The MRCOOL MHK08U Universal Air Handler Heat Strip is an 8 kW electric heating element designed to provide supplemental heat for compatible air handler systems. When energized, the heat strip converts electrical energy into heat, which is distributed through the ductwork by the air handler’s blower. It is used with MRCOOL Universal Series air handlers and compatible heat pump systems ... https://www.partshnc.com/mrcool-8kw-universal-heat-kit-mhk08u