How do coffee machines work?

In this brief guide, we are going to answer the question “How do coffee machines work” with an in-depth analysis of how coffee machines work. Moreover, we will have a brief discussion about the components of the drip coffee machine.

The coffee maker is one of today’s most common devices in homes. Many individuals drink coffee but have no time to concentrate on more intricate brewing methods. Fortunately, we use coffee machines to hoist us so that it’s as easy as pushing a coffee cup.

So if you are in search of an answer to how coffee machines work, then you need not worry as we are going to answer all your questions.

So without much ado, let’s dive in and figure out more about it.

How do coffee machines work?

All you have to do is fill up the pot and scoop in the correct amount of coffee. Afterward, the working of the coffee machine begins in the reservoir. You pour in and close your filtered cold water to do its job.

The water passes into the cold-water tube underneath the hole on the ground of the reservoir.

The cold water tube flows into the aluminum tube under the resistive heating element through a single-way valve. 

The water moves part of the way through the hot-water tube. When you switch on the heating element the coffee machine starts getting warm. The water in the aluminum tube will begin to boil after a couple of minutes.

Bubbles are generated by boiling water, which is large enough to pump hot water via the hot water tube through the coffee machine to the rod. The hot water is sprayed by the faucet so that the coffee is dropped. The warm water saturates the coffee ground with its aromas into your coffee pot.

Components of drip coffee machine

It’s presumably a drip coffee machine if you’ve got a coffee machine in your home. This type of coffee maker runs through the coffee before putting into your cup the resulting brush. It is a fairly basic device that takes all the trouble to make coffee.

Drip coffee machine components

Two pieces – the top and the bottom – have a drip-coffee machine separated. You would most likely discover similar pieces to just about any other coffee machine of its sort if you took your coffee machine apart. 

You can find the following at the top:

  • Reservoir
  • Hot water tube
  • Faucet
  • Drip area

The reservoir is a coffee maker’s largest component. It contains the water to be transmitted to the coffee. The water that you put into your machine. Coffee maker reservoirs can vary according to size. Some can hold more water than others, but they’re just a plain water bucket.

The hot-water tube is an isolated tube running from top to bottom of the machine. The tube is usually white and works as a means of moving water from one location to another.

The faucet is essentially a little shower over the coffee area, which sprays the water through the warm water tube. It guarantees that you saturate all the coffee grinds so that you may make your coffee cup of quality.

The drip area is the roller coffee separator. It is a little plastic piece with troughs in it that checks the rate of water that falls on the coffee field below.

You can find the following at the bottom:

  • The Tube of Cold Water
  • The Tube of Warm Water
  • Heating element
  • The valve of one way
  • The connection to the power cord

The cold water tube connects to a hole on the bottom of the reservoir on one side and the heating element on the other side of the tube. It receives the cold water and then transfers it on to be heated in the coffee machine.

On one side of the tube, the hot-water tube connects to the hot-water tube that goes through the machine to the tube in the heating element and on the other. It takes the water and transmits it to the coffee ground for sprinkling.

The heating element consists of two elements – a heating element resistant and a water-carrying tube. It is composed of aluminum and is used for heating the water. The cold water tube is connected to the hot water tube, which performs all the work.

Either in the hole of the reservoir or the heating element tube, there is a one-way valve. It makes sure that the water is continued in the appropriate direction through your coffee machine.

The power cord is just what you plug into the wall to power the machine. It’s the energy that works for all this. Without it, you would have no coffee.

You can read about different types of coffee makers here.


In this brief guide, we answered the question “How do coffee machines work” with an in-depth analysis of how coffee machines work. Moreover, we also have a brief discussion about the components of the drip coffee machine. 

If you’ve enjoyed ”How do coffee machines work?”, take a look at ”Can you put espresso in a coffee maker?” too.


Mahnoor Asghar is a Clinical Nutritionist with a bachelor's degree in Nutrition and Dietetics. She is compassionate and dedicated to playing her part in the well-being of the masses. She wants to play a fruitful role in creating nutrition and health-related awareness among the general public. Additionally, she has a keen eye for detail and loves to create content related to food, nutrition, health, and wellness.