The MRCOOL DIY-18-HP-WMAH-230D25-O Heat Pump Air Handler is an indoor HVAC unit designed to deliver efficient airflow and dependable year-round comfort in residential applications. It works by circulating heated or cooled air produced by a compatible MRCOOL DIY heat pump condenser through the home's ductwork, maintaining consistent indoor temperatures. Specifically engineered for use ... https://www.partshnc.com/mrcool-diy-5th-gen-wall-mount-air-handler-diy-18-hp-wmah-230d25-o