Created 03/05/2023 at 03:36 AM

Air conditioners are an essential appliance for many people during hot summer months. But have you ever wondered how they actually work? In this article, we'll take a closer look at the inner workings of an air conditioner.

The Basic Components

An air conditioner has four main components:

  1. Evaporator: This is where the refrigerant absorbs heat from the air inside your home.
  2. Compressor: The compressor is responsible for compressing the refrigerant gas.
  3. Condenser: The condenser releases the heat absorbed by the refrigerant outside.
  4. Expansion Valve: The expansion valve regulates the flow of refrigerant into the evaporator.

The Refrigeration Cycle

The refrigeration cycle is what makes an air conditioner work. Here's how it works:

  1. Compression: The compressor compresses the refrigerant gas, which raises its temperature and pressure.
  2. Condensation: The refrigerant then flows to the condenser, where it releases the heat it absorbed inside your home. The refrigerant cools down and turns into a liquid.
  3. Expansion: The liquid refrigerant flows through the expansion valve, where its pressure and temperature drop. This allows it to absorb heat from the air inside your home as it flows through the evaporator.
  4. Evaporation: The refrigerant then turns back into a gas and flows back to the compressor, where the cycle starts all over again.

Air Handling

An air conditioner not only cools the air, but it also dehumidifies it. This is because as the warm air in your home flows over the cold evaporator coil, moisture in the air condenses on the coil and is removed from the air.

The air is also filtered as it passes through the air conditioner. This helps to remove dust, pollen, and other allergens from the air.


In summary, an air conditioner works by using a refrigeration cycle to absorb heat from the air inside your home and release it outside. It also dehumidifies and filters the air. Understanding how your air conditioner works can help you better maintain it and troubleshoot any problems that may arise.