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Air conditioning (AC) in an automobile can be one of the most troublesome of all repairs since the components are spread throughout the vehicle; all connected by expensive hoses.  So Freon leaks can be very difficult to locate which is why anytime we recharge the Freon in a vehicle we always add a green dye.  This dye can then be seen with a black light and filtered eye goggles.   To further  AC systems in an automobile are very similar to that system in your home; it conditions the air by throwing cool air either out of the vehicle (heat in vehicle) or visa versa.  The AC not only cools down the air but also reduces the humidity.  we’ll stick to the main points or a car’s air conditioning and the main parts used and a few hints to keep the air-con system running properly.

A number of people don’t realize that turning on the air conditioning actually reduces the number of miles per gallon of your car. There is energy used in removing the heat and moisture from the air in the car, and this consumes petrol because of the extra engine load.

Air conditioning’s main principles are Evaporation and Condensation, then Compression and Expansion. To the engineer and physicists they talk of thermodynamics – but we’ll explain it in our own way here: