A 2,000-watt heater is a common starting point for a 200-square-foot room under average conditions. Adjust the required output for insulation, windows, ceiling height, climate, and other heat sources.
For a complete guide on sizing baseboard heaters, see our Baseboard Heater 120V & 240V Sizing Guide.
A single baseboard heater may heat a 200-square-foot room if its output matches the room's heat demand. Some spaces may benefit from multiple heaters to provide the required wattage and distribute heat more evenly.
Before installing more than one heater, consider the circuit, wiring, thermostat, and combined electrical load. Exceeding capacity or system requirements can risk damage and injury.