Depending on the system type -
A Freon gas - R134a (R12)
P.A.G Oil
High Pressure Pipes
Low pressure pipes
Compressor
Condenser + Condenser fan
Receiver/dryer - including a 'desiccant' type substance (Calcium oxide)
Expansion Valve or Orifice Tube
Evaporator
Geoff3bee
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