MRCOOL 15 KW Packaged Unit Heat Strip with Circuit Breaker - MHK15PMRCOOL 15 KW Packaged Unit Heat Strip with Circuit Breaker MHK15P The 15 KW heat kit for MRCOOL Signature series Package Units is a reliable source of backup heat for your home. A heat kit is designed to provide emergency electric heat so you are never left out in the cold. MHK015P is compatible with MRCOOL MPC421M414A, MPC481M414A, MPC601M414A, MPH421M414A, MPH481M414A and MPH601M414A. FEATURES: Provides emergency heat for your MRCOOL package unit