An electric furnace is one of several available solutions when it comes to efficient heating of residential premises. The growing popularity of this type of device should not surprise us. Their operation does not involve the combustion of gas or heating oil, thanks to which we can count on clean and safe air. However, which electric furnace should you choose if you have a house with an area of 100 m2? What power of an electric furnace will be appropriate? What additional factors are worth considering? You will find the answers to these and other questions by reading this article!
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How much electricity does an electric furnace use?
Before you even start choosing a stove 
electric, check how much electricity a given model from the series you are interested in consumes on average. You can calculate this if you know such parameters as the power of the furnace and the supply voltage. Standardly, the power of the furnace is presented in kilowatts (kW), while the supply voltage is given in volts (V).
The general formula to calculate the amount of electricity used is as follows:
Current (A) = Power (kW) / Voltage (V)
For example, if you have a 10 kW furnace that requires a 230 V power supply, the calculations should look like this:
Current = 10 kW / 230 V = 43.48 A
Of course, it must be borne in mind that the calculations presented above are simplified. In reality, the level of energy consumption will vary depending on factors such as the efficiency of the furnace, the degree of its wear (depreciation), the tightness of the room, etc.
What power of an electric furnace should I choose for a 100 m2 house?
It is difficult to give a clear answer to this question because, as we have already mentioned, a lot depends on individual circumstances. The appropriate furnace power is influenced by, for example, the insulation of the house, the location of the property and the area of the living quarters, and finally: the preferred temperature inside the building.
Generally, however, it is assumed that for a house with an area of 100 m2, a furnace with a power of approximately 10 to 15 kW should be sufficient.
Of course, if you want a more in-depth answer on this topic, consult a professional who will perform accurate calculations and analysis, taking into account the individual conditions of the building.
Which electric furnace for photovoltaics?
If you are the proud owner of a photovoltaic installation, it is worth considering buying an electric furnace that is compatible with photovoltaic panels. This solution will bring you two benefits, i.e. heating efficiency (a modern furnace will take care of this) and financial savings (you will use the energy produced by the photovoltaic panels for heating).
Which stove should I choose?
If you are wondering which electric furnace to choose, you have come to the right place because we have several suggestions for you.
Electric double boiler Kospel EKD.M3-04/06/08
Electric double boiler Kospel EKD.M3-04/06/08 
is a device for which the maximum temperature setting is 85 degrees Celsius. As for the water capacity, it is 12 liters for the expansion tank and 130 liters in the heating water circuit.
The running water connection is 3/4 inch, which is a standard solution in this category. Thanks to this, there should be no major problem with connecting the device to the running water system. The EKD.M3-04/06/08 electric boiler also offers such functionalities as automatic air venting.
Elterm Major 9 kW electric boiler - basic LED series
This boiler will work well as a primary or backup heat source. The Elterm Major 9 kW electric boiler is equipped with functions such as an electronic pump or a transparent LED panel. In terms of power, this equipment is available in the following variants: 4, 6, 9, 12, 15, 18 and 24 kW.
In each of these cases, it is possible to limit the power operating range to 33% or 67%. The PV ready functionality is worth noting here, thanks to which it is possible to use the energy generated by the operation of the photovoltaic installation.
Electric central heating boiler EKCO.M3-12/16/20/24 kW / 400V 3N~
It is worth paying attention to this model due to its high power level (24 kW), the possibility of remote boiler regulation. The sound generated by this device is in the range of 41 decibels, which is an optimal level.
The EKCO.M3-12/16/20/24 kW / 400V 3N~ electric central heating boiler is a device that can be described in one word: solid. It will work well in standard conditions, as well as in medium-sized rooms.