MRCOOL 20 KW Air Handler Heat Strip with Circuit Breaker - MHK20HMRCOOL 20 KW Air Handler Heat Strip with Circuit Breaker MHK20H The 20 KW heat kit for MRCOOL Signature series MAHM 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. MHK20H is compatible with MRCOOL MAHM048CTA, MAHM060CTA, MAHM048ETA and MAHM060ETA. FEATURES: Provides emergency heat for your MRCOOL air handler MHK20H can provide 65001 70000 BTU of heat