The MRCOOL MHK10H Signature Series Air Handler Heat Kit is an electric heating accessory designed to provide supplemental or primary heat for compatible MRCOOL Signature Series air handlers. It works by converting electrical energy into heat, which is distributed through the air handler and ductwork for consistent indoor comfort. Ideal for heat pump systems requiring additional heatin... https://www.partshnc.com/mrcool-signature-series-10kw-heat-kit-mhk10h