Exploring refrigerator materials: What’s Your refrigerator made of?

The refrigerator is one of the most important appliances in our homes. It allows us to keep food and drinks fresh by cooling its interior to low temperatures. But, how exactly does it achieve this?

In this article, you’ll discover in a clear and visual way the different parts of a modern refrigerator and how they work together to cool the fridge. By the end, you’ll be able to explain to your friends how this appliance keeps your drinks so cold!

Main Parts of a Refrigerator

As you can see in the infographic, the basic components inside a refrigerator are:

  • Compressor: Compresses the refrigerant to start the cooling process. It’s the heart of the system.
  • Condenser: Here, the refrigerant is cooled and condensed. It usually has fins to dissipate heat.
  • Capillary Tubes: Transport the condensed refrigerant to the evaporator.
  • Evaporator: Absorbs heat from the inside and cools the fridge.
  • Expansion Valve: Controls the flow of refrigerant to the evaporator.
  • Thermostat: Regulates the temperature by turning the compressor on or off.

Step-by-Step Operation

Now that you know the main parts, let’s see how they interact to cool:

  1. The compressor compresses the gaseous refrigerant, increasing its temperature.
  2. The hot refrigerant moves to the condenser where it releases heat and condenses.
  3. Through the capillary tubes, the liquid refrigerant flows towards the evaporator.
  4. Upon entering the evaporator, the liquid rapidly evaporates, absorbing heat from the interior and cooling it.
  5. The refrigerant in gaseous state returns to the compressor, and the cycle repeats.
  6. The thermostat regulates this cycle to maintain the desired temperature.

And that’s it! This is how the different parts of a refrigerator work together as a team to cool our food and drinks. Now you can explain to your friends how the fridge works.


Understanding how such a useful appliance as the refrigerator operates allows us to use it more efficiently. Knowing the function of each part and how they interact can help us detect any issues in time for repair. We hope this illustrated guide has helped you better understand the coolness!

Frequently Asked Questions

What is the most important part in a refrigerator?

The compressor is the most important part, as it compresses the refrigerant and initiates the cooling process.

What happens if the thermostat fails?

If it fails, the fridge won’t be able to regulate its internal temperature, leading to overcooling or undercooling.

What are the capillary tubes for?

The tubes carry the condensed refrigerant to the evaporator, controlling the pressure drop.

Can I replace damaged parts myself?

It’s not recommended, as you need to handle refrigerant and electrical components. It’s better to call a technician.

How long do modern refrigerators typically last?

Refrigerators have an average lifespan of 10 to 20 years, but with regular maintenance, they can last even longer.

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