The MRCOOL MHK05H Signature Series 5 kW Heat Kit is an electric auxiliary heating accessory designed for compatible MRCOOL Signature Series air handlers. Operating at 208–230 volts, it uses an electric heat strip to generate supplemental warmth when additional heating is required, providing reliable comfort during colder conditions. The integrated circuit breaker adds convenient elect... https://www.partshnc.com/mrcool-signature-heat-kit-mhk05h