MRCOOL MVPHK15 VersaPro & Hyper 2nd Gen Heat Kit 15 kW is an electric heating accessory designed to provide supplemental or emergency heat for compatible HVAC systems. It works by converting electrical energy into heat through integrated resistance heating elements, while the connected air handler distributes warm air throughout the ductwork. https://www.partshnc.com/mrcool-15kw-heat-kit-mvphk15