The MRCOOL MHK20H Signature Series Air Handler Heat Kit is a 20kW electric heating accessory designed to provide supplemental or primary heat for compatible MRCOOL air handlers. It works by using electric resistance heating elements to warm air as it passes through the air handler, delivering consistent conditioned airflow throughout the space. Equipped with a circuit breaker, the kit... https://www.partshnc.com/mrcool-mhk20h