- an A/C system component into which high-pressure liquid refrigerant flows and is temporarily stored and dehydrated, usually located between the condenser outlet and expansion valve.

- a chemical compound used in an A/C system to remove heat from the evaporator and transfer it to the condenser.

- any of the various designs of fittings that allow service tools such as manifold gauges to be attached to an A/C system.

- to remove refrigerant from an A/C system and store it temporarily.

Which of these is NOT a refrigerant used in automotive A/C sytems?

- a heat exchanger, in which low-pressure refrigerant flows and changes state, absorbing heat from the surrounding air and cools the passenger compartment.

a device, similar to a radiator, in which the refrigerant loses heat and changes state from a high-pressure gas to a high-pressure liquid as it dissipates heat to the surrounding air.

a valve that controls the flow of refrigerant from a high pressure area to a low pressure area

Why must refrigerant be recovered from the A/C system before any A/C parts are replaced?