The MRCOOL MCAEHWD7X1AA Signature Series 7.5 kW Heat Kit is an electric auxiliary heating component designed for MRCOOL Signature Series R-454B stud-mount air handlers. It uses electric heating elements to generate supplemental heat and deliver warmer air through the HVAC system when additional heating capacity is needed. Providing 7.5 kW of heating output, it supports reliable comfor... https://www.partshnc.com/mrcoolr-signature-series-heat-kit-mcaehwd7x1aa