Combined boilers for solid fuel and electricity

Solid fuel / electricity

— boilers combine a solid fuel firebox with electric heaters. This option provides an additional guarantee in case of problems with one of the energy sources — for example, in case of power outages, you can keep the heating system on coal for some time or constantly heat it with solid fuel, and when its supply is exhausted, switch to electricity, etc. For specific fuel types, see the relevant paragraphs.