The MRCOOL MHK15H Signature Series Air Handler Heat Kit with Breaker is an electric heating accessory designed to provide supplemental heat for compatible HVAC systems. It converts electrical energy into heat, while the air handler circulates warmed air throughout the conditioned space. This heat kit is intended for compatible MRCOOL Signature Series air handlers and related heating a... https://www.partshnc.com/mrcool-signature-heat-kit-mhk15h