Watts: Electric heaters are often rated in watts. A simple rule of thumb is that you need about 10 watts to heat each square foot of space in a room with average insulation.
So, a 1,500-watt heater would work well for a 150 square-foot room. Smaller, personal heaters may be about half that wattage. If you simply want to stay warm in one area, say at your desk, a personal heater, such as those designed for a tabletop, may be best.
Radiant heaters emit infrared radiation that directly heats objects and people within their line of sight, and are a more efficient choice when you will be in a room for only a few hours and can stay within the line of sight of the heater.
Only the speed of heating will be more with 2000 watt. As far as the quanitity of hot water is same, you will need same heat content, for which same energy will be needed. For ex to provide 6000 Wh of heating, 1500 will take 4 hours and 2000 will take 3 hours.
Example (you can use an electric heater running cost calculator below for different wattages/kWh prices): If we assume the price of electricity is $0.1319 per kWh, a 1,500-watt electric space heater will cost; $0.20 to run per hour. $4.80 to run per 24 hours (day). $11.20 to run per week (8h/day).
Electricity usage: Panel heaters use about 2000 watts or 2Kw of electricity per hour, costing about 72 cents per hour, and are one of the most energy-efficient heating systems. A 2kW panel heater can heat a room to 22 square metres.
What type of heater puts out the most heat? The type of heater that puts out the most heat depends on various factors, but generally, infrared heaters (such as the radiant heaters in this article) are known for emitting a significant amount of heat.
Based on our comparisons, thermostatic tube heaters stand out as the most economical options. A tube heater is indeed the cheapest electric heater to run during winter, thanks to its low operational costs.
The heat-retention qualities of oil-filled radiators are the key factor in their cost-effectiveness. This ability to retain heat makes the radiators very energy-efficient, wasting as little electric energy as possible as it converts into heat energy, warming your room during those harsh winter days.
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.
Choosing the right electric heater for your room
In order to find the perfect heating solution, you should think about the type of heat transfer, heat distribution, heat-up times, temperature maintenance and air quality.
So, after looking at the different types of electric heaters available, due to its lower power-output, halogen heaters are the cheapest electric heaters to run.
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 ...
Take the measurements of your room in feet or metres. The multiply the Length of the room x the Width of the room x the Height of the room. The multiply this figure by a factor of 6 for BTU's or by 0.0606 for kW. The result is now the mimimum heat output required to heat this room.
ELECTRIC HEATER MARKET REPORT OVERVIEW
global electric heater market size was USD 8384 million in 2022 and market is projected to touch USD 12088.31 million by 2032 at CAGR 3.7% during the forecast period.
Electric radiators and infrared panels are among the most efficient forms of electric heating. Ceramic electric radiators deliver an even split of convection and radiation, and infrared panels use radiation as their sole method of heat transfer.
Modern models use ceramic elements, which get more resistant as they get hotter (they have a “positive thermal coefficient”). This means they produce heat more quickly and retain it better, making them cheaper to run than fan heaters used to be – as long as you use the thermostat wisely.
What is the safest heater to leave on overnight? While it's not recommended to leave any space heater on if you're not monitoring it, oil-filled, radiant space heaters are considered safer than ceramic convection (hot air) types, according to Roberson. Both of these options are safer than open-coil heaters.
Energy-Saving Features
Space heaters tend to use a lot of electricity and energy only to heat up a small portion of space. However, ceramic heaters tend to be the most energy-efficient option among different types of heaters.
Because an electric furnace needs to generate heat, it uses far more electricity than an air conditioning unit as it works to keep your home warm.
If you're using a Cadet heater for a little extra warmth in a room that's already heated by a some other form of heat, you can use less wattage. 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.
Oil filled radiators work in a very energy efficient manner, so can be considered cheap to run in comparison with many alternative designer radiator styles.