Autonomous electric heating
To accurately determine the required power of an electric boiler, many parameters and indicators are taken into account (wall thickness, insulation quality, type of radiators, etc.). An approximate calculation is taken based on the ratio of 10 sq.m. heated room - 1 kW. If your home electrical network allows, it is better to install a boiler with a small power reserve (in any case, the electric boiler will consume exactly as much electricity as is necessary to maintain the set temperature).
In order to avoid problems during the operation of the electric boiler, as well as for safety reasons, installation and connection must be carried out exclusively by a specialist who has the appropriate permission to perform such work.