The MRCOOL MVPHK20 VersaPro 2nd Gen 20kW Heat Kit is an electric auxiliary heating component designed for compatible MRCOOL VersaPro 2nd Generation air handlers using R454B refrigerant systems. It generates supplemental heat by converting electrical energy into warm airflow, ensuring reliable indoor comfort during colder conditions or when the heat pump requires additional heating sup... https://www.partshnc.com/mrcool-20kw-heat-kit-mvphk20