Electric heating and power consumption - how expensive is heating with electricity actually?


The fact that heating with electricity is expensive and uneconomical is almost a truism. Still, that's not always true - sometimes the opposite is true. What electricity heaters actually consume, and how you can calculate it, read here.

Power consumption is usually very accurately calculated

The so-called power consumption of electrical equipment is usually always very easy to determine - it must always be specified for each device, and thus also for an electric heater. Caution is only necessary here, since power consumption and power output are not always the same.

Power consumption in watts can often be higher than the power or rated power of a device. Unit of measure for the electric power is here always the physical size watts.

The consumption calculation is then quite simple: When a device with 1,000 watts (1 kW) power consumption runs for one hour, it generates a consumption of 1 kWh. From this it can also be seen very quickly that heating ovens and radiators can often actually be true cost traps.

Other heating technologies

Night storage heaters convert low-cost night-time heat into heat, which is then stored to be delivered in a controlled manner throughout the day. They are practically the most inefficient heating form ever, and have already been legally banned in many areas for environmental reasons.

Another possibility of electric heating is heating with infrared: Here, the electricity is converted into "real" heat radiation, which primarily directly heats solids in the room and the human body, without taking the detour via the elaborate heating of the entire room air.

For this reason, infrared heaters are very economical and actually - even if that can not be calculated so accurately - also very efficient. You can also run at controlled intervals, which further reduces power consumption even further.

To calculate the power consumption, the power consumption of the individual heating elements in watts is multiplied here, multiplied by the hours they are in operation. Often, good placement and thoughtful use result in surprisingly low consumption, which is much less costly than other forms of heating - especially because rooms only have to be heated when they are actually used.

Risk of electricity price

However, the energy transition, new taxes and political strategies always make the electricity price a risk factor. In recent years, it has increased significantly, further increases are by 2020 very likely.

Of course, this involves a certain cost risk when heating with electricity: unless you have a smart photovoltaic system and generates its own electricity.

Tips & Tricks

The power consumption of electric heaters depends on the one hand on the efficiency of the devices, on the other hand also very much on the technology used. Armed with a calculator and a pen, you can practically avoid getting shocking electricity bills in advance if you plan well and rely on the right technology.


Video Board: How Much Electric Heater Consume Electricity?