The MRCOOL MHK10PB VersaPro 10kW Electric Heat Kit is an auxiliary electric heating accessory designed for compatible MRCOOL VersaPro packaged heat pump systems. It uses electric resistance heating elements to generate additional heat when the heat pump requires supplemental heating, helping maintain comfortable indoor temperatures during colder conditions. https://www.partshnc.com/mrcool-mhk10pb-electric-heat-kit