The MRCOOL MHK15H Signature Series Air Handler Heat Kit with Breaker 15 kW is an electric heating accessory designed to provide supplemental or primary heat when installed inside compatible MRCOOL Signature Series air handlers. It works by converting electrical energy into heat, which is distributed throughout the home by the air handler’s blower for consistent indoor comfort. Commonl... https://www.partshnc.com/mrcool-signature-heat-kit-mhk15h