Automotive air conditioning repair

Automotive air conditioning refers to the system in your vehicle that controls the temperature in the interior of your car for you and your passengers. On a hot day you can rely on the auto air conditioning to keep you cool as you drive. However breakdowns can occur when you least expect them and you may turn on your cars air conditioner just to be disappointed. If this happens or you notice changes to the proper functioning of the air conditioner you should call a repair service company to fix your AC for you so you can get back to enjoying a cool breeze from your ventilation system.

The automotive air conditioning system is made up of five major parts: the compressor, the condenser, the evaporator, the expansion valve and the dryer or accumulator. These parts are interconnected using pipes and valves and use the medium refrigerant to transport heat to and fro. Refrigerant is also known as Freon or the modern type of refrigerant R-134a and the older version R-12.The refrigerant is a liquid and when it absorbs heat changes its state from liquid to gas. The refrigerant gas when cooled reverts back to liquid. In the compressor the refrigerant is compressed and it absorbs heat and changes into a gas. The refrigerant gas in the condenser is cooled back to liquid. Some condensers are fitted with electric fans. In the evaporator the refrigerant is a cool liquid and when air is blown across it to deliver cool air to your vehicles interior. The expansion valve is used to control the temperature of cool air that you want blown into your car so you do not have freezing conditions. The drier or accumulator removes any moisture from the refrigerant using filters and desiccant.

If any of these parts has a malfunction then you will need a qualified technician to do an initial diagnosis and to repair your AC. The technician will basically do a visual inspection of the system to see if he can detect any problems on the outside and he will then do a performance test where he will check how the AC responds when turned on and then he can check on the pressure of the various parts to see which parts have a problem with pressure. The pressure problems could be caused by air in the system, a hole in the pipes or a problem with the major components which would need to be replaced. The technician will also check for leakage using a special dye to detect where the leaks are. This dye is used because refrigerant evaporates when exposed to air and is therefore not easily detected as a leak. The technician on finding leaks will repair the parts and recharge the system.

The charges for fixing any leakages are usually high because refrigerant is not sold in amounts and the technician will be forced to buy the whole can of refrigerant even when he needed to add just a small amount to your AC to fix it.