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How Air Conditioning Works

Have you ever wondered how those big, noisy air conditioners keep your home cool and comfortable all summer long? The main thing that an air conditioner does is move heat from inside your house to the outside. It may seem like it’s creating cool air, but it’s just getting rid of the heat that’s already there.

Several different parts work together in an air conditioner to achieve this goal. First is the compressor, which compresses refrigerant gas and pumps it through the system. Then there is the condenser coil, which removes heat from the refrigerant as it passes through. This heat is then released into the outside air through the condenser fan.

Finally, the evaporator coils and blower fan work together to draw the hot air in your home up through the system and out of the house. As this process repeats over and over again, it keeps your home cool and comfortable all summer long!

How an air conditioner moves heat

An air conditioner has three main parts: the compressor, the condenser, and the evaporator. The compressor and condenser are usually on the outside of your house, while the evaporator is on the inside.

Compressor pumps

The compressor pumps a special refrigerant through the system. This refrigerant starts as a gas, but when it’s pumped through the compressor, it becomes a very hot liquid. The hot liquid then flows into the condenser, where it loses some of its heat. As the liquid cools down, it turns back into a gas and flows into the evaporator, where it absorbs heat from the air around it.


From the condenser, the refrigerant flows into the evaporator. The evaporator is usually located inside your house, mounted on either the furnace or an Air Handler Unit. As the refrigerant flows through the evaporator, it absorbs heat from the air around it and turns it back into a liquid.


As the refrigerant absorbs heat from your home’s air, that air becomes cooler and is circulated by your home’s fans. At the same time, the refrigerant picks up more heat and turns back into a gas. The process then starts all over again—the gas is drawn back into the compressor where it’s turned into a hot liquid and circulated through the system again. This process repeats over and over, keeping your home cool and comfortable on even the hottest days.


So next time you’re feeling cool and comfortable on a hot summer day, thank your air conditioner! By moving heat from inside your house to outside, it makes sure that you can enjoy a pleasant temperature all summer long. To learn more about how air conditioners work, and the different parts that make them up, check out Air Improve for more tips and tricks.

Get in touch!

If you have any questions about how an air conditioner works or would like to learn more about the different parts of an air conditioning system, please contact us today. We would be happy to help you explore your options and find the right air conditioning solution for your home.