MRCOOL MHK10H Signature Series Air Handler Heat Kit 10 kW with Circuit Breaker is an electric heating accessory designed to provide supplemental or emergency heat for compatible air handler systems. It works by using electric resistance heating elements to generate warm air, while the integrated circuit breaker provides electrical protection during operation. Designed for use with com... https://www.partshnc.com/mrcool-signature-series-10kw-heat-kit-mhk10h