The MRCOOL NV35-3834-O No-Vac Pre-Charged Line Set is a refrigerant line connection designed for compatible MRCOOL ductless mini-split HVAC systems. Pre-charged with refrigerant, it eliminates the need for vacuuming during installation, allowing for a faster and more convenient setup. This line set securely transfers refrigerant between the outdoor condenser and indoor air handler, en... https://www.partshnc.com/mrcool-nv35-3834-o-35-ft-pre-charged-no-vac-line-set