The air conditioning system of the Chrysler Town & Country is a sealed system and should never leak refrigerant, unless there is a leak in the system. When a leak or failure of the system occurs, the refrigerant in the air-conditioning system must be recharged. Recharging any R134a air-conditioning system does not require a special certification, unlike R12 Freon, but it does require a charging station to be certain the proper refrigerant levels are achieved. The actual charging process is relatively simple.
Open the Town and Country’s hood and look on the rear of the air-conditioning compressor, the pulley-driven component at the bottom, driver’s side of the engine. Trace the thicker of the two lines from the rear of the compressor until you locate the low-pressure service port, a metal valve sticking from the line.