In-Wall, Fan-Driven Hydronic HeaterKing’s in-wall, fan-driven, zone-controlled hydronic heater heats only the rooms that need it using energy from the home’s hot water heater. The hot water is passed through highly efficient radiant heat plates and returned to the tank. Inside the heater, a fan draws room-temperature air across the radiant plates where the air is warmed before being pushed back out into the room.

King Electrical Manufacturing Co.