Is the compressor pre-charged so that only the lines/evaporator have to be evacuated?

Yes, this outdoor condenser does come pre-charged from the factory with 3.92 lbs. of R410A refrigerant. The line sets used in installation will have to be charged with refrigerant. We strongly recommend that the installation and any adjustment of refrigerant levels is handled by a licensed technician. For more assistance, please give us a call.