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By law, only an ASE certified tech working in an EPA certified shop is allowed to do this. This operation requires the AC system to be opened up, which requires the refrigerant to be evacuated from the system in a manner which prevents its release into the atmosphere and stored. Additionally, whenever an AC system is opened up, it will require the receiver-drier (if it's a Thermal Expansion Valve system) or accumulator (if it's a Fixed Orifice Tube system) to be replaced, as well.

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13y ago

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