A 750-watt electric heater uses 750 watts of power per hour regardless of whether it is a radiant, ceramic, oil-filled, bare metal coil, or other type of space heater. A 1,500-watt heater will use twice the energy of a 750-watt heater and cost twice as much to operate, but it will also heat your space more effectively.
750 watts works well for a small office, small bedroom, or bathroom. 1000 watts should warm up large bathrooms, small living rooms, or a small room. 1500 watts will heat spaces up to about 150 square feet and can help you stay warm and toasty in a medium-sized room, office, kitchen, or modest-sized living room.
In other words, a 1,500-watt heater will be great for a 250-square-foot room with central heat. If that same room had no other source of heat, you'd need a 2,000-watt heater.
Large space heaters take immense amounts of energy to run. However, those are most likely used only in commercial and industrial settings. The average residential space heater has two main heat settings, low and high. The low setting needs 750 watts to run, whereas the high setting takes 1,500 watts.
Small personal heaters often use 750 watts, medium-sized room heaters use around 1000-1200 watts, and larger models use 1500-1800 watts. Many modern heaters also have adjustable power settings, allowing you to switch between low and high wattage for better energy management.
How much electricity does 750 watts use? A 750W appliance used for one hour will consume around 0.75kWh of electricity per hour.
Answer. To calculate the cost of running a 1500-watt heater for 24 hours in the US, you need to know the electricity cost per kilowatt-hour (kWh). If the average cost is about 16 cents per kWh (as of early 2023), the heater uses 1.5 kW x 24 hours = 36 kWh. Therefore, the cost would be 36 kWh x 16 cents = 5,76.
Some space heaters use as little as 400 watts, while others use up to 1,500 watts. A 750-watt electric heater uses 750 watts of power per hour regardless of whether it is a radiant, ceramic, oil-filled, bare metal coil, or other type of space heater.
Room Size and Heater Wattage
Here's a quick guide: Small rooms (up to 10m²): 1000-1500W. Medium rooms (10-20m²): 1500-2000W. Large rooms (20-30m²): 2000W and above.
Government regulations limit space heater output to 1,500 watts, which is not nearly enough to heat an entire home. In general, one square foot of space requires about 10 watts of electricity to heat, which means that a space heater operating at its maximum output can heat a room no larger than 150 square feet.
The first technique is to simply figure the square footage of the space you want to heat. In warmer climates, multiply this number by 10 - 15. In more moderate climates, multiply by 20 - 30. And in cold climates multiply the square foot number by 30 - 40.
Additionally, the more watts a device has, the more heat it is likely to generate.
As a rule of thumb it will require about 10 watts for every square foot. So the 1500 watt will usually heat up to 150 square feet. Heating question - trying to understand what size heater to ... I am trying to understand in layman terms what this actually ...
On average, space heaters use 1,500 watts of electricity.
Using a space heater 8 hours per day will use about 84 kilowatt-hours of electricity per week. It costs an average of $51.65 to run a space heater for a month and $258.26 to run for a year.
But in general, since central heating powered by natural gas is cheaper than heat from electricity, heating a large space will cost less with an HVAC system that runs on gas.
Infrared heaters are the most efficient type of heater available. They use very little electricity to generate heat, and they provide a lot of heat for their size. Infrared heaters are also very safe to use, as they do not emit any harmful radiation. Oil-filled heaters are another type of heater that is very efficient.
if used at 100% of output power and 100% efficient it will cost about 11 cents per hour to run at normal electric rates.
Halogen heaters are among the most cost-effective electric heater options, with a typical power output of 1200W. Their immediate warmth in close proximity saves energy by not needing to be left running for long stretches of time.
As a rule, electronics, and appliances that are rated for 1,000 watts or higher likely need a dedicated circuit, especially if the item will be operating for long stretches of time.
It might be cheaper to heat one room with an electric heater. But it depends on the size of the room and how long you need to heat it for.
If you use a space heater in your home, please be aware that using a space heater can cause a significant increase in your monthly bill. A 1,000-watt space heater operating 12 hours a day will add about $40 to your monthly bill. If the cost does not deter you, remember how important it is to use space heaters safely.