The MRCOOL MDPHK-05 Universal DC Inverter Packaged Unit Heat Kit is an electric heating accessory designed for compatible MRCOOL Universal DC Inverter packaged HVAC units. It provides supplemental heat by converting electrical energy into heat through integrated heating elements, helping maintain comfortable indoor temperatures during colder conditions. This heat kit supports reliable... https://www.partshnc.com/mrcool-dc-inverter-packaged-unit-heat-kit-mdphk-05