The MRCOOL MHK05P Signature Series 5 kW Packaged Unit Heat Kit is a supplemental electric heating accessory designed to provide additional heat for compatible packaged HVAC units. It works by converting electrical energy into heat through resistance elements, with the packaged unit blower distributing the generated warmth throughout the conditioned space. Designed for use with compati... https://www.partshnc.com/mrcoolr-signature-series-heat-kit-mhk05p