The MRCOOL MTWH04540E is a 40-gallon electric tank water heater with a 4.5 kW heating element, designed to provide dependable hot water for residential applications. It works by using electric heating elements to warm water stored inside the insulated tank, maintaining the desired temperature for on-demand household use. Unlike HVAC equipment, this unit is a dedicated water-heating ap... https://www.partshnc.com/mrcool-electric-tank-water-heater-mtwh04540e