A portable electric heater typically consumes between 500 to 1,500 watts (0.5 to 1.5 kilowatts) of electricity per hour, depending on its size and settings. The consumption is directly related to the heater's power rating, which is usually indicated on the device. For example, a heater rated at 1,500 watts will use 1.5 kilowatt-hours (kWh) of electricity if operated for one hour.
To calculate the cost of running a portable electric heater, you need to know the electricity rate charged by your utility company, usually expressed in cents per kWh. Multiply the heater's power consumption (in kWh) by the electricity rate to determine the cost per hour. For instance, if the rate is 12 cents per kWh, running a 1,500-watt heater for one hour will cost 18 cents.
The actual energy consumption can vary based on usage patterns. If the heater has a thermostat, it may cycle on and off to maintain a set temperature, reducing overall consumption. Additionally, factors such as room insulation, ambient temperature, and heater efficiency can influence energy use.
To optimize energy efficiency, consider using the heater in well-insulated spaces, keeping doors and windows closed, and using it only when necessary. Some heaters come with energy-saving features like timers and adjustable thermostats, which can help reduce consumption.
In summary, a portable electric heater's electricity consumption is primarily determined by its wattage and usage duration. Understanding these factors and your local electricity rates can help you estimate operating costs and manage energy use effectively.