The MRCOOL DIY-12-HP-C-115D25-O DIY 5th Gen 12K BTU Single-Zone Mini-Split Ductless Heat Pump Condenser is an outdoor HVAC unit designed for efficient heating and cooling in single-zone ductless systems. It works by transferring heat between indoor and outdoor air through advanced heat pump technology, providing reliable year-round comfort. Used with compatible MRCOOL DIY indoor air h... https://www.partshnc.com/diy-5th-gen-single-zone-mini-split-diy-12-hp-c-115d25-o