Your Audi A/C system has many components which help provide you with a cool and comfortable interior. The main function of the A/C system is to extract hot air circulating inside the passenger's cabin and replace with fresh cool air. The Audi Expansion device helps regulate refrigerant flow according to how cool you want it inside your car. If you want it to be colder, the Expansion device expands to allow more flow of refrigerant into the system and when you prefer it not to be as cold, it shrinks and slows down the flow of refrigerant.
If you feel your A/C system is acting unordinary, you should check the issue to protect your car's Air Conditioning system. At Discount AC Parts you can find the highest quality car parts at wholesale prices. We provide OEM replacements and aftermarket parts. All our car parts undergo a quality control process and come with a full warranty.