The MRCOOL MHK20PB VersaPro Packaged Unit Heat Kit is an electric heating accessory designed for compatible MRCOOL VersaPro packaged HVAC units. It supplies supplemental heat by converting electrical energy into warm air, helping maintain indoor comfort during colder conditions. Installed within the packaged unit, the heat kit works with the system’s controls and blower to distribute ... https://www.partshnc.com/mrcool-versapro-packaged-unit-heat-kit-mhk20pb