The MRCOOL A-12-HP-C-115D-O Advantage 5th Gen 12K BTU Mini Split Condenser is a single-zone outdoor heat-pump condenser designed for ductless mini-split HVAC systems. It works with a compatible 12,000 BTU Advantage indoor air handler to transfer heat through the refrigeration cycle, providing both heating and cooling. https://www.partshnc.com/mrcool-advantage-5th-gen-a-12-hp-c-115d-o-mini-split-12k-btu