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How Does Car Air Conditioning Work?

Ever wondered how car air conditioning works? Then find out all about car air conditioning in our in-depth guide.

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How Does Car Air Conditioning Work?

Ever wondered how does air conditioning work? Your car's air conditioning system is a valuable feature year round, so it's important to keep it serviced, and knowing how car air conditioning works is a good start. So here's our guide on how it works and how to look after it!

How does air conditioning work in a car?

So let's break it down! Your car's air conditioning system contains a compressor which holds a refrigerant. The refrigerant is a gas. You may have seen the phrase 'airconditioning regassing available here'. The gas will need to be refilled occasionally to keep it functioning properly.

Step one: Liquification

When you flick the air conditioning switch on in the car, fresh air is brought in from outside and moves over the condenser. This fresh air causes the temperature of the gas to fall and in turn, liquefies the refrigerant.

Step two: Impurities removal

A drier then removes any impurities from the liquid refrigerant and is pushed through a thermal expansion valve. This valve is controlled by you when you turn the air conditioning up or down.

Step three: Evaporation

The cool air you feel coming through the system is the liquid in vapour form as it passes through evaporation coils. The gas refrigerant can then move back into the system and go through the whole cycle all over again.

Why should I recharge my air conditioning system?

Are you aware that your air conditioning system loses charge the more you use it? This loss of charge means it will be less efficient as time moves on, and your car will get warmer. At Halfords, we offer free air conditioning checks and can top up your refrigerant if needed.

What does an air con recharge include?

When you book an air con recharge with Halfords, we completely cleanse your air conditioning system which helps remove harmful bacteria and bad odours. We also check the pressures and quantity of gas in your vehicle's system. Then we will top the system up with fresh refrigerant, so your vehicle will have its optimum air conditioning running.

Can I recharge the air conditioning myself?

The short answer is no unless you are a qualified mechanic and have the right tools. The chemicals in refrigerant harm the ozone layer and so it's important that a professional checks and recharges the air conditioning unit to ensure minimal leakage and damage.

So now we have answered your question: How does air conditioning work in a car? You will be able to do basic maintenance and know how important it is to get the system recharged. It's always good to have a basic knowledge of your car's systems and the air conditioning unit is no different. Pop down to your local Halfords store to book in your free air conditioning test or recharge now.

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