Divide watts by 1,000 to get kilowatts per hour. If your electric company charges you 10 cents per kilowatt hour and you run a 1,500-watt space heater for 10 hours, that will cost $1.50.

Electric heaters are convenient and easy ... There are two power settings—7,500 and 10,000 watts—and it’s capable of heating spaces up to 1,000 square feet. The garage heater also has ...

Electric space heaters for home use are usually rated ... to get the power consumed (in watts), then use the formula. A 1,000-watt vacuum cleaner used one hour per week consumes one kWh of energy.