The Air Conditioning system has many components in it. The A/C Accumulator/Drier has a very specific function. It is also referred to as a receiver-drier. The A/C Accumulator/Drier contains thermal expansion and liquid refrigerant. The function of the A/C Accumulator/Drier is to separate the liquid and the gas. The secondary purpose of the Accumulator is to absorb the moisture that is found in the air and to remove dust.
Accumulator/Drier is used to accumulate the liquid and temporarily the gas. There is a sight glass in the Accumulator/Drier which must not show any bubbles. If any bubbles are visible, the Accumulator Drier is damaged and you need to get it replaced. If the Audi A/C Accumulator/Drier does not work properly, your A/C system will not function properly. Since its role is very important, it should be checked at regular intervals. Discount AC Parts is the best place to come for quality replacements. We provide only OEM replacement and aftermarket parts and we do not deal with junkyard parts. All our car parts come with an industry leading full warranty.