MRCOOL MHK05PB VersaPro Electric Heat Kit 5kW is an electric heating accessory designed to provide supplemental or emergency heat for compatible VersaPro air handler systems. It works by using durable electric heating elements to convert electrical energy into warm airflow, delivering consistent heating when the heat pump requires additional support. https://www.partshnc.com/mrcool-electric-heat-kit-mhk05pb