All about Auto Air Conditioning Repair

When the AC of your truck or car is not blowing cold air, most people would panic instantly. You would be thinking about the money to be spent on AC repair. However, you could be sure of one thing that you would be required to spend plenty of money on your auto AC repair. However, you could learn about making minor repairs to your vehicle’s AC and save considerable money. Regardless, you would be required to hire the services of reliable and competent Allplant Auto Electrics for major repairs.

Principles of AC repair

There have been books and publications that comprise comprehensive information on air conditioning repair. This information would often be too technical for you to learn. Therefore, hiring auto electrical services would be your best option. You would require knowing about the fundamentals of refrigeration. It would help you fix your auto air conditioning system on your own.


All air conditioners, regardless it has been an auto AC, home HVAC or household refrigerator, have been known to work on similar principles. A liquid refrigerant has been changed to gas and then back to liquid. In case, a change-of-state of the refrigerant has to take place, heat transfer should take place. The other rules that apply to refrigerant have been, foremost, refrigerant in a gaseous state collects, holds and absorbs heat and secondly, the refrigerant in a liquid state releasing the heat.

Operation and components of AC

For your auto AC to blow cold air, a refrigerant should pass through and change state in three components, foremost being receiver-dryer, and one expansion valve, which would make up the closed auto air conditioning system. The components of the system have been as follows.


A device pressurizes the heated refrigerant.


A radiator for refrigerant would transfer the heat that might be absorbed in the passenger compartment to the cooler air.



It is a small radiator located under dash in the passenger compartment. The liquid refrigerant entering the evaporator would create a pressure loss. The liquid refrigerant would absorb heat from the air blowing that blows across the evaporator. It would then boil and changes state to vapour prior to it entering the suction port of the compressor.


It is a canister storing the liquid refrigerant when the compressor is not running. It would comprise a desiccant that would remove moisture from the system.

Expansion Valve

It has been a metering device to control the amount of refrigerant to the evaporator.