On a unit with a receiver/storage tank, a roof-mounted condenser, and an evaporator on the first floor, recovery should begin from the liquid line entering which component?

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The path of refrigerant in this system runs from the condenser to the receiver, and then the liquid line goes to the evaporator on the low‑pressure side. Recovery should begin from the liquid line entering the evaporator because that is where the liquid refrigerant is located. Starting there ensures you remove the liquid refrigerant first, which is the portion most readily reclaimed and can be overlooked if you only pull vapor from other parts of the circuit. Once the liquid is out, the remaining refrigerant will be in vapor form in the high‑pressure side and can be recovered from the appropriate vapor lines. The line entering the condenser carries vapor, not liquid; the suction line into the compressor carries low‑pressure vapor; and while the line into the receiver is liquid, the practical starting point for recovery in this setup is the liquid line entering the evaporator.