Espressos have a thicker consistency and high level of  than filter coffees. It also has layers known as the body, heart, and crema.


The color of the heart layer is a deep rich brown. It is the bottom layer of the shot and contains the bitter qualities of the coffee.


The body layer is the middle layer of the shot and is caramel brown in color.


This is the layer on which you see different coffee arts. It is the sweet golden layer of an espresso shot. The cream is the top layer, and it is the layer from where the aroma and some of the finest flavour comes.

Now that we have understood what an espresso is, we will move forward to the next section, where we will discuss the working of an espresso machine.

How Espresso Machine Works?

Usually, we have heard people saying that the quality of coffee largely depends on the coffee beans used. This is indubitably true. However, it is also heavily determined by the performance of the espresso machine used. Good espresso machines can provide you with the best healthy coffee in the comfort of your home. So, let’s check an espresso machine undercover to understand its working.

First, let’s talk about the key terms that will be used in the upcoming section of the article to make you understand the working of an espresso machine.

Portafilter- As the name suggests, it is a filter where you put your ground coffee. It is used in making espresso by forcing water through the filter at ideal temperature and pressure. By this process, rich espresso is produced.

Dialing In- In order to get the best result, dialing in is used to tweak certain parameters of the brewing process. When brewing espresso, this might call for adjusting the tamp, the grind size, or the amount of coffee used.

Tamp- The tamp of the espresso machine should be good as it assists in dissolving more solids, creates necessary restrictions, and prevents water channeling. Basically, tamping is compressing the coffee to prevent the flow of water right through the coffee grounds.

Bars of pressure- In layman language, we can say that the bar is the unit of pressure. This unit is used to measure the pressure at which the coffee is extracted. It is suggested that the proper espresso needs 9 bars of pressure which is over four times as much as a car tire.

So far, we have understood the espresso and have started speaking its language. So. let’s now understand how the espresso machine makes the best healthy coffee.

Water and Pumping

As Stephen Kim, Beanscorp said, “Espresso has a long history, and nine bars is known to be the appropriate pressure used to extract the best espresso.” But to create these 9 bars of pressure, a pump is needed. You must be thinking, what does a pump do? The pump actually does all the work here. As we know, we can’t have espresso without water. And in an espresso machine, water either comes from a connected water line or from a small reservoir. You can shop home espresso machines that utilize either. But, how it is possible to get the water through the espresso machine? Now, here pump comes into the picture. Brewing espresso means the 9 bars of pressure are needed to extract the coffee. So, a pump is needed to create the right amount of pressure to force the water through the coffee.

There are two main types of pumps, and those are mentioned below.

  • Vibration pumps: These pumps are found in your espresso machines at home. This pump creates pressure only when you pull an espresso shot.
  • Rotary pumps: These are commonly used in commercial machines as they provide a constant pressure supply.


It is the most important feature of an espresso machine. Just like any other coffee, your espresso also needs the water to be at the optimal temperature to allow proper extraction. This is where the boiler is used. Water is catered into the boiler through a one-way valve, and then water is collected and heated in the boiler.

There are three major categories of boilers in the semi-automatic espresso machine, and those are as follows:

  • Single Boiler
  • Heat Exchange Boiler
  • Dual Boiler

Group Head

This is where the magic finally happens. It is the part in the front of an espresso machine. Here, the portafilter locks into place.

To create an espresso, when an espresso shot is pulled, the valve seats open. And, then the group head sends the pressurized hot water from your machine through your compressed coffee and out at the bottom of your filter. And, finally after lots of pressure, compression and mixing, espresso is created.

After this look beneath the hood, you hopefully have a better understanding of how an espresso machine works. Though the process may sound simple, a lot is going on in these cute little machines.

Now that we have covered the main section of our article, we will now talk about whether it is okay to buy refurbished espresso machines or not?

Whether to Buy Refurbished Espresso Machines or Not?


We understand that buying an espresso machine is quite an investment, and buying a used machine can be intimidating. You must be wishing for something new, shiny, and untouched. But, with Best Quality Coffee, you need not fear. Our refurbished espresso machines are taken care of by our espresso lovers. They want to make sure that you are able to make the best healthy coffee from the comfort of your home.

Moreover, the products that show immoderate wear and tear will never be resold. Whereas, the machines with enough life left in them that look next to new are offered at discounted prices as our coffee experts feel that they still have the chance to find a new home. Our factory refurbished espresso machines come with a one-year manufacturer’s warranty and are discounted upto 60%.

As aforesaid, espresso machines are a significant investment, so you must choose the one that fits best with your needs and budget. And, we, the Best Quality Coffee, strive to meet the need of all types of coffee drinkers. This includes refined connoisseur, the casual morning drinker, and all the way to the newbie drinker whose taste buds are still in the sharpening stage. As coffee lovers ourselves, we admire that everyone has their own individual taste when it comes to the morning or evening cup of coffee. So, to satisfy your coffee taste buds, check our website now and make the process of discovering new coffee flavours fun, convenient and cost-effective.

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